Difference between revisions of "LifeWiki:News archive"

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The following is a list of past news items that ran on the [[Main Page]]:
The following is a list of past news items that ran on the [[Main Page]].
 
==Current news==
The [[Template:CurrentNews|following news items]] are currently live on the [[Main Page]]:
{{CurrentNews|nolinks=true}}
==2024==
* '''March 12''': [[400spartans]] [https://conwaylife.com/forums/viewtopic.php?p=180119#p180119 discovers] a population-236 solution to the [[unique father problem]] with a self-forcing patch containing 389 specified (both on and off) cells and fitting in a {{times|22|20}} bounding box, each of these statistics being the smallest known.
* '''March 12''': [[David Bell]] [https://conwaylife.com/forums/viewtopic.php?p=180102#p180102 completes] the first [[c/4 diagonal]] backward-to-sideways glider reflector using reactions by [[Keith Amling]] and [[Matthias Merzenich]]. Using one of Bell's glider-releasing reactions and a beehive-to-ship converter by Amling, Merzenich [https://conwaylife.com/forums/viewtopic.php?p=180103#p180103 constructs] the first c/4 diagonal p28 rake and demonstrates the existence of rakes at periods 32, 36, and 40.
* '''March 9''': [[James Pascua]] [https://conwaylife.com/forums/viewtopic.php?p=179932#p179932 shows] that a previously known "double beehive push catalyst" found by Tanner Jacobi in December 2020 can serve as a [[2c/3 wire]] input conduit for either a single wire or two perpendicular wires, with a repeat time of only 100 ticks; [[Entity Valkyrie]] [https://conwaylife.com/forums/viewtopic.php?p=179942#p179942 finds a way] to activate the catalyst with a single passing [[Herschel]] with repeat time 176, and [[EvinZL]] [https://conwaylife.com/forums/viewtopic.php?p=179988#p179988 points out] a reset mechanism with a repeat time as low as 56 ticks (eventually reduced to [https://conwaylife.com/forums/viewtopic.php?p=180709#p180709 42 ticks]).
* '''March 1''': [[Period1GliderGun]] [https://conwaylife.com/forums/viewtopic.php?p=179391#p179391 discovers] the first [[true]] [[period-15 glider gun]] using a [[B-heptomino_hasslers#p15|B-heptomino hassler]] by [[Carson Cheng]] hours after finding the first p16 gun. Period-15 is now the smallest period for which a true-period gun is known.
* '''February 29''': [[Period1GliderGun]] [https://conwaylife.com/forums/viewtopic.php?p=179363#p179363 discovers] the first [[true]] [[period-16 glider gun]] using [[Charity's p16]] and a [[B-heptomino_hasslers#p16|B-heptomino hassler]] by [[Nico Brown]]. Period-16 is now the smallest period for which a true-period gun is known.
* '''February 26''': [[Keith Amling]] [https://conwaylife.com/forums/viewtopic.php?p=179093#p179093 discovers] a period-6 c/2 [[greystretcher]] in which the stripes are bounded by [[coiled snake]]s.
* '''February 24''': [[Period1GliderGun]] [https://conwaylife.com/forums/viewtopic.php?p=178897#p178897 completes] a non-period-doubling stabilization of iNoMed's p19 partial, which also allows for a stabilization of the wick. The result is [[goban]], the second known period-19 oscillator. [[EvinZL]] notes that there are two variants with slightly different connection points.
* '''February 23''': [[Period1GliderGun]] [https://conwaylife.com/forums/viewtopic.php?p=178793#p178793 discovers] that a period-19 partial result by [[iNoMed]] can be completed with a period-doubling catalyst, giving a period-38 oscillator. [[May13]] [https://conwaylife.com/forums/viewtopic.php?p=178803#p178803 notices] that the p19 component can be extended to form a wick.
* '''February 23''': [[Keith Amling]] [https://conwaylife.com/forums/viewtopic.php?p=178796#p178796 discovers] two different [[c/2 orthogonal]] [[wickstretcher|stretchers]] for a pair of [[coiled snake]]s.
* '''February 18''': [[Period1GliderGun]] [https://conwaylife.com/forums/viewtopic.php?p=178449#p178449 notices] that a previously unrecognized pattern by [[Mitchell Riley]] from September 7, 2022 is actually a complete period-171 oscillator and is in fact the smallest known p171 oscillator.
* '''January 29-February 2''': [[Keith Amling]], with some help from [[Matthias Merzenich]], discovers new [[c/4 diagonal]] spaceships ([https://conwaylife.com/forums/viewtopic.php?p=176777#p176777], [https://conwaylife.com/forums/viewtopic.php?p=176789#p176789], [https://conwaylife.com/forums/viewtopic.php?p=177108#p177108]) capable of eating a variety of objects including ships, blocks, boats, beacons, beehives, barges, loaves, tubs, toads, and mangoes. 
* '''January 26-28''': [[Goldtiger997]] [https://conwaylife.com/forums/viewtopic.php?p=176602#p176602 completes] a 259-[[glider synthesis]] of [[77P6H1V1]], making it the first [[c/6 diagonal]] spaceship to be synthesized.
* '''January 22''': [[iNoMed]] [https://conwaylife.com/forums/viewtopic.php?p=176315#p176315 discovers] the first [[true-period|true]] [[period-53 glider gun]] based on a partial result by [[goldenratio]].
* '''January 20''': [[Adam P. Goucher]] [https://cp4space.hatsya.com/2024/01/20/every-finite-phoenix-has-period-2/ proves] that every finite [[phoenix]] has period 2.
* '''January 14-15''': [[Keith Amling]] discovers [[c/4 diagonal]] eaters for [https://conwaylife.com/forums/viewtopic.php?p=175711#p175711 blocks] and [https://conwaylife.com/forums/viewtopic.php?p=175747#p175747 blinkers] and uses the block eater to [https://conwaylife.com/forums/viewtopic.php?p=175765#p175765 construct] the first period-40 c/4 diagonal ship. [[David Bell]] and [[May13]] use these to reduce the [https://conwaylife.com/forums/viewtopic.php?p=175776#p175776 p72], [https://conwaylife.com/forums/viewtopic.php?p=175738#p175738 p80], and [https://conwaylife.com/forums/viewtopic.php?p=175767#p175767 p116] [[rake]]s. [[Matthias Merzenich]] [https://conwaylife.com/forums/viewtopic.php?p=175754#p175754 notices] that an incidental reaction in the blinker eater allows a known ship to eat a glider stream and can also be used to complete the first c/4 diagonal ships of periods 28, 32, and 36.
* '''January 10-13''': [[Adam P. Goucher]] [https://conwaylife.com/forums/viewtopic.php?p=175654#p175654 proves] that no finite [[phoenix]] oscillators exist at periods 3 through 69.
* '''January 9-12''': [[Keith Amling]] [https://conwaylife.com/forums/viewtopic.php?p=175284#p175284 discovers] and [[Matthias Merzenich]] [https://conwaylife.com/forums/viewtopic.php?p=175495#p175495 reduces] the first period-9 [[c/3 orthogonal|c/3]] [[backrake]], the lowest possible period for a c/3 rake. [[May13]], [[Evin]], Merzenich, and Amling use this to construct the first c/3 rakes of periods [https://conwaylife.com/forums/viewtopic.php?p=175304#p175304 18], [https://conwaylife.com/forums/viewtopic.php?p=175309#p175309 63], [https://conwaylife.com/forums/viewtopic.php?p=175312#p175312 99], [https://conwaylife.com/forums/viewtopic.php?p=175358#p175358 117], and [https://conwaylife.com/forums/viewtopic.php?p=175312#p175312 126].
* '''January 9''': [[Keith Amling]] [https://conwaylife.com/forums/viewtopic.php?p=175245#p175245 reduces] the known upper bound on the average [[agar]] [[density]] from 320/559 ≈ 0.572 to 1176/2087 ≈ 0.563. The highest average density is conjectured to be 1/2.
* '''January 5''': [[May13]] [https://conwaylife.com/forums/viewtopic.php?f=11&t=1074&p=174903#p174903 discovers] (using [[qfind]]) the first period-9 4c/9 orthogonal spaceship in a [[Life-like cellular automaton]] (B3567/S14578), fitting within a {{times|19|676}} bounding box in one phase.
* '''January 1''': [[Layz Boi]] [https://conwaylife.com/forums/viewtopic.php?f=11&t=1074&p=174682#p174682 discovers] (using [[WLS]]) two new p2 lightspeed [[spaceship]]s in [[Life-like cellular automaton|Life-like rules]] containing both B2 and B3 but not B0 or B1, increasing the number of such rules in which spaceships are known to 10 (of the 8192 without S0 that have not been disproved).
 
==2023==
* '''December 26''': [[Goldtiger997]] uses [[QuFince]] to find a 15-glider synthesis for the last remaining 17-bit still life that had cost 16 gliders -- completing the [https://conwaylife.com/forums/viewtopic.php?p=174201#p174201 "17-in-15" project].
* '''December 21-29''': [[May13]] [https://conwaylife.com/forums/viewtopic.php?p=173858#p173858 finds] a c/4 p80 puffer, which several days later is [https://conwaylife.com/forums/viewtopic.php?p=174473#p174473 cleaned up] by [[David Bell]] (and independently by May13) to produce complete c/4 p80 [[rake]]s.
* '''December 20''': [[Luke Kiernan]] uses [[Barrister]] to [https://conwaylife.com/forums/viewtopic.php?f=2&t=1849&p=173771#p173771 complete] a [[boojum reflector]] variant with a different output glider -- which also implies a new G-to-R based on the [[Herschel receiver]] and a stable 4hd [[lane]] [[shifter]] based on the [[glider stopper]].
* '''December 19-21''': [[Keith Amling]] [https://conwaylife.com/forums/viewtopic.php?p=173671#p173671 discovers] a period-8 [[c/4 diagonal]] [[rake]]. Other users find various applications for this, including [https://conwaylife.com/forums/viewtopic.php?p=173853#p173853 a p72 rake] by [[praosylen]] with a [https://conwaylife.com/forums/viewtopic.php?p=173858#p173858 reduction] by [[May13]] and [https://conwaylife.com/forums/viewtopic.php?p=173906#p173906 filtered] to p144 by [[David Bell]].
* '''December 17''': [[Carson Cheng]] [https://conwaylife.com/forums/viewtopic.php?p=173506#p173506 discovers] [[Snark64]], a new color-preserving 90-degree [[glider]] [[reflector]] with repeat time 64 -- useful for synchronization problems, since it has a different output [[parity]] from the [[Snark]].
* '''December 16-26''': [[400spartans]] [https://conwaylife.com/forums/viewtopic.php?p=173480#p173480 reduces] the known upper bound on the average [[agar]] [[density]] from 8/13 ≈ 0.615 to 17/28 ≈ 0.607. [[NooneAtAll3 ]] [https://conwaylife.com/forums/viewtopic.php?p=174190#p174190 reduces] this further to 320/559 ≈ 0.572.
* '''December 12''': [[Luke Kiernan]] [https://conwaylife.com/forums/viewtopic.php?p=173166#p173166 finds] a compact [[glider]] to [[wing]] to [[LWSS]] converter.
* '''December 10''': [[Keith Amling]] proves ([https://conwaylife.com/forums/viewtopic.php?p=172934#p172934], [https://conwaylife.com/forums/viewtopic.php?p=172938#p172938]) that there are no [[phoenix]] oscillators of periods 7, 9, or 11.
* '''December 10''': [[Alex Greason]] [https://conwaylife.com/forums/viewtopic.php?p=172853#p172853 discovers] a 5-glider [[synthesis]] for [[amphisbaena]], proving that all [[:Category:Strict_still_lifes_with_11_cells|11-cell still lifes]] can be synthesized with 5 or fewer gliders.
* '''December 8''': [[Keith Amling]] [https://conwaylife.com/forums/viewtopic.php?p=172734#p172734 discovers] a new type of [[c/5 diagonal]] [[wickstretcher]] for a period-2 wick.
* '''December 2''': [[FWKnightship]] [https://conwaylife.com/forums/viewtopic.php?p=172367#p172367 constructs] a (6,3)c/1024 [[knightship caterpillar]] with an almost completely new support mechanism, re-using only the [[over-unity]] glider production mechanism from the [[half-baked knightship]].
* '''November 29''': [[Charity Engine]] [https://conwaylife.com/forums/viewtopic.php?p=172182#p172182 discovers] a new longest-lasting known [[natural]] [[diehard]], a {{times|16|16}} [[soup]] lasting 1,413 generations before completely dying out, via [[apgsearch]].
* '''November 22''': [[Keith Amling]] [https://conwaylife.com/forums/viewtopic.php?p=171705#p171705 proves] that [[37P4H1V0]] is the unique smallest possible period-4 [[c/4 orthogonal]] spaceship in terms of its minimum population of 37 cells.
* '''November 18-December 2''': David Bell [https://conwaylife.com/forums/viewtopic.php?p=171415#p171415 extends] earlier work on [https://conwaylife.com/forums/viewtopic.php?p=170856#p170856 period-116 c/4 spaceships] and [https://conwaylife.com/forums/viewtopic.php?p=171051#p171051 c/4 rakes] by EvinZL and May13, respectively.
* '''November 16''': Several people extend a new [[beehive]] [[factory]] partial by [[Mitchell Riley]] to produce [[conduit]]s, usually with [[repeat time]] 90, that convert gliders to [[G-to-X_(November_2023)|other active objects]].
* '''November 15''': [[Keith Amling]] [https://conwaylife.com/forums/viewtopic.php?p=171254#p171254 proves] that [[30P5H2V0]] is the unique smallest possible period-5 [[2c/5 orthogonal]] spaceship in terms of its minimum population of 30 cells.
* '''November 14''': [[Mitchell Riley]] [https://conwaylife.com/forums/viewtopic.php?p=171092#p171092 discovers] [[44P49]], the smallest known period-49 oscillator, which quickly leads to a number of related [[SKOP]] records being broken.
* '''November 12-13''': [[Keith Amling]] completes a census of all [https://conwaylife.com/forums/viewtopic.php?p=171012#p171012 period-3 ships up to 49 cells] and all [https://conwaylife.com/forums/viewtopic.php?p=171031#p171031 period-2 ships up to 80 cells] which discovers 6 new c/3 ships and proves that [[64P2H1V0]] is the smallest possible period-2 ship.
* '''November 8-10''': [[Keith Amling]] [https://conwaylife.com/forums/viewtopic.php?p=170685#p170685 discovers] a high-clearance variant of a known p28 [[c/4 diagonal]] puffer and combines two such engines to form a p116 puffer. Two days later, [[praosylen]] [https://conwaylife.com/forums/viewtopic.php?p=170835#p170835 modifies] the p116 puffer to form a [[dirty rake]] and [[Evin]] uses this dirty rake to [https://conwaylife.com/forums/viewtopic.php?p=170856#p170856 construct] a clean p116 rake. The previous lowest known c/4 diagonal rake period was 4508.
* '''November 2''': affamatodidio [https://conwaylife.com/forums/viewtopic.php?p=170361#p170361 finds] and EvinZL reduces a [[Spartan]] 180-degree same-lane [[glider]] [[reflector]] with the same timing as [[Jubjub]].
* '''October 22''': iNoMed [https://conwaylife.com/forums/viewtopic.php?f=2&t=1437&start=4175#p169611 finds] a new [[period-201 glider gun]] engine, the first engine of that period to be found and the smallest gun of that period by bounding box.
* '''October 20''': Nico Brown [https://conwaylife.com/forums/viewtopic.php?f=2&t=1437&start=4175#p169492 finds] a new p41 engine, the [[p41 pi-heptomino hassler]].
* '''October 12''': iNoMed combines an engine by Luke Kiernan and a sparker by Carson Cheng to [https://conwaylife.com/forums/viewtopic.php?f=2&t=1437&start=4175#p169035 create] the first p81 engine, a p81 [[Pi-heptomino hasslers#p81|pi-heptomino hassler]].
* '''October 9''': [[Luke Kiernan]] [https://conwaylife.com/forums/viewtopic.php?p=168887#p168877 finds] a toggle-safe [[glider to block]] [[converter]].
* '''October 5''': [[Tim Coe]] adds [https://conwaylife.com/forums/viewtopic.php?p=168544#p168544 two more levels of tetration] to the lifespan of a 112×89 "diesuperhard", pushing the lower bound up beyond 13^^^3; the bounds are then moved beyond 17^^^3 on the same day due to improvements by [[Adam P. Goucher]] and [[Evin]], with a similar sized bounding box (116×86).
* '''October 5''': Based on a partial result by [[Mitchell Riley]], [[iNoMed]] [https://discord.com/channels/357922255553953794/370571014654001154/1159398574103199794 completes] a p42 glider gun fitting in a 32×23 bounding box, making it currently the seventh smallest [[true-period]] glider gun.
* '''October 4'''<!--inferred from time of DoI entry update-->: [[Randall D. Beer]] [https://www.complex-systems.com/abstracts/v32_i01_a01/ proves] that no {{times|7|7}} [[Garden of Eden]] exists, and provides constraints on the population of {{times|8|8}} and {{times|9|9}} ones (which are not known to exist).
* '''September 15-28''': Collaborative progress on enormously long-lived [[diehard]]s continues on the [https://conwaylife.com/forums/viewtopic.php?p=167981#p167981 "engineered diehards" thread], passing the threshold on September 28 of 11^^^3 = 11 ^^ (11 ^^ 11) ticks (where ^^ is the operator for tetration, i.e., iterated exponentiation).
* '''September 24''': [[Carson Cheng]] [https://conwaylife.com/forums/viewtopic.php?p=167691#p167691 discovers] a period-76 shuttle for a pair of pi-heptominoes which, at 52 cells, is the smallest known oscillator of this period.
* '''September 23''': [[Evin]] discovers compact, stable glider [[pulse divider]]s with new period multipliers of [https://conwaylife.com/forums/viewtopic.php?p=167612#p167612 5], [https://conwaylife.com/forums/viewtopic.php?p=167615#p167615 11], [https://conwaylife.com/forums/viewtopic.php?p=167642#p167642 12], and [https://conwaylife.com/forums/viewtopic.php?p=167615#p167615 4+6n]
* '''September 18''': [[Mitchell Riley]] discovers [[86P107]], the first engine-based period-107 oscillator, and the smallest known oscillator of that period.
* '''September 9''': [[Hartmut Holzwart]] [https://conwaylife.com/forums/viewtopic.php?p=166691#p166691 constructs] a new type of [[c/2 orthogonal]] [[agar ship]].
* '''September 6''': [[Keith Amling]] [https://conwaylife.com/forums/viewtopic.php?p=166490#p166490 completes] a period-6 [[c/3 orthogonal]] ship containing a simple [[wick]].
* '''September 4''': [[400spartans]] [https://conwaylife.com/wiki/Unique_father_problem#Reduction constructs] a 278-cell unconstructible still life, smaller in population and bounding box than the previous minimum 306-cell version.
* '''September 1''': The 2022 [[Pattern of the Year]] competition [https://conwaylife.com/forums/viewtopic.php?p=166268#p166268 concludes] with a tie for first place between the explicit 15-glider [[reverse caber-tosser]] and the unsynthesizable and limited-ancestor objects.
* '''August 31''': [[Keith Amling]] [https://conwaylife.com/forums/viewtopic.php?p=166120#p166120 constructs] the first c/3 [[Greyship#Types_of_greyships|against-the-grain greyship]] based on an idea by [[Hartmut Holzwart]].
* '''August 28''': [[Carson Cheng]], [[Mitchell Riley]], and [[iNoMed]] [https://conwaylife.com/forums/viewtopic.php?p=165969#p165969 collaborate] to find the smallest known p140 oscillator.
* '''August 27''': [[Mitchell Riley]], [[iNoMed]], and [[Matthias Merzenich]] [https://conwaylife.com/forums/viewtopic.php?p=165849#p165849 collaborate] to find the smallest known p126 oscillator. [[Nico Brown]] and [[iNoMed]] then use this oscillator to [https://conwaylife.com/forums/viewtopic.php?p=165853#p165853 construct] a new record smallest p126 gun.
* '''August 26''': [[Keith Amling]] [https://conwaylife.com/forums/viewtopic.php?p=165834#p165834 discovers] the first [[2c/5 orthogonal]] [[greystretcher]].
* '''August 11''': [[Keith Amling]] [https://conwaylife.com/forums/viewtopic.php?p=164881#p164881 discovers] the first [[c/3 orthogonal]] [[wickstretcher]]s and [[greystretcher]]s.
* '''August 9''': [[Keith Amling]] [https://conwaylife.com/forums/viewtopic.php?p=164825#p164825 discovers] a new type of c/4 orthogonal [[greystretcher]].
* '''August 1''': [[iNoMed]] [https://conwaylife.com/forums/viewtopic.php?p=164406#p164406 completes] a [[R-pentomino hasslers#p93|p93 R-pentomino hassler]], the first engine-based period-93 oscillator, based on a partial result by [[Carson Cheng]].
* '''July 22''': [[iNoMed]] [https://conwaylife.com/forums/viewtopic.php?&p=164021#p164021 completes] a [[period-41 glider gun]] using a design by [[Matthias Merzenich]] based on a partial result by [[May13]] and [[David Raucci]]. iNoMed subsequently [https://conwaylife.com/forums/viewtopic.php?p=164030#p164030 constructs] a much smaller p41 gun using an alternate design.
* '''July 21''': [[Keith Amling]] [https://conwaylife.com/forums/viewtopic.php?p=163987#p163987 completes] a [[c/5 orthogonal]] [[greyship]] with a record-breaking steep descent.
* '''July 21''': [[Nico Brown]] [https://conwaylife.com/forums/viewtopic.php?p=163972#p163972 discovers] a [[204P41|180&deg; p41 dependent reflector loop]], the first {{period|41}} oscillator, proving that Life is [[omniperiodic]]. Brown also [https://conwaylife.com/forums/viewtopic.php?p=163993#p163993 finds] a related 90&deg; p41 dependent reflector a few hours later. [[May13]] then [https://conwaylife.com/forums/viewtopic.php?p=164009#p164009 constructs] an independent [[bumper]]-based p41 reflector using the 180&deg; dependent reflector.
* '''July 14''': [[Mitchell Riley]] [https://conwaylife.com/forums/viewtopic.php?p=163664#p163664 discovers] [[cribbage]], the first {{period|19}} oscillator, leaving period 41 as the only period for which no oscillator is known.
* '''July 13''': [[Nico Brown]] [https://conwaylife.com/forums/viewtopic.php?p=163639#p163639 discovers] and subsequently [https://conwaylife.com/forums/viewtopic.php?p=163643#p163643 reduces] the first engine-based {{period|59}} [[gun]] which is much smaller than the [[p59_dependent_reflector_loop#Other_uses_of_the_dependent_reflector|previous Herschel-based record]].
* '''July 6''': [[Darren Li]] [https://gitlab.com/ascendantdreamweaver/scourge releases] [[scourge]], an [[ikpx]]-like oscillator search program.
* '''June 29''': [[Nico Brown]] [https://conwaylife.com/forums/viewtopic.php?p=163131#p163131 discovers] the [[p71 dependent reflector loop]], the smallest known {{period|71}} [[oscillator]].
* '''June 29''': [[Nico Brown]] [https://github.com/nicobrownmath/LocalForce/tree/spaceship releases] a modification of [[LocalForce]] that can be used to search for [[dependent reflector]]s.
* '''June 16''': [[Martin Grant]] [https://conwaylife.com/forums/viewtopic.php?p=162720#p162720 discovers] fenceposts for a very thin period-8 wick that was first presented in [[Lifeline_Volume_3#Page_17|Lifeline Volume 3]] in 1971.
* '''June 11''': [[Andrew J. Wade]] [https://conwaylife.com/forums/viewtopic.php?p=162576#p162576 disproves] the existence of 4-cell-high [[orphan]]s in Conway's Game of Life.  5-cell-high orphans had previously been discovered by [[Steven Eker]] in 2016.
* '''June 6''': The [[Unnamed (34,7)c/156 spaceship|(34,7)c/156 spaceship]] project, based on the [[(34,7)c/156 Herschel climber]], [https://conwaylife.com/forums/viewtopic.php?p=162379#p162379 is completed] by [[Luka Okanishi]].
* '''June 2''': The [[Stable Storage Spaceship]] project [https://conwaylife.com/forums/viewtopic.php?p=162210#p162210 is completed] by [[Goldtiger997]], resulting in an [[engineered spaceship]] consisting of a [[glider]] colliding with a large [[still life]] [[constellation]].
* '''May 26''': [[Carson Cheng]] [https://conwaylife.com/forums/viewtopic.php?p=161994#p161994 discovers] the [[Pi-heptomino_hasslers#p78|p78 pi-heptomino hassler]], the first engine-based {{period|78}} [[oscillator]].
* '''May 18''': [[Period1GliderGun]] [https://conwaylife.com/forums/viewtopic.php?&p=161675#p161675 discovers] [[mold on fire-spitting]], a previously unnoticed [[LCM oscillator]] which is the smallest known non-trivial {{period|12}} oscillator.
* '''May 14''': [[Mitchell Riley]] [https://discord.com/channels/357922255553953794/370571014654001154/1107315680287653888 discovers] the [[p82 lumps of muck hassler]], the smallest known {{period|82}} [[oscillator]].
* '''May 11-16''':  [[Andrew Trevorrow]] [https://conwaylife.com/forums/viewtopic.php?f=11&t=6015 makes available] two versions of a "HatLife" Glu script that can explore cellular automata running on tilings of the recently discovered aperiodic "hat" monotile.
* '''May 11''': [[Adam P. Goucher]] [https://conwaylife.com/forums/viewtopic.php?p=161411#p161411 assembles] a very large [[stable]] [[constellation]] (22,620 ON cells) that acts as a one-[[MWSS]] [[spacefiller]] [[seed]].
* '''May 8-9''': [[Keith Amling]] [https://conwaylife.com/forums/viewtopic.php?p=161321#p161321 discovers] simple wick-based c/5 [[greyship]] connections that allow the construction of new greyships and [[Wickstretcher#Greystretchers|stretchers]].
* '''April 23''': [[Matthias Merzenich]] [https://conwaylife.com/forums/viewtopic.php?p=160785#p160785 completes] the first [[2c/5 orthogonal]] [[wickstretcher]] based on a partial result by [[Keith Amling]].
* '''April 21''': [[Mitchell Riley]] [https://discord.com/channels/357922255553953794/370571014654001154/1099006580030185472 discovers] [[42P38]], the smallest known {{period|38}} [[oscillator]].
* '''April 21''': [[Nico Brown]] [https://conwaylife.com/forums/viewtopic.php?p=160728#p160728 discovers] the [[p67 B-heptomino hassler]], the first engine-based {{period|67}} [[oscillator]].
* '''April 21''': [[Nico Brown]] [https://conwaylife.com/forums/viewtopic.php?p=160719#p160719 discovers] the [[p68 century hassler]], the smallest known {{period|68}} [[oscillator]].
* '''April 19''': [[Mitchell Riley]] [https://conwaylife.com/forums/viewtopic.php?p=160630#p160630 discovers] the [[p26 honey farm hassler]], the smallest known [[non-trivial]] {{period|26}} [[oscillator]].
* '''April 18''': Forum user 'blah' [https://conwaylife.com/forums/viewtopic.php?p=160607#p160607 completes] a period-2^18 WireWorld metacell running in the Conway's Life rule.
* '''April 18''': [[Nico Brown]] [https://conwaylife.com/forums/viewtopic.php?p=160604#p160604 discovers] the first engine-based [[Period-49_glider_gun_(April_2023)|period-49 glider gun]] which is much smaller than previous [[Hotcrystal0_reaction#Generalized form|glider loop based guns]].
* '''April 10''': [[Frank Everdij]] [https://conwaylife.com/forums/viewtopic.php?p=160290#p160290 discovers] a [[c/6 diagonal]] [[tubstretcher]], the first c/6 diagonal [[wickstretcher]] of any type.
* '''April 8''': [[Keith Amling]] [https://conwaylife.com/forums/viewtopic.php?p=160239#p160239 discovers] a [[c/5 diagonal]] [[barberpole]] [[wickstretcher|stretcher]].
* '''April 5''': [[Mitchell Riley]] [https://conwaylife.com/forums/viewtopic.php?p=160181#p160181 discovers] the first engine-based period-61 [[gun]] which is significantly smaller than previously known guns of this period.
* '''April 4''': [[Keith Amling]] [https://conwaylife.com/forums/viewtopic.php?p=160041#p160041 completes] a [[c/5 diagonal]] [[linestretcher]] with help from [[Matthias Merzenich]]. Merzenich [https://conwaylife.com/forums/viewtopic.php?p=160048#p160048 finds] an alternate solution to Amling's partial result soon after.
* '''April 2''': [[Mitchell Riley]] [https://conwaylife.com/forums/viewtopic.php?p=160180#p160180 discovers] a period-42 oscillator whose [[volatility#strict|strict volatility]] matches its ordinary [[volatility]]. This was the last composite period for which no such oscillator was known.
* '''April 1''': New smallest known oscillators of periods [[72P119|119]], [[51P384|128, 192, 256, and 384]] -- [[Table_of_oscillators_by_period|SKOPs]] -- are posted by [[Mitchell Riley]], and by [[iNoMed]], [[Adam P. Goucher]], and  [[Carson Cheng]] based on the initial period-384 oscillator discovery.
* '''March 23''': [[Keith Amling]] [https://conwaylife.com/forums/viewtopic.php?p=159458#p159458 constructs] and [[Matthias Merzenich]] [https://conwaylife.com/forums/viewtopic.php?p=159470#p159470 reduces] a new [[quartermax]] variant based on a partial result by [[Hartmut Holzwart]].
* '''March 21''': [[Keith Amling]] [https://conwaylife.com/forums/viewtopic.php?p=159336#p159336 completes] a [[c/2 orthogonal]] [[agar ship]] for a high-density period-2 agar.
* '''March 19''': [[Adam P. Goucher]] [https://conwaylife.com/forums/viewtopic.php?p=159240#p159240 assembles] a 1227-glider [[spacefiller]] [[glider synthesis|synthesis]] based on a reduced final stage by [[Goldtiger997]]; optimizations are continuing, with a 1153-glider synthesis available on March 23.
* '''March 15''': [[Keith Amling]] [https://conwaylife.com/forums/viewtopic.php?p=159069#p159069 completes] a [[c/5 orthogonal]] [[ants]] waveguide.
* '''March 13''': [[Goldtiger997]] [https://conwaylife.com/forums/viewtopic.php?p=158923#p158923 completes] a 2373-glider [[spacefiller]] [[glider synthesis|synthesis]], reduced the same day to 2283 gliders (with more reductions likely).
* '''March 9''': [[Keith Amling]] [https://conwaylife.com/forums/viewtopic.php?p=158775#p158775 discovers] a [[c/4 diagonal]] [[barberpole]] [[wickstretcher]].
* '''March 9''': [[Mitchell Riley]] [https://conwaylife.com/forums/viewtopic.php?p=158774#p158774 discovers] a small elementary 0-degree colour preserving [[Stable reflector|stable glider reflector]] with repeat time 59.
* '''March 6''': [[iNoMed]] [https://conwaylife.com/forums/viewtopic.php?p=158649#p158649 discovers] and [[Matthias Merzenich]] [https://conwaylife.com/forums/viewtopic.php?p=158651#p158651 slightly reduces] a record-breaking small period-68 [[gun]] based on a new [[oscillator]] by [[Mitchell Riley]].
* '''March 4''': [[Charity Engine]] [https://conwaylife.com/forums/viewtopic.php?p=159163#p159163 discovers] a symmetric soup producing four copies of [[14P2.4]]. This means that all known still lifes, oscillators, and spaceships up to 15 cells have occurred at least [[semi-natural]]ly, although [https://conwaylife.com/forums/viewtopic.php?p=140882#p140882 some] have still not occurred [[natural]]ly.
* '''March 2''': [[Mitchell Riley]] [https://conwaylife.com/forums/viewtopic.php?p=158612#p158612 discovers] a record-breaking small period-52 [[gun]].
* '''February 26''': [[Goldtiger997]] [https://conwaylife.com/forums/viewtopic.php?p=158264#p158264 finds] the activation step for a [[spacefiller]] [[glider synthesis|synthesis]].
* '''February 21-22''': The first occurrence of the 15-cell still life [https://catagolue.hatsya.com/object/xs15_321e88gzxca1/b3s23 xs15_321e88gzxca1] [https://conwaylife.com/forums/viewtopic.php?p=158017#p158017 appears] in a random [[soup]] found by [[Charity Engine]]. Charity Engine also [https://conwaylife.com/forums/viewtopic.php?p=158077#p158077 finds] a second occurrence of this still life less than 24 hours later. This leaves the [[long|long<sup>9</sup>]] extension of [[snake]] as the only 15-cell still life not known to occur [[natural]]ly.
* '''February 17''': [[Keith Amling]] [https://conwaylife.com/forums/viewtopic.php?p=157697#p157697 discovers] a [[c/4 diagonal]] [[linestretcher]] that can stretch lines with the closest possible spacing.
* '''February 15''': [[Keith Amling]] [https://conwaylife.com/forums/viewtopic.php?p=157631#p157631 completes] a [[c/4 diagonal]] maximum-density multi-[[tubstretcher]] based on a [[wave]] by [[Hartmut Holzwart]].
* '''February 14''': [[Carson Cheng]] [https://conwaylife.com/forums/viewtopic.php?&p=157535#p157535 discovers] a 6-glider [[synthesis]] of [[amphisbaena]], showing that every 11-cell [[still life]]  can be synthesized with 6 or fewer gliders.
* '''February 13''': The [[Conwaylife Lounge]] Discord server reaches 1,000 members.
* '''February 2''': [[Keith Amling]] [https://conwaylife.com/forums/viewtopic.php?p=156856#p156856 discovers] an extensible [[wickstretcher]] and an [[agar ship]] based on the [[overweight spaceship]].
* '''February 1''': [[David Bell]] [https://conwaylife.com/forums/viewtopic.php?p=156771#p156771 completes], and Goldtiger997 later [https://conwaylife.com/forums/viewtopic.php?p=156865#p156865 optimizes], a [[stable]] [[pseudo-Heisenburp]] device that detects a passing c/3 [[crotchet ship]] by removing its final [[anacrusis]] and then adding it back later.
* '''January 31''': [[Mitchell Riley]] [https://conwaylife.com/forums/viewtopic.php?p=156728#p156728 discovers] [[94P53]], the first known [[engine]]-based period-53 oscillator.
* '''January 24''': [[Charity Engine]] [https://conwaylife.com/forums/viewtopic.php?p=156408#p156408 discovers] a [[strictly volatile]] period-25 oscillator, [[Charity's p25]].
* '''January 23''': [[Keith Amling]] [https://conwaylife.com/forums/viewtopic.php?p=156338#p156338 discovers] a period-8 c/2 [[greystretcher]] component that uses blocks to stabilize the [[zebra stripes]].
* '''January 20''': [[Darren Li]] uses [[Open Science Grid]] and a modified [[ikpx2]] to find [https://conwaylife.com/forums/viewtopic.php?p=156206#p156206 a surprisingly small (2,1)c/6 tagalong], which can be attached to [[Sir Robin]], [[Sir Sprayer]], and various minstrels in a wide variety of ways, including a connection to itself.
* '''January 20''': [[Matthias Merzenich]] [https://conwaylife.com/forums/viewtopic.php?p=156198#p156198 completes] a [[gliderless]] lightweight spaceship gun based on [https://conwaylife.com/forums/viewtopic.php?p=156185#p156185 a partial result] by [[iNoMed]] and [[Christopher D'Agostino]].
* '''January 17-19''': [[Carson Cheng]] and [[iNoMed]] [https://conwaylife.com/forums/viewtopic.php?p=156093#p156093 discover] small [[glider gun]]s for periods 70, 72, and 84.
* '''January 12''': [[Adam P. Goucher]] [https://conwaylife.com/forums/viewtopic.php?p=155852#p155852 discovers] the [[walrus]], the first known elementary [[c/8 diagonal]] [[spaceship]].
* '''January 2-8''': [[Rocknlol]] [https://conwaylife.com/forums/viewtopic.php?p=155419#p155419 reduces] the minimum population record for a [[Max]] predecessor to 110 cells. Rocknlol subsequently [https://conwaylife.com/forums/viewtopic.php?f=2&p=155703#p155703 reduces] this by finding a 107-cell Max predecessor, as well as a predecessor fitting in a record 21&times;19 bounding box.
 
==2022==
* '''December 29-31''': [[iNoMed]] [https://conwaylife.com/forums/viewtopic.php?p=155354#p155354 finds] a 127-cell [[Max]] predecessor, the smallest such pattern known in terms of population. [[Rocknlol]] [https://conwaylife.com/forums/viewtopic.php?p=155419#p155419 improves this further] by finding a 112-cell Max predecessor, as well as a predecessor fitting in a record 21&times;21 bounding box.
* '''December 23-28''': [[Goldtiger997]] finds the key activation steps for another [[2c/5]] [[spaceship]], [https://conwaylife.com/forums/viewtopic.php?p=155161#p155161 66P5H2V0], and another [[c/4]] diagonal spaceship, [https://discord.com/channels/357922255553953794/370571014654001154/1057593135489892382 37P4H1V1].
* '''December 13''': [[Keith Amling]] [https://conwaylife.com/forums/viewtopic.php?p=154825#p154825 constructs] a [[c/4 orthogonal]] "[[agar]] [[spaceship]]" escorting an adjustable-sized patch of period-4 "[[OWSS]] agar".
* '''December 12''': [[Mitchell Riley]] [https://conwaylife.com/forums/viewtopic.php?p=154792#p154792 discovers] the first known [[engine]]-based period-61 oscillator, a [[Pi-heptomino_hasslers#p61|p61 pi-heptomino hassler]]. This also becomes the smallest known p61 oscillator.
* '''December 12''': [[Keith Amling]] [https://conwaylife.com/forums/viewtopic.php?p=154748#p154748 discovers] a [[light speed]] fuse capable of extending a [[c/3 orthogonal]] [[wave]].
* '''December 9''': [[Goldtiger997]] [https://conwaylife.com/forums/viewtopic.php?p=154625#p154625 finds] a [[glider synthesis|synthesis]] component for extending a [[c/3 orthogonal]] [[spaceship]]. This gives the first known infinite series of synthesizable c/3 spaceships.
* '''December 5''': [[Frank Everdij]] [https://conwaylife.com/forums/viewtopic.php?p=154464#p154464 discovers] [[taco]], the third known elementary [[c/7 orthogonal]] [[spaceship]].
* '''December 2-3''': [[Nico Brown]] [https://conwaylife.com/forums/viewtopic.php?p=154361#p154361 publishes] a script for constructing a [[strictly volatile]] [[oscillator]] with any period greater than or equal to 945.
* '''November 25''': [[Goldtiger997]] [https://conwaylife.com/forums/viewtopic.php?p=154110#p154110 finishes] a 99-[[glider]] [[synthesis]] of a previously unsynthesized spaceship, "[[brain]]", solving a [https://conwaylife.com/forums/viewtopic.php?p=22530#p22530 long-standing open problem].
* '''November 21''': [[gravity]] [https://conwaylife.com/forums/viewtopic.php?p=153956#p153956 discovers] another new [[Methuselah#Infinite_growth|puffer-based methuselah]] within {{times|20|20}}, this time lasting 126,932,978 generations.
* '''November 17''': [[Nico Brown]] [https://conwaylife.com/forums/viewtopic.php?p=153747#p153747 discovers] the first [[true]] period-34 [[glider gun]].
* '''November 15''': [[May13]] [https://conwaylife.com/forums/viewtopic.php?p=153564#p153564 completes] the 21-cell [[still life]] [[synthesis]] project. The project has spanned over a year and is the work of a large number of contributors.
* '''November 12''': [[Nico Brown]] [https://conwaylife.com/forums/viewtopic.php?p=153483#p153483 discovers] the [[p43 pi-heptomino hassler]], the smallest known {{period|43}} [[oscillator]].
* '''November 12-15''': [[Pavel Grankovskiy]] [https://conwaylife.com/forums/viewtopic.php?p=153465#p153465 reduces] the cost of the [[reverse caber-tosser]] to 15 gliders, and produces a new [https://conwaylife.com/forums/viewtopic.php?p=153609#p153609 "RCT15" demo pattern] and associated viewer scripts.
* '''November 11''': [[Goldtiger997]] [https://conwaylife.com/forums/viewtopic.php?p=153452#p153452 constructs] the [[Speed Orthogonal Loopship]], a new [[adjustable spaceship|adjustable]] [[loopship]] design.
* '''November 9''': A "[[semi-natural]]" [[Gosper glider gun]] [https://catagolue.hatsya.com/hashsoup/C4_4/o_hjWdgGhm7agu146534448/b3s23 appears] on Catagolue for the first time, in a [[symmetric]] [[soup]].
* '''November 8''': [[May13]] [https://conwaylife.com/forums/viewtopic.php?p=153274#p153274 finds] [[glider synthesis|syntheses]] for the last two 20-cell [[pseudo still life]]s.
* '''November 8''': [[Nico Brown]] [https://conwaylife.com/forums/viewtopic.php?p=153284#p153284 discovers] the [[diamondback]], which is tied with [[rattlesnake]] for the smallest known {{period|11}} [[oscillator]].
* '''November 8''': [[Matthias Merzenich]] [https://conwaylife.com/forums/viewtopic.php?p=153266#p153266 discovers] a dependent [[bouncer]]-based period-23 glider reflector using [[92P23|an oscillator]] by [[Mitchell Riley]]. This is the first p23 reflector of any type to be found.
* '''November 7''': [[Mitchell Riley]] [https://conwaylife.com/forums/viewtopic.php?p=153250#p153250 discovers] the first [[true]] [[period-25 glider gun]].
* '''November 7-9''': [[Pavel Grankovskiy]] [https://conwaylife.com/forums/viewtopic.php?p=153201#p153201 posts] an [[RCT]] demo pattern with all ash trails successfully cleaned up, and two days later [https://conwaylife.com/forums/viewtopic.php?p=153348#p153348 completes] the remaining cleanup and construction tasks at the [[epicentre]] -- demonstrating in detail that any glider-constructible pattern can be constructed with exactly 16 gliders.
* '''November 4-6''': [[Nico Brown]] [https://conwaylife.com/forums/viewtopic.php?p=153058#p153058 discovers] the [[70P23|p23 pi-heptomino hassler]], the smallest known {{period|23}} [[oscillator]] up to that point, and then [https://conwaylife.com/forums/viewtopic.php?p=153183#p153183 finds] yet another smaller p23 oscillator, [[55P23]], two days later.
* '''November 3''': [[Nico Brown]] [https://conwaylife.com/forums/viewtopic.php?p=153032#p153032 discovers] [[54P94]], the smallest known {{period|94}} [[oscillator]].
* '''November 2''': [[Nico Brown]] [https://conwaylife.com/forums/viewtopic.php?p=153007#p153007 discovers] a small [[period-51 glider gun]], whose capped version is also the smallest known {{period|51}} [[oscillator]].
* '''October 30''': [[Luke Kiernan]] [https://conwaylife.com/forums/viewtopic.php?p=152874#p152874 discovers] [[p73 lumps of muck hassler]], the smallest known {{period|73}} [[oscillator]].
* '''October 24''': [[Mitchell Riley]] [https://conwaylife.com/forums/viewtopic.php?p=152606#p152606 discovers] a smaller period-32 [[glider gun]] using a new twin bees hassler.
* '''October 21''': [[Simon Ekström]] [https://conwaylife.com/forums/viewtopic.php?p=152460#p152460 discovers] [[NW-2T16]], a new [[Herschel-to-glider]] converter which [https://conwaylife.com/forums/viewtopic.php?p=152506#p152506 can also be used] to create the [[SKOP|smallest known oscillators of periods]] 89, 97, 101, and 103.
* '''October 20''': New user [[gravity]] [https://conwaylife.com/forums/viewtopic.php?p=152437#p152437 discovers] a [[List_of_long-lived_methuselahs#Puffer-based_methuselahs|puffer-based methuselah]] within a {{times|20|20}} [[bounding box]] lasting 13,629,876 generations.
* '''October 20''': Voting for the [https://conwaylife.com/forums/viewtopic.php?f=2&t=5747 belated 2012 Pattern of the year competition] has been extended to the end of the year.
* '''October 8''': [[Charity Engine]] [https://conwaylife.com/forums/viewtopic.php?p=151938#p151938 discovers] [[34P20]], the smallest known non-[[LCM]]-based {{period|20}} [[oscillator]]. It is also the first known period-20 oscillator with [[volatility]] 1, although it is not [[strictly volatile]].
* '''October 3''': [[Mitchell Riley]] and [[iNoMed]] [https://conwaylife.com/forums/viewtopic.php?p=151727#p151727 discover] [[52P44]], the smallest non-[[LCM]]-based {{period|44}} [[oscillator]].
* '''October 3''': [[cvojan]] and [[iNoMed]] [https://conwaylife.com/forums/viewtopic.php?p=151695#p151695 discover] a [[period-40 glider gun]] with a 27&times;20 [[bounding box]] - the fourth smallest of a glider gun with a unique period.
* '''October 3''': The [[Open Science Grid]] [https://conwaylife.com/forums/viewtopic.php?p=151700#p151700 discovers] [[76P86]], the smallest known {{period|86}} [[oscillator]], using [[apgsearch]].
* '''October 2''': Using parts of a new [https://conwaylife.com/forums/viewtopic.php?p=151696#p151668 extensible 8-engine Cordership], [[Brett Berger]] [https://conwaylife.com/forums/viewtopic.php?p=151675#p151675 completes] a pattern that produces a single glider stream with an irrational bit density, followed by another pattern that emits gliders in a line whose slope is the golden ratio.
* '''October 2''': [[cvojan]] and [[vivi]] [https://conwaylife.com/forums/viewtopic.php?p=151670#p151670 discover] a [[period-24 glider gun]] with a 21&times;20 [[bounding box]], later [https://conwaylife.com/forums/viewtopic.php?p=151697#p151697 reduced] to 20&times;20 by [[James Pascua]], making it the second smallest known glider gun with a unique period.
* '''October 2''': [[Charity Engine]] [https://conwaylife.com/forums/viewtopic.php?p=151681#p151681 discovers] a small [[p28 block puffer]] using [[apgsearch]].
* '''October 2''': [[Mitchell Riley]] [https://conwaylife.com/forums/viewtopic.php?p=151646#p151646 finds] a [[92P23|third period-23 oscillator engine]], a beehive-and-honeyfarm hassler.
* '''October 1''': [[Nico Brown]] [https://conwaylife.com/forums/viewtopic.php?p=151619#p151619 discovers] [[115P106]], the smallest known {{period|106}} [[oscillator]].
* '''October 1''': [[Luke Kiernan]] and [[iNoMed]] [https://conwaylife.com/forums/viewtopic.php?p=151605#p151605 discover] the [[p68 pi-heptomino hassler]], the smallest known {{period|68}} [[oscillator]].
* '''September 27''': [[Luke Kiernan]] [https://conwaylife.com/forums/viewtopic.php?p=151430#p151430 discovers] the [[p79 pi-heptomino hassler]], both the smallest known {{period|79}} [[oscillator]] and the first of that period not based on adjustable-period mechanisms.
* '''September 23''': [[Mitchell Riley]] [https://conwaylife.com/forums/viewtopic.php?p=151303#p151303 finds] [[70P26|a new SKOP26]] ([[SKOP|Smallest Known Oscillator of Period]] 26), using an unusual [[catalyst]] [[constellation]] made up of an [[elevener]] plus a common [[ship]]+[[fishhook]] combination.
* '''September 22''': googleplex [https://conwaylife.com/forums/viewtopic.php?p=151285#p151285 completes] a previously unfinished [[c/4 orthogonal]] moving [[wick]] from the '''jslife-moving''' collection, adding a front end to a back end found by [[Hartmut Holzwart]].
* '''September 22''': A new period-86 [[R-pentomino]] [[hassle|hassling]] oscillator and [[Herschel]] [[factory]] is [https://conwaylife.com/forums/viewtopic.php?p=151276#p151276 discovered] by Nico Brown, adjusted by iNoMed, and made strict-[[volatility]] by Nico Brown with several variants with different relative phases.
* '''September 14''': The [[Open Science Grid]] finds simpler [[glider syntheses]] for multiple [[oscillator]]s, specifically [https://conwaylife.com/forums/viewtopic.php?p=151006#p151006 5 gliders] for the [[caterer]] and [https://conwaylife.com/forums/viewtopic.php?p=151012#p151012 6 gliders each] for [[bi-pentadecathlon 1]] and [[boat tie bipole]].
* '''September 14''': [[Mitchell Riley]] [https://conwaylife.com/forums/viewtopic.php?p=151003#p151003 discovers] [[108P59]], the smallest known {{period|59}} [[oscillator]].
* '''September 12''': [[Mitchell Riley]] [https://conwaylife.com/forums/viewtopic.php?p=150930#p150930 discovers] the [[p94 R-pentomino hassler]], the smallest known {{period|94}} [[oscillator]].
* '''September 11''': [[Nico Brown]] [https://conwaylife.com/forums/viewtopic.php?p=150882#p150882 discovers] the first true [[period-43 glider gun]] and, as a corollary, the first non-[[Snark]]-based {{period|43}} [[oscillator]].
* '''September 1''': [[Mitchell Riley]] [https://conwaylife.com/forums/viewtopic.php?p=150469#p150469 discovers] the [[p71 honey farm hassler]], the smallest known {{period|71}} [[oscillator]].
* '''August 26''': [[Luke Kiernan]] [https://conwaylife.com/forums/viewtopic.php?p=150241#p150241 discovers] the [[p85 R-pentomino hassler]], which in its minimum form is the smallest known {{period|85}} [[oscillator]].
* '''August 21''': [[Luka Okanishi]] [https://conwaylife.com/forums/viewtopic.php?p=149933#p149933 completes] the [[p129 R-pentomino hassler]] based on a partial result by [[Luke Kiernan]]. With only 38 cells, it is the smallest known {{period|129}} oscillator.
* '''August 16''': [[Mitchell Riley]] [https://conwaylife.com/forums/viewtopic.php?p=149645#p149645 discovers] new [[pi-heptomino hassler]]s of periods 35, 40, 58, and 160, while [[Carson Cheng]] finds a new [[honey farm hassler]] of period 24.
* '''August 16''': [[EvinZL]] [https://conwaylife.com/forums/viewtopic.php?p=149677#p149677 completes] an "octo3g" orientation-agnostic hash library for the existing database of 3-glider collisions, allowing active 3G collision patterns to be searched in the same way as the previous octo3obj and octohash databases, with (probably) no false positives.
* '''August 11''': [[Charity Engine]] [https://conwaylife.com/forums/viewtopic.php?p=149466#p149466 discovers] [[p11 thumb]], a small {{period|11}} [[oscillator]] and the first with an asymmetric [[rotor]] to appear in an official [[Catagolue]] symmetry.
* '''August 9''': [[Luke Kiernan]] [https://conwaylife.com/forums/viewtopic.php?p=149347#p149347 discovers] a [[p45 pi-heptomino hassler]] with only 29 cells, making it the smallest known {{period|45}} [[oscillator]].
* '''August 9''': The [[Open Science Grid]] begins contributing CPU and GPU resources to [[Catagolue]].
* '''August 8''': [[Luke Kiernan]] [https://conwaylife.com/forums/viewtopic.php?p=149315#p149315 discovers] [[R-pentomino]] [[hassler]]s of periods [[p49 R-pentomino hassler|49]] and [[p91 R-pentomino hassler|91]]. The former is the smallest known {{period|49}} [[oscillator]] by population, while the latter [https://conwaylife.com/forums/viewtopic.php?p=149322#p149322 can be turned] into the smallest known period-91 [[glider gun]].
* '''August 4''': [[Nico Brown]] [https://conwaylife.com/forums/viewtopic.php?p=149120#p149120 discovers] a [[p220 honey farm hassler]].
* '''August 2''': [[Charity Engine]] [https://conwaylife.com/forums/viewtopic.php?p=149077#p149077 discovers] [[34P7]], a small {{period|7}} [[sparker]] with similar functionality to the previously-discovered [[meatball]].
* '''July 30 - August 2''': [[Charity Engine]] [https://conwaylife.com/forums/viewtopic.php?p=148949#p148949 discovers] a [[semi-natural]] [[methuselah]] lasting 128,719 generations, the longest lifespan known for an [[apgsearch]] [[soup]] excluding those which continue to grow infinitely after "going boring". Three days later [https://conwaylife.com/forums/viewtopic.php?p=149071#p149071 a second one] is discovered lasting 132,364 generations.
* '''July 29''': [[iNoMed]] [https://conwaylife.com/forums/viewtopic.php?p=148834#p148834 discovers] the smallest known period-92 oscillator, a 44-cell [[LCM oscillator]] consisting of a [[mold]] interacting with a previously-overlooked spark from a [[twin bees shuttle]] variant.
* '''July 25''': [[Mitchell Riley]] [https://conwaylife.com/forums/viewtopic.php?p=148702#p148702 discovers] a new stabilization of the [[p44 pi-heptomino hassler]] using only [[block]]s and [[eater 2]]s, while [[dani]] [https://conwaylife.com/forums/viewtopic.php?p=148703#p148703 finds] a period-sextupling mechanism that works with all versions of the oscillator.
* '''July 25''': [[Simon Ekström]] [https://conwaylife.com/forums/viewtopic.php?p=148650#p148650 discovers] a small, stable 180-degree glider [[reflector]].
* '''July 25''': [[Entity Valkyrie]] [https://conwaylife.com/forums/viewtopic.php?p=148649#p148649 discovers] the [[p82 pi-heptomino hassler]], the smallest known {{period|82}} [[oscillator]].
* '''July 24''': [[Tanner Jacobi]] [https://conwaylife.com/forums/viewtopic.php?p=148590#p148590 discovers] <!-- https://discord.com/channels/357922255553953794/370571014654001154/1000611893007880323 --> the [[speed tunnel]], a [[Spartan|non-Spartan]] [[Glider-to-Herschel converter|glider-to-Herschel conduit]] with a repeat time of 61 ticks, which makes it the fastest G-to-H conduit discovered to date.
* '''July 23''': [[Mitchell Riley]] [https://conwaylife.com/forums/viewtopic.php?p=148557#p148557 discovers] a new {{period|22}} [[century]] [[hassle]]r.
* '''July 15''': [[Carson Cheng]] [https://discord.com/channels/357922255553953794/370571014654001154/997664404323709048 reveals himself] as the author of numerous randomly-generated [[glider syntheses]] covertly submitted to [[Catagolue]] over the last few months, most notably a 4-glider [[bipole]] and a 5-glider [[octagon II]].
* '''July 15''': [[Tanner Jacobi]] [https://conwaylife.com/forums/viewtopic.php?p=148274#p148274 discovers] an 8-glider [[synthesis]] for [https://catagolue.hatsya.com/object/xs14_dbgzw1qm/b3s23 xs14_dbgzw1qm], which means that all strict 14-cell [[still life]]s can be synthesized with 9 or fewer gliders.
* '''July 14''': [[Mitchell Riley]] [https://conwaylife.com/forums/viewtopic.php?p=148244#p148244 discovers] a new glider-releasing H-to-R [[conduit]], and [[Matthias Merzenich]] uses it to [https://conwaylife.com/forums/viewtopic.php?p=148237#p148237 reduce] the size of the smallest known [[true]] period 59, 61, 67, and 77 [[gun]]s.
* '''July 11-14''': [[Mitchell Riley]] and [[wwei23]] [https://conwaylife.com/forums/viewtopic.php?p=148173#p148173 discover] [[43P54]], the smallest known period-54 oscillator. [[David Raucci]] and [[hotcrystal0]] then use this oscillator to [https://conwaylife.com/forums/viewtopic.php?p=148236#p148236 reduce] the size of the smallest known period-54 [[gun]].
* '''July 6''': [[Mitchell Riley]] and [[ljkiernan1]] [https://conwaylife.com/forums/viewtopic.php?p=147980#p147980 discover] a [[200P199|period-199 oscillator]] whose reduced form also functions as a [[pipsquirter]].
* '''July 6''': [[Mitchell Riley]] and [[ljkiernan1]] [https://conwaylife.com/forums/viewtopic.php?p=147972#p147972 discover] a [[p146 pi-heptomino hassler]], which is later [https://conwaylife.com/forums/viewtopic.php?p=147977#p147977 monomerized] by [[Evin]] and [https://discord.com/channels/357922255553953794/370571014654001154/994432762603905074 reduced] to have a minimum population of only 52 cells.
* '''July 6''': [[Mitchell Riley]] [https://conwaylife.com/forums/viewtopic.php?p=147943#p147943 discovers] the first [[non-trivial]] period-34 oscillator, [[74P34]]. Using a resulting p34 beehive hassler by "MAP bot", [[iNoMed]] [https://conwaylife.com/forums/viewtopic.php?p=147953#p147953 completes] a p34 [[bumper]] reflector.
* '''July 6''': Based on a [https://conwaylife.com/forums/viewtopic.php?p=147886#p147886 partial result] by [[Hartmut Holzwart]], [[Keith Amling]] [https://conwaylife.com/forums/viewtopic.php?p=147929#p147929 completes] a width-12 [[chicken wire]] [[greyship]] with a slope-0 back end, filling in the final gap in the collection of slope-0 chicken wire back ends.
* '''July 5''': [[Mitchell Riley]] [https://conwaylife.com/forums/viewtopic.php?p=147909#p147909 discovers] a new period-83 oscillator, [[62P83]], and [[iNoMed]] uses two copies to [https://conwaylife.com/forums/viewtopic.php?p=147908#p147908 construct] a small period-83 [[glider gun]].
* '''July 2-3''': [[yaochen2]] and [[dani]] [https://conwaylife.com/forums/viewtopic.php?p=147829#p147829 discover] [https://conwaylife.com/forums/viewtopic.php?p=147834#p147834 various] [[switch engine]]-based [[methuselah]]s within a 16&times;16 bounding box, including one lasting 4,764,364 generations.
* '''July 2''': [[ljkiernan1]] [https://conwaylife.com/forums/viewtopic.php?p=147819#p147819 discovers] [[74P127]], the highest prime-period oscillator not based on adjustable-period loops.
* '''June 30''': [[Charity Engine]] [https://conwaylife.com/forums/viewtopic.php?p=147745#p147745 discovers] [[Charity's p16]], a relatively small period-16 oscillator.
* '''June 29''': [[Goldtiger997]] [https://conwaylife.com/forums/viewtopic.php?p=147675#p147675 discovers] a [[glider synthesis]] for [[29P3H1V0]], meaning that all known [[spaceship]]s with up to 31 cells have a known synthesis.
* '''June 26''': [[ljkiernan1]] [https://conwaylife.com/forums/viewtopic.php?p=147576#p147576 discovers] the [[p58 pi-heptomino hassler]], the smallest known period-58 oscillator. Dani uses this to [https://conwaylife.com/forums/viewtopic.php?p=147579#p147579 construct] a [[gliderless]] p58 lightweight spaceship gun.
* '''June 24''': [[ljkiernan1]] [https://conwaylife.com/forums/viewtopic.php?p=147511#p147511 discovers] [[58P37]], the smallest known period-37 oscillator and the first one that can be used to create a [https://conwaylife.com/forums/viewtopic.php?p=147512#p147512 period-37 glider gun].
* '''June 20''': [[iNoMed]] [https://conwaylife.com/forums/viewtopic.php?p=147341#p147341 reduces] the [[p4-assisted period-28 glider gun]], making it the fifth-smallest glider gun with a distinct period and leading to [https://conwaylife.com/forums/viewtopic.php?p=147342#p147342 additional reductions] to the [[period-14 glider gun|pseudo-p14 glider gun]].
* '''June 14''': [[David Raucci]] [https://conwaylife.com/forums/viewtopic.php?p=147102#p147102 discovers] a [[p10 domino fountain|strong period-10 domino sparker]].
* '''June 6''': [[Keith Amling]] [https://conwaylife.com/forums/viewtopic.php?p=146680#p146680 completes] a c/2 wire width 2 [[chicken wire]] [[grayship]] using a dense wave front by [[Hartmut Holzwart]].
* '''June 2''': [[Keith Amling]], [[Matthias Merzenich]] and [[Hartmut Holzwart]] collaborate to complete a [https://conwaylife.com/forums/viewtopic.php?p=146504#p146504 new greyship front edge], allowing for rectangular and trapezoidal [[greyship]]s that mix different widths of [[chicken wire]] with a minimum width of 13.
* '''May 28''': [[Charity Engine]] [https://conwaylife.com/forums/viewtopic.php?p=146196#p146196 discovers] [[meatball]], a small {{period|7}} [[spark]]-producing [[oscillator]] which can be used in place of [[38P7.2]] in certain [[glider gun]] constructions.
* '''May 27''': [[Pavel Grankovskiy]] [https://conwaylife.com/forums/viewtopic.php?p=146111#p146111 completes another stage] of a 16G [[RCT]] implementation, moving the project gradually away from "<i>we know vaguely how it would work</i>" toward "<i>we know exactly how it works</i>".
* '''May 25-June 2''': [[Charity Engine]]'s continuing focus on non-C1 [[symmetry]] produces [https://conwaylife.com/forums/viewtopic.php?p=145987#p145987 several] [https://conwaylife.com/forums/viewtopic.php?p=146482#p146482 more] new p9 and p6 oscillators.
* '''May 18''': [[Charity Engine]] [https://conwaylife.com/forums/viewtopic.php?p=145728#p145728 discovers] [[30P25]], the smallest known {{period|25}} [[oscillator]] by population.
* '''May 10''': [[mvr]] [https://conwaylife.com/forums/viewtopic.php?p=145411#p145411 discovers] a [[p84 honey farm hassler]] with only 42 cells, the smallest known period-84 oscillator by population.
* '''May 10''': A [https://conwaylife.com/forums/viewtopic.php?p=145414#p145414 modification] of the CatForce search program by [[mvr]] allows for a significant speedup -- and also includes a symmetric search option that has very quickly started finding interesting new circuitry, such as a new [[Spartan]] [https://conwaylife.com/forums/viewtopic.php?p=145440#p145440 version of a known pi-to-2G converter].
* '''May 10''': [[iNoMed]] [https://conwaylife.com/forums/viewtopic.php?p=145359#p145359 posts] reductions to two different oscillators: the p12 [[crown]], and the [[p44 pi-heptomino hassler]].
* '''May 2''': [[Keith Amling]] [https://conwaylife.com/forums/viewtopic.php?p=144986#p144986 constructs] [[quartermax]], a [[quadratic-growth]] pattern that fills one quarter of the plane (instead of a half or full plane, as in [[halfmax]] and [[max]].)
* '''May 2''': [[iNoMed]] [https://conwaylife.com/forums/viewtopic.php?p=144982#p144982 discovers] a new period-46 [[glider gun]] that does not rely on previously known [[:Category:Oscillators with period 46|p46 oscillators]] or on [[adjustable glider loop]]s.
* '''April 28''': [[wwei23]] [https://conwaylife.com/forums/viewtopic.php?p=144828#p144828 discovers] a record-breaking smallest p12 [[backrake]] using "WSS_Test", the modified [[apgsearch]] program that also found [[35P12H6V0]] (the record-breaking smallest p12 spaceship from February).
* '''April 27''': [[Ilkka Törmä]] and [[Ville Salo]] [https://conwaylife.com/forums/viewtopic.php?p=144795#p144795 find] a "self-forcing" finite patch of period-2 [[agar]], and Oscar Cunningham stabilizes the patch to produce the first oscillator with a provably unsynthesizable [[rotor]].
* '''April 25''': [[Andrew Wade]] uses his life slice spaceship search program ([[LSSS]]) to find a [https://conwaylife.com/forums/viewtopic.php?p=144727#p144727 new 151-cell 2c/7 spaceship], and May13 [https://conwaylife.com/forums/viewtopic.php?p=144728#p144728 produces] a number of variations based on it and known 2c/7 components.
* '''April 21''': [[dani]], [[Oscar Cunningham]], [[Adam P. Goucher]] and [[Pavel Grankovskiy]] [https://conwaylife.com/forums/viewtopic.php?p=144536#p144536 collaborate] to reduce the number of gliders needed for any glider construction (via an [[RCT]] synthesis) from 17 to 16.
* '''April 20''': [[David Raucci]] [https://conwaylife.com/forums/viewtopic.php?f=2&t=3552&start=400#p144490 finds] a new [https://catagolue.hatsya.com/object/gun_114/b3s23 period-114 glider gun] engine using two [[pi-heptomino]]es and four period-6 [[sparker]]s.
* '''April 16''': [[Adam P. Goucher]] [https://conwaylife.com/forums/viewtopic.php?p=144315#p144315 posts] an example pattern demonstrating the [[reverse caber-tosser]] mechanism by constructing a [[shillelagh]], along with a massive amount of debris, in approximately 5.23&times;10<sup>615</sup> generations.
* '''April 15''': [[Goldtiger997]] makes available a [https://conwaylife.com/forums/viewtopic.php?p=144242#p144242 Python script] that can assemble a [[Speed Orthogonoid]] for any rational orthogonal velocity below c/2 (with the usual practical limitations due to system resources).
* '''April 12''': [[iNoMed]] and [[David Raucci]] [https://conwaylife.com/forums/viewtopic.php?p=144139#p144139 assemble] a new-record smallest [[period-36 glider gun]] using just one engine (the previous record-holder used two).
* '''April 11''': [[Charity Engine]] [https://conwaylife.com/forums/viewtopic.php?p=144121#p144121 discovers] a symmetric [[soup]] via [[apgsearch]] exhibiting [[infinite growth]] whose center takes 225,593,194 generations to stabilize, [[Methuselah#Infinite growth|a new record]].
* '''April 11-14''': [[Pavel Grankovskiy]] [https://conwaylife.com/forums/viewtopic.php?p=144077#p144077 completes] a [[diehard]] with a size similar to previous efforts, that takes '''much''' longer to die out completely -- initially on the rough order of <sup>8</sup>121 ticks, the eighth [https://en.wikipedia.org/wiki/Tetration tetration] of 121, and  improved past <sup>12</sup>121 ticks in the next few days.
* '''April 7-10''': [[Pavel Grankovskiy]] [https://conwaylife.com/forums/viewtopic.php?p=144045#p144045 constructs] a [[diehard]] fitting within a 10,000-cell bounding box while having an exponentially long lifespan using a [[sawtooth]] design. With optimizations by [[toroidalet]], [[Dean Hickerson]], and others, this pattern lasts for ~1.33616&times;10<sup>1443</sup> generations before disappearing.
* '''April 6''': [[Goldtiger997]]'s [[self-synthesizing oblique loopship]] [https://conwaylife.com/forums/viewtopic.php?p=143872#p143872 wins] the [[Pattern of the Year]] competition for 2021.
* '''April 4''': [[dani]] [https://conwaylife.com/forums/viewtopic.php?p=143798#p143798 finds] a [[20-cell quadratic growth]] pattern, the current record holder for the smallest [[breeder]] in terms of population.
* '''April 2''': [[Charity Engine]] [https://conwaylife.com/forums/viewtopic.php?p=143703#p143703 discovers] a pair of [[44P5H2V0]]s via a symmetric [[soup search]], making it the first {{periodS|5}} [[spaceship]] to occur [[semi-natural]]ly. [[iNoMed]] and [[Goldtiger997]] use this soup to [https://conwaylife.com/forums/viewtopic.php?p=143704#p143704 reduce] the 44P5H2V0 [[glider synthesis]].
* '''April 1-8''': [[Goldtiger997]] [https://conwaylife.com/forums/viewtopic.php?p=143667#p143667 completes] two [[Speed Orthogonoid]] spaceships, which can be adjusted to travel arbitrarily close to the orthogonal speed limit of c/2, similar to the [[Speed Demonoid]]'s adjustability for diagonal speeds arbitrarily close to c/4.
* '''March 31''': A [https://conwaylife.com/forums/viewtopic.php?f=2&t=5616 forum thread] dedicated to [[diehard]]s, including engineered ones, is created, leading to the publication of constructions by [[Dean Hickerson]] and [[Pavel Grankovskiy]] fitting within small bounding boxes but lasting for [https://conwaylife.com/forums/viewtopic.php?p=143574#p143574 tens of thousands] (and even [https://conwaylife.com/forums/viewtopic.php?p=143605#p143605 hundreds of thousands]) of generations before disappearing completely.
* '''March 28''': [[Keith Amling]] [https://conwaylife.com/forums/viewtopic.php?p=143452#p143452 discovers] a c/2 orthogonal [[wickstretcher|stretcher]] for a stable wick.
* '''March 27''': [[dani]] [https://conwaylife.com/forums/viewtopic.php?p=143450#p143450 finds] a 6-[[glider]] [[glider synthesis|synthesis]] of a [[breeder]], breaking the previous record of [[Switch engine ping pong|7 gliders]].
* '''March 23-27''': [[Rocknlol]] [https://conwaylife.com/forums/viewtopic.php?p=143277#p143277 finds] a 23&times;15 predecessor to a [[breeder]], beating out [[Luka Okanishi]]'s recent 26&times;18 pattern for the title of the smallest quadratic growth predecessor by [[bounding box]]. A few days later, this predecessor is further reduced to 23&times;13.
* '''March 22-23''': [[Adam P. Goucher]] [https://conwaylife.com/forums/viewtopic.php?p=143253#p143253 posts] a series of binary slow salvo recipes for the 17-glider [[reverse caber tosser]] that greatly simplify the problem of producing a complete proof-of-concept of RCT construction... not that it's all done yet!
* '''March 17''': New forum user 'Game of Life Fun' [https://conwaylife.com/forums/viewtopic.php?p=143050#p143050 assembles] the first [[gliderless]] [[Gosper glider gun]] [[puffer]].
* '''March 12-15''': [[dani]] [https://conwaylife.com/forums/viewtopic.php?p=142708#p142708 finds] a small [[c/12 diagonal]] [[breeder]] using a custom [[apgsearch]] symmetry, with a 26&times;18 predecessor [https://conwaylife.com/forums/viewtopic.php?p=142715#p142715 found] by [[Luka Okanishi]] and [[22-cell quadratic growth|a 22-cell predecessor]] [https://conwaylife.com/forums/viewtopic.php?p=142738#p142738 found] by [[David Raucci]] breaking the records for the smallest [[bounding box]] and [[population]], respectively, of a pattern exhibiting [[quadratic growth]]. Three days later, [[dani]] [https://conwaylife.com/forums/viewtopic.php?p=142905#p142905 finds] a [[21-cell quadratic growth|21-cell solution]] with a different breeder.
* '''March 11''': [[Nathaniel Johnston]] [https://conwaylife.com/forums/viewtopic.php?p=142667#p142667 announces] the official launch of the textbook ''[[Conway's Game of Life: Mathematics and Construction]]''.
* '''March 8''': [[Goldtiger997]] [https://conwaylife.com/forums/viewtopic.php?p=142538#p142538 posts] an SSGRL ([[self-synthesizing glide-reflecting loopship]]) with a design similar to last year's [[self-synthesizing oblique loopship]].
* '''March 4''': [[Charity Engine]] [https://conwaylife.com/forums/viewtopic.php?p=142429#p142429 discovers] a pair of [[dart]]s via a symmetric [[soup search]], making it the first {{periodS|3}} [[spaceship]] to occur [[semi-natural]]ly.
* '''March 4''': [[iNoMed]] [https://conwaylife.com/forums/viewtopic.php?p=142407#p142407 discovers] [[30P3]], a custom-built {{period|3}} [[sparker]] which can be used to construct a record-breaking 51-cell p48 oscillator when combined with [[Rob's p16]].
* '''March 1''': [[iNoMed]] and [[David Raucci]] [https://conwaylife.com/forums/viewtopic.php?p=142297#p142297 discover] the first p30 gun that does not use the [[queen bee shuttle]].
* '''February 24''': [[Charity Engine]] [https://conwaylife.com/forums/viewtopic.php?p=142084#p142084 discovers] [[58P8H4V0]] via a symmetric [[soup search]], making it the first {{periodS|8}} [[spaceship]] to occur [[semi-natural]]ly.
* '''February 23''': [[Keith Amling]] [https://conwaylife.com/forums/viewtopic.php?p=142060#p142060 discovers] [[232P7H3V0]], the smallest known [[3c/7 orthogonal]] [[spaceship]].
* '''February 21''': [[Charity Engine]] [https://conwaylife.com/forums/viewtopic.php?p=141951#p141951 discovers] a symmetric [[soup]] which takes [[Die hard|2,474 generations to die out completely]], beating the previous "messless [[methuselah]]" record by over 400 ticks.
* '''February 16''': [[James Pascua]] [https://conwaylife.com/forums/viewtopic.php?p=141729#p141729 discovers] the [[p23 honey farm hassler]], a smaller {{period|23}} [[oscillator]].
* '''February 15''': dani [https://conwaylife.com/forums/viewtopic.php?p=141656#p141656 discovers] a new [[period-30 glider gun]] that uses only a single [[queen bee shuttle]] based on a symmetric 4-[[barrel]]ed gun [https://conwaylife.com/forums/viewtopic.php?p=141655#p141655 discovered] by [[Charity Engine]].
* '''February 14''': [[James Pascua]] [https://conwaylife.com/forums/viewtopic.php?p=141620#p141620 discovers] [[p4-assisted period-28 glider gun|a smaller p28 glider gun]], with a [[bounding box]] of only 37&times;24, which [[iNoMed]] uses to [https://conwaylife.com/forums/viewtopic.php?p=141628#p141628 construct] a smaller [[period-14 glider gun|pseudo-p14 glider gun]].
* '''February 13''': [[James Pascua]] [https://conwaylife.com/forums/viewtopic.php?p=141608#p141608 discovers] a smaller {{period|62}} [[glider gun]] based on a glider-releasing [[wick]].
* '''February 12''': [[Charity Engine]] [https://conwaylife.com/forums/viewtopic.php?p=141568#p141568 discovers] a symmetric [[soup]] containing a [[bi-gun]], making it the second unique [[gun]] to have occurred [[semi-natural]]ly.
* '''February 11''': [[Charity Engine]] [https://conwaylife.com/forums/viewtopic.php?p=141492#p141492 discovers] [[32P21]], the smallest known {{period|21}} [[oscillator]].
* '''February 10''': On Discord, "mystical" [https://discord.com/channels/357922255553953794/370571014654001154/941302038409674752 uses a modification of apgsearch] to find a period-12 spaceship, [[35P12H6V0]], with a minimum population four cells less than that of the [[Schick engine]], which had been the smallest known period-12 spaceship for about half a century.
* '''January 29''': [[David Raucci]] makes the [https://www.conwaylife.com/w/index.php?title=RLE:Period27glidergun&oldid=100000 100,000th edit] to LifeWiki.
* '''January 29''': [[David Raucci]] [https://conwaylife.com/forums/viewtopic.php?p=140915#p140915 completes] a [[true]]-period [[period-27 glider gun]] based on a reaction found by [[goldenratio]].
* '''January 26''': [[Goldtiger997]] [https://www.conwaylife.com/forums/viewtopic.php?p=140777#p140777 finds] a synthesis of another [[2c/5]] [[spaceship]], [[70P5H2V0]], based on a final step [https://www.conwaylife.com/forums/viewtopic.php?p=140650#p140650 completed on January 23rd].
* '''January 17''': [[goldenratio]] and [[iNoMed]] [https://www.conwaylife.com/forums/viewtopic.php?p=140411#p140411 discover] the [[p39 pi-heptomino hassler]], the first {{period|39}} [[oscillator]] not based on an [[LCM]] or glider loop mechanism.
* '''January 13''': [[Ilkka Törmä]] and [[Ville Salo]] [https://www.conwaylife.com/forums/viewtopic.php?p=140258#p140258 solve] the [[unique father problem]] in the positive, providing a 32&times;26 [[still life]] that cannot be constructed from scratch by any means.
* '''January 12''': [[David Raucci]] [https://www.conwaylife.com/forums/viewtopic.php?p=140183#p140183 discovers] [[44P38]], the first {{period|38}} [[oscillator]].
* '''January 11''': [[Martin Grant]] [https://www.conwaylife.com/forums/viewtopic.php?p=140089#p140089 constructs] the first [[pseudo-period]] 16 and 17 [[LWSS]] and [[MWSS]] [[gun]]s. Period 16 is the minimum possible period for a MWSS gun.
* '''January 10''': [[James Pascua]] [https://www.conwaylife.com/forums/viewtopic.php?p=140094#p140094 reduces] the [[period-48 glider gun]] to a bounding box of 31&times;16 - beating [[Three quarters traffic light catalyst|period 46]] for the title of second-smallest known [[glider gun]]. As a corollary, the [https://www.conwaylife.com/forums/viewtopic.php?p=140108#p140108 smallest known] period-96 [[oscillator]] now consists of a p48 gun with a [[boat-bit]].
* '''January 10''': [[Goldtiger997]] [https://www.conwaylife.com/forums/viewtopic.php?p=140063#p140063 completes] a 74-glider synthesis of [[Orion 2]], making it the fifth [[c/4 diagonal]] spaceship (not including the glider!) with a known synthesis.
* '''January 6''': [[Ilkka Törmä]] and [[Ville Salo]] [https://www.conwaylife.com/forums/viewtopic.php?p=139854#p139854 solve] a generalized version of the [[grandfather problem]], proving that for every natural number n, there exists a pattern that has an n-tick predecessor but not an (n+1)-tick predecessor.
* '''January 4''': [[iNoMed]] [https://www.conwaylife.com/forums/viewtopic.php?p=139761#p139761 further reduces] the [[p32 honey farm hassler]] to only 45 cells.
* '''January 3''': [[iNoMed]] [https://www.conwaylife.com/forums/viewtopic.php?p=139701#p139701 discovers] a smaller [[p143 Bandersnatch loop]], using only relatively small [[still life]]s, and later [https://www.conwaylife.com/forums/viewtopic.php?p=139714#p139714 constructs] a 58-glider [[synthesis]] of it.
 
==2021==
* '''December 31''': [[Ilkka Törmä]] finds (and [https://www.conwaylife.com/forums/viewtopic.php?p=139666#p139666 posts a few days later]) a 6x3 [[still-life]]-compatible region that can be extended into an infinite [[agar]] that has no predecessors other than itself.
* '''December 21''': [[goldenratio]], [[iNoMed]], and [[praosylen]] [https://www.conwaylife.com/forums/viewtopic.php?p=139175#p139175 construct] a smaller [[period-48 glider gun]], with a bounding box of 35&times;16, the third-smallest of any known unique-period gun.
* '''December 19''': [[Tanner Jacobi]] [https://www.conwaylife.com/forums/viewtopic.php?p=139044#p139044 completes] a small period-126 glider gun using a [[pi]]-[[hassle|hassling]] mechanism, based on contributions by [[David Raucci]], [[iNoMed]], and [[cvojan]].
* '''December 17''': [[Pavel Grankovskiy]] [https://www.conwaylife.com/forums/viewtopic.php?p=138965#p138965 completes] a blueprint laid out by googleplex, to produce a [[QuickSilver Demonoid|QuickSilver self-constructing spaceship]] made with entirely 1990s-era technology such as [[Silver's reflector]]s (but definitely 21st-century design techniques).
* '''December 14–21''': [[cvojan]] [https://www.conwaylife.com/forums/viewtopic.php?p=138895#p138895 discovers] the [[traffic stop|three quarters traffic light catalyst]], resulting in [[hassler]]s of periods 36, 48, and 60. Later, cvojan [https://www.conwaylife.com/forums/viewtopic.php?p=139008#p139008 constructs] a smaller [[p76 pi-heptomino hassler]], with only 57 cells, using this hassling reaction as a [[catalyst]], while [[iNoMed]] [https://www.conwaylife.com/forums/viewtopic.php?p=139147#p139147 constructs] a smaller [[period-46 glider gun]] with a [[bounding box]] of 37&times;15, the second-smallest of any known gun.
* '''December 11''': [[David Raucci]] [https://www.conwaylife.com/forums/viewtopic.php?p=138670#p138670 assembles] a [[bouncer]] with repeat time 22 and period 11, a previously unknown period for bouncers (though it was known for [[bumper]]s).
* '''December 10''': [[FractalFusion]] [https://www.conwaylife.com/forums/viewtopic.php?p=138634#p138634 constructs] [[statorless]] [[oscillator]]s for all periods that are multiples of 33.
* '''November 29''': [[Pavel Grankovskiy]] [https://www.conwaylife.com/forums/viewtopic.php?p=138191#p138191 completes] "DOGun SaGaQR", a "shapeshifting" pattern that can be adjusted to become a [[diehard]], high-period [[Volatility#Oscillators_with_volatility_1|volatility 1 oscillator]], 4-[[barrel]]led glider [[gun]], c/24 [[spaceship]], single [[glider]], or [[quadratic growth]] [[replicator]].
* '''November 28''': [[Luka Okanishi]] and [[Tanner Jacobi]] construct the first [[true-period]] [[glider gun]]s of periods [https://www.conwaylife.com/forums/viewtopic.php?p=138155#p138155 51] and [https://www.conwaylife.com/forums/viewtopic.php?p=138157#p138157 49] respectively using [[hotcrystal0_reaction|a base reaction]] by [[wwei23]] and [[hotcrystal0]].
* '''November 23–24''': [[Martin Grant]], [[Tanner Jacobi]], and [[Matthias Merzenich]] [https://www.conwaylife.com/forums/viewtopic.php?p=138057#p138057 complete] a period-20 partial found by [[David Raucci]] to construct a record-breaking [[period-20 glider gun]].
* '''November 20''': [[Dongook Lee]] [https://www.conwaylife.com/forums/viewtopic.php?p=137874#p137874 finds] [[62P7]], a new period-7 [[domino]] [[sparker]] that's more accessible than [[132P7]], stronger than [[hebdarole]], and '''much''' smaller than [[754P7]] (which itself can be reduced to 678 cells with this same discovery).
* '''November 18''': [[Dongook Lee]] [https://www.conwaylife.com/forums/viewtopic.php?p=137807#p137807 discovers] the first [[strictly volatile p4]] oscillator.
* '''November 17''': [[Rocknlol]] [https://www.conwaylife.com/forums/viewtopic.php?p=137788#p137788 discovers] several new [[Max]] predecessors using [[LogicLifeSearch]] including, among others, one with only 151 cells and another with a [[bounding box]] of only 25&times;21, making them the smallest known [[spacefiller]]s by these metrics.
* '''November 17''': [[May13]] [https://www.conwaylife.com/forums/viewtopic.php?p=137751#p137751 constructs] the first clean c/6 orthogonal [[rake]] using 8 copies of a dirty p1212 puffer, and [[iNoMed]] quickly [https://www.conwaylife.com/forums/viewtopic.php?p=137752#p137752 reduces] this to 4 copies.
* '''November 13''': Using the new [[weekender]] recipe, [[Goldtiger997]] and [[Dave Greene]] [https://conwaylife.com/forums/viewtopic.php?p=137616#p137616 complete] a glider-to-weekender converter less than a quarter of the size of the previous mechanism, with an option to produce [[doo-dah]] spaceships instead.
* '''November 13''': [[Luka Okanishi]] [https://www.conwaylife.com/forums/viewtopic.php?p=137600#p137600 assembles] a working [[elementary]] Herschel merge circuit.
* '''November 13''': With population optimization help from [[Entity Valkyrie]], [[Dongook Lee]] [https://conwaylife.com/forums/viewtopic.php?p=137595#p137595 finds] [[180P8]], a very high-[[clearance]] [[domino]] sparker that is a significant reduction to the previously known [[230P8]].
* '''November 10''': [[iNoMed]] [https://www.conwaylife.com/forums/viewtopic.php?p=137484#p137484 announces] yet another size reduction for the [[period-144 glider gun]] using a [[transparent]]-[[blinker]] [[component]].
* '''October 22''': [[MathAndCode]] [https://www.conwaylife.com/forums/viewtopic.php?p=136897#p136897 discovers] a [[phase shift]] reaction for [[50P9]] with period 9n-1.
* '''October 21''': Various users [https://www.conwaylife.com/forums/viewtopic.php?p=136864#p136864 discover] new [[p3 pipsquirter]]s which can be used to support the [[carnival shuttle]].
* '''October 13''': [[Goldtiger997]] [https://conwaylife.com/forums/viewtopic.php?p=136580#p136580 completes] a Python script capable of assembling the Nth [[Canada Grey]] [[greyship]] for N>2, at a cost of 84N<sup>2</sup> + 371.5N + 204 - 43.5*MOD(N,2) [[glider]]s.
* '''October 12''': [[83bismuth38]] [https://www.conwaylife.com/forums/viewtopic.php?p=136555#p136555 discovers] [[66P62]], the smallest known {{period|62}} [[oscillator]].
* '''October 11''': [[Nicolas Loizeau]] ('Coban' on the forums) posts a [https://www.conwaylife.com/forums/viewtopic.php?p=136626#p136536 new scalable programmable 8-bit computer] (and accompanying video).
* '''September 23''': The textbook ''[[Conway's Game of Life: Mathematics and Construction]]'' by [[Nathaniel Johnston]] and [[Dave Greene]] is opened up to beta readers, available as a PDF at https://conwaylife.com/book/. Feedback can be submitted in [https://www.conwaylife.com/forums/viewtopic.php?f=7&t=5418 this thread].
* '''September 19''': [[Rocknlol]] [https://www.conwaylife.com/forums/viewtopic.php?p=135872#p135872 finds] new record-breaking small 'pure nonfillers', one with 209 ON cells and one with a 33-by-27 bounding box.
* '''September 17''': [[Dongook Lee]] and others, in a [https://discord.com/channels/357922255553953794/370571014654001154/888333616952770560 Discord discussion], improve the [[period-55 glider gun]] with new customized p5 sparkers, making it the second-smallest odd-period gun after the [[period-21 glider gun]] by minimum population, and the outright smallest by bounding box.
* '''September 16''': [[David Raucci]] completes a new and significantly smaller [[true]] period [[period-54 glider gun]], with improvements based on a [https://discord.com/channels/357922255553953794/370571014654001154/888137152616083506 Discord collaboration].
* '''September 14''': [[David Raucci]] [https://www.conwaylife.com/forums/viewtopic.php?p=135748#p135748 discovers] a smaller [[true-period]]-32 [[glider gun]] based on a new engine.
* '''September 9''': [[David Raucci]] and [[Aidan F. Pierce]] [https://www.conwaylife.com/forums/viewtopic.php?p=135635#p135635 discover] the [[p32 honey farm hassler]], the smallest known {{period|32}} [[oscillator]], and [[Matthias Merzenich]] uses the underlying reaction to [https://www.conwaylife.com/forums/viewtopic.php?p=135636#p135636 construct] the first [[true-period]]-32 [[glider gun]].
* '''August 29-September 6''': iNoMed and others, in a [https://discord.com/channels/357922255553953794/370571014654001154/881531301772029973 Discord discussion], radically improve the glider synthesis of the [[weekender]] from 56 gliders down to only 33, and reducing the [[repeat time]] from 444 [[tick]]s to 347 for a related 35-glider version (for 33G it's 427 ticks, and for 34G it's 447 ticks), making it one of the few known [[spaceship]]s besides the [[*WSS]]es that cost less than one glider per bit to synthesize.
* '''August 24''': Matthias Merzenich [https://www.conwaylife.com/forums/viewtopic.php?p=135235#p135235 constructs] a period-18 reflector capable of reflecting a period-18 glider stream based on an oscillator by [[David Raucci]].
* '''August 24''': [[Catagolue]] is updated to allow larger tabulations in the form of linked fragments, [https://discord.com/channels/357922255553953794/420789213466853387/879876922014851152 enabling] among other things storage of all xs21s (still lifes consisting of 21 bits).
* '''August 23''': Matthias Merzenich [https://www.conwaylife.com/forums/viewtopic.php?p=135199#p135199 constructs] a new period-45 glider [[gun]] based on a partial result by David Raucci.
* '''August 21''': [[Goldtiger997]] [https://conwaylife.com/forums/viewtopic.php?p=135135#p135135 re-uses SMOS technology] to build a [[RRO|reflectorless rotating oscillator]] with loopability 1, 2, 3, 4, and 6; with minor adjustments it can reach loopability 7, 10, or 11 (but not 8, 9, or 12 or higher).
* '''August 2''': [[Goldtiger997]] [https://www.conwaylife.com/forums/viewtopic.php?p=134389#p134389 constructs] the first explicit example of a [[SMOS|spaceship made of spaceships]] in Conway's Game of Life.
* '''August 1''': [[Tanner Jacobi]] [https://discordapp.com/channels/357922255553953794/370571014654001154/871483361435209748 constructs] the first [[true]]-period [[Period-21_glider_gun|period-21 gun]] using a new period-21 oscillator by [[David Raucci]].
* '''July 30''': [[Martin Grant]] [https://www.conwaylife.com/forums/viewtopic.php?t=&p=134269#p134269 constructs] a [[T-nosed p7]] using a reaction from 2016.
* '''July 25''': [[Goldtiger997]] published the [https://www.conwaylife.com/forums/viewtopic.php?p=134059#p134059 detailed recipes] needed to synthesize an infinite family of increasingly larger greyships.
* '''July 12''': [[James Pascua]] and [[Matthias Merzenich]] [https://www.conwaylife.com/forums/viewtopic.php?p=133473#p133473 discover] [[90P51]], a two-cell reduction to the smallest known non-trivial p51 oscillator.
* '''July 9''': [[iNoMed]] [https://www.conwaylife.com/forums/viewtopic.php?p=133286#p133286 discovers] an 83-cell variant of the [[p25 pre-pulsar shuttle]], making it the smallest known period-25 [[oscillator]].
* '''July 6''': [[David Raucci]] [https://www.conwaylife.com/forums/viewtopic.php?p=133141#p133141 discovers] a new glider gun engine with [[period-117 glider gun|period 117]].
* '''July 1''': [[Martin Grant]] and Goldtiger997 [https://conwaylife.com/forums/viewtopic.php?p=132872#p132872 complete] the synthesis of the [[greyship]] from June 20th in 753 gliders.
* '''June 20''': Goldtiger997 [https://www.conwaylife.com/forums/viewtopic.php?f=2&t=1557&p=132334#p132334 completes] the final step of a [[greyship]] [[glider synthesis]].
* '''June 18''': Adam P. Goucher [https://discord.com/channels/357922255553953794/370571014654001154/85543598338631273434 adds] to [[Catagolue]] the ability to recognize glider guns with up to four-digit periods, which can now be submitted to the collection via the nonmagical box at the bottom of the "Syntheses" page.
* '''May 17''': Matthias Merzenich [https://www.conwaylife.com/forums/viewtopic.php?p=130340#p130340 constructs] a new [[period-20 glider gun]] based on a period-20 oscillator by [[wwei23]] and [[David Raucci]].
* '''May 14-21''': Frank Everdij discovers [https://www.conwaylife.com/forums/viewtopic.php?p=130230#p130230 two] [https://www.conwaylife.com/forums/viewtopic.php?p=130622#p130622 new] elementary [[c/6 diagonal]] spaceships using [[ikpx2]].
* '''May 9''': Adam P. Goucher [https://www.conwaylife.com/forums/viewtopic.php?p=129942#p129942 constructs] period-12 knightpuffer and knightrake technology using variants of the new [[sprayer]] [[knightship]]; this is quickly followed by other puffer and rake periods such as a [https://www.conwaylife.com/forums/viewtopic.php?p=129945#p129945 p48 mechanism] by cvojan.
* '''May 9''': After a three-month, 16-thread [[ikpx2]] search, Adam P. Goucher [https://www.conwaylife.com/forums/viewtopic.php?p=129937#p129937 finds] a completion for a second [[elementary]] [[knightship]] front end found by [[Dylan Chen]], which is known as the [[sprayer]] due to a huge accessible side spark at the front.
* '''April 13 - June 30''': [[David Raucci]] discovers many previously unseen oscillators, glider gun mechanisms, etc., including [[Raucci's p74]], using a [https://conwaylife.com/forums/viewtopic.php?p=130212#p130212 new search script] that finds spark support for hassling common active objects in various symmetries.
* ''' April 11''': David Raucci [https://www.conwaylife.com/forums/viewtopic.php?p=128061#p128061 finds] a new [[p76 pi-heptomino hassler]] oscillator, which is quickly [https://www.conwaylife.com/forums/viewtopic.php?p=128083#p128083 reduced to a monomer form] by JP21, A for awesome, and [[Matthias Merzenich]].
* ''' April 10-14''': [[Goldtiger997]] [https://www.conwaylife.com/forums/viewtopic.php?p=128012#p128012 completes] a 152-glider synthesis of a third c/4 orthogonal spaceship, [https://catagolue.hatsya.com/object/xq4_y2oo7t0t7ooz2qgx8t2rgr2t8xgq2z122166y5661221/b3s23 61P4H1V0.1]; within four days this was reduced to an [http://catagolue.appspot.com/object?apgcode=xq4_y2oo7t0t7ooz2qgx8t2rgr2t8xgq2z122166y5661221&rule=b3s23 89-glider synthesis].
* ''' March 19''': Matthias Merzenich [https://www.conwaylife.com/forums/viewtopic.php?p=126154#p126154 discovers] a new [[weekender]] tagalong.
* ''' March 18''': Results for the 2020 [[Pattern of the Year]] competition include a tie for first place between the [[Bandersnatch]] and the [[Speed Demonoid]].
* ''' March 17''': A small synthesis efficiency improvement project, [https://www.conwaylife.com/forums/viewtopic.php?p=125927#p125927 12-in-7] (12-bit still lifes constructed with 7 gliders or less) is completed, with 13 expensive syntheses reduced to below the target cost in less than a week.
* ''' March 17''': [https://conwaylife.com/forums/viewtopic.php?f=2&t=5066 Pattern of the Year voting], on a record-breaking thirty-nine entries for 2020, will close on March 17th.
* '''March 12''': The 20-bit [[still life]] [[glider synthesis]] [https://catagolue.hatsya.com/census/b3s23/synthesis-costs/xs20 project] is [https://www.conwaylife.com/forums/viewtopic.php?p=125259#p125259 completed].
* '''March 7-8''': [[Goldtiger997]] [https://www.conwaylife.com/forums/viewtopic.php?p=124810#p124810 completes] a 215-glider recipe for [https://catagolue.hatsya.com/object/xq4_2534uof1u0u1fou4352zy087084048078zx3igi3x3igi3/b3s23 72P4H1V0], the second c/4 orthogonal spaceship to be synthesized.
* '''February 10-11''': [[Chris Rowett]] uses [[ikpx2]] to discover several new moving objects, including a [https://conwaylife.com/forums/viewtopic.php?p=122299#p122299 p120 2c/5 puffer] and [https://conwaylife.com/forums/viewtopic.php?p=122454#p122454 c/5 diagonal tubstretcher, tagalong, and spaceship].
* '''February 4-11''':  [[Tanner Jacobi]], EvinZL, [[Louis-François Handfield]] and [[Sphenocorona]] [https://conwaylife.com/forums/viewtopic.php?p=121723#p121723 find] new Herschel-to-glider [[converter]]s and variants of existing H-to-Gs: NW26T157b, NE30T17_NE1T22, NW10T137, SW-18T136 and a [[Spartan]] SE16T36b.
* '''January 11-March 8''': [[Hartmut Holzwart]] [https://conwaylife.com/forums/viewtopic.php?p=121698#p121698 completes] [https://conwaylife.com/forums/viewtopic.php?p=121889#p121889 several] new [[chicken wire]] [[greyship]]s with different widths of chicken wire, with specific examples constructed for widths 2 through 12 among others.
* '''January 25''': [[Catagolue]]'s [[B3/S23]]/[[C1]] census [https://catagolue.hatsya.com/census/b3s23/C1-2021-01-25 reaches] a total of one quadrillion objects.
* '''January 24''': [[goldenratio]] and [[bubblegum]] [https://www.conwaylife.com/forums/viewtopic.php?p=120269#p120269 construct] a [[glider synthesis]] for [[edge-repair spaceship 1]].
* '''January 17''': [[wwei23]] [https://www.conwaylife.com/forums/viewtopic.php?p=119411#p119411 discovers] [[1320P7]], a large but high-clearance {{period|7}} [[sparker]] [[oscillator]].
* '''January 16''': [[Dylan Chen]] [https://www.conwaylife.com/forums/viewtopic.php?p=119406#p119406 discovers] [[52513M]], the new longest-lasting known [[methuselah]] within a 16&times;16 [[bounding box]], just a week after the discovery of 50093M.
* '''January 16''': [[Adam P. Goucher]] [https://conwaylife.com/forums/viewtopic.php?f=2&p=119342#p119342 completes] a [[2c/5 orthogonal|2c/5]] [[waveguide]] for an oblique line of [[ants]] based on a partial result by [[Matthias Merzenich]].
* '''January 10''': [[Alex Greason]] [https://conwaylife.com/forums/viewtopic.php?p=118703#p118703 makes available] a fresh set of transfer.py results.  Fewer than 535 20-bit still lifes have no known glider synthesis, and 135 of these have soups available on [[Catagolue]] to assist with synthesis.
* '''January 10''': [[Dylan Chen]] [https://www.conwaylife.com/forums/viewtopic.php?p=118727#p118727 discovers] another new [[3c/7]] spaceship, using [[Andrew J. Wade]]'s December update to [[LSSS]].  This is the first small 3c/7 spaceship with [[gutter symmetry]].
* '''January 9''': [[Rob Liston]] [https://www.conwaylife.com/forums/viewtopic.php?p=118690#p118690 discovers] [[50093M]], the longest-lasting known [[methuselah]] within a 16&times;16 [[bounding box]], using [[apgsearch]].
* '''January 5''': [[Bullet51]] [https://www.conwaylife.com/forums/viewtopic.php?p=118256#p118256 uses ikpx2 to find] a third [[elementary]] [[c/6 diagonal]] [[spaceship]].
* '''January 5''': [[Martin Grant]] [https://www.conwaylife.com/forums/viewtopic.php?p=118240#p118240 discovers] a new variant of a known [[H-to-G]] [[conduit]], NE16T14, with likely applications as a [[reflector]] and merge circuit in [[single-channel]] self-constructing circuitry.
* '''January 5''': [[Sphenocorona]] and [[Luka Okanishi]] assemble a new elementary conduit, [https://www.conwaylife.com/forums/viewtopic.php?p=118100#p118100 HF96P], which allows for the creation of several new Herschel-to-glider [[converter]]s.
* '''January 2-3''': bubblegum [https://www.conwaylife.com/forums/viewtopic.php?f=2&p=117681#p117681 discovers] a new 3c/7 orthogonal [[Puffer#Puffer_engine|puffer engine]], allowing [[Matthias Merzenich]] and iNoMed to [https://www.conwaylife.com/forums/viewtopic.php?f=2&p=117798#p117798 construct] the first clean 3c/7 [[rake]].
 
==2020==
* '''December 28-31''': [[Dylan Chen]] discovers [[Anura]] ([https://www.conwaylife.com/forums/viewtopic.php?p=117159#p117159]) and [[Soba]] ([https://www.conwaylife.com/forums/viewtopic.php?t=&p=117548#p117548]), the two smallest known [[3c/7 orthogonal]] spaceships, as stabilizations of the same frontend, and also a much smaller front end for the [[spaghetti monster]] on January 4.([https://www.conwaylife.com/forums/viewtopic.php?t=&p=118021#p118021])
* '''December 28''': ''The New York Times'' [https://www.nytimes.com/2020/12/28/science/math-conway-game-of-life.html publishes an article] reflecting on 50 years of Conway's Game of Life.
* '''December 20''': A [[Bellman]] [https://www.conwaylife.com/forums/viewtopic.php?p=116491#p116491 search] by [[Tanner Jacobi]] turns up a new [[stable]] [[catalyst]] that can reset a [[beehive]] that has been pushed over by one cell by a collision.
* '''December 17''': [[Tanner Jacobi]] discovers [https://discord.com/channels/357922255553953794/370571014654001154/789169624842371122 a p61 pattern] that moves one cell per cycle, and can be supported by single-bit sparks, glider streams, or additional copies of the pattern on each side.
* '''December 15''': [[Matthias Merzenich]] [https://www.conwaylife.com/forums/viewtopic.php?f=2&p=115869#p115869 constructs] the first [[Gun#True-period_guns|true]] [[period-28 glider gun]].
* '''December 6''': John Winston Garth [https://www.conwaylife.com/forums/viewtopic.php?p=114481#p114481 discovers] [[doo-dah]], a new small period-21 [[tagalong]] for the [[weekender]], which can be used to create various [[2c/7 orthogonal]] [[puffer]]s and [[rake]]s.
* '''December 5''': [[User_talk:MathAndCode|MathAndCode]] and [[User:yujh|yujh]] [https://www.conwaylife.com/forums/viewtopic.php?p=114356#p114356 discover] 'NW26T157', a new [[Spartan]] conduit that converts a Herschel into three gliders, similar to [[NW31]] but with one glider on an output [[lane]] of a different [[color]].
* '''December 3-4''': [[Goldtiger997]] [https://www.conwaylife.com/forums/viewtopic.php?p=114036#p114036 finds] a final step for a [[turtle]] [[synthesis]], followed by a [https://www.conwaylife.com/forums/viewtopic.php?p=114209#p114209 complete 241-glider synthesis] the next day.
* '''November 24''': [[Goldtiger997]] [https://www.conwaylife.com/forums/viewtopic.php?t=&p=112239#p112239 completes] a [[barge crosser]], a mechanism which allows a glider signal to cross an arbitrarily long barge without causing permanent damage.
* '''November 18''': [[Goldtiger997]] finds [https://www.conwaylife.com/forums/viewtopic.php?p=111260#p111260 glider recipes] that can convert M2 [[minstrel]]s into M3 minstrels and vice versa.
* '''November 15''': [[wwei23]] [https://conwaylife.com/forums/viewtopic.php?p=110875#p110875 discovers] a new [[sparker]], a period-9 version of a [[heavyweight emulator]].
* '''October 30''': [[Golly]] 4.0 is [https://www.conwaylife.com/forums/viewtopic.php?p=108478#p108478 officially released].
* '''October 16''': [[Andrew Trevorrow]] makes available the first beta builds for [https://conwaylife.com/forums/viewtopic.php?p=106785#p106785 Golly 4.0], supporting Python 3.x and new rule types and neighborhoods, and enabling multi-color "Super" and "History" support for a wide range of two-state rules.
* '''September 27''': A [[burloaferimeter]] variant [https://www.conwaylife.com/forums/viewtopic.php?p=105040#p105040 appears] in an asymmetric [[soup]] found by [[Rob Liston]], making it the first natural {{period|7}} oscillator.
* '''September 26''': [[Pavel Grankovskiy]] [https://www.conwaylife.com/forums/viewtopic.php?p=104930#p104930 completes] [[Speed Demonoid]] version 2, removing the 2c/9 limitation; a [https://www.conwaylife.com/forums/viewtopic.php?p=105167#p105167 Golly script] can now build a spaceship with any rational diagonal speed below c/4 (subject to some practical size limitations).
* '''September 19''': [[MathAndCode]] and [[Adam P. Goucher]] [https://www.conwaylife.com/forums/viewtopic.php?p=104484#p104484 construct] a 17-glider [[reverse caber-tosser]], proving that all [[synthesizable]] patterns can be made with no more than 17 gliders and that all synthesizable [[still life]]s can be constructed with no more than one glider per [[bit]].
* '''September 19''': [[Goldtiger997]] [https://www.conwaylife.com/forums/viewtopic.php?p=104453#p104453 synthesizes] [[55P9H3V0]], the first period-9 spaceship to be synthesized.
* '''September 18''': [[Pavel Grankovskiy]] [https://www.conwaylife.com/forums/viewtopic.php?p=104423#p104423 constructs] a complete [[Speed Demonoid]], using double [[crabstretcher]]s to accelerate a [[self-constructing]] [[spaceship]] to 3492022/17833792=1746011/8916896 ≈ 0.1958c, very close to c/5.  The new spaceship can be adjusted to match any rational speed slower than 2c/9.
* '''September 15''': [[wwei23]] [https://www.conwaylife.com/forums/viewtopic.php?p=104102#p104102 discovers] several new 3-engine Corderships, including one that cleans up its trailing blocks with sideways gliders, similar to a 5-, 6-, or [[7-in-a-row Cordership]].
* '''September 9-17''': [[wwei23]] assembles a new type of period-192 [[4-in-a-row Cordership]], and later constructs [https://www.conwaylife.com/forums/viewtopic.php?p=104307#p104307 glider-to-Cordership] and [https://www.conwaylife.com/forums/viewtopic.php?p=104367#p104367 Cordership-to-glider] [[converter]]s for it.
* '''August 29''': [[User:Goldtiger997|Goldtiger997]] completes a [[synthesis]] of the first known [[2c/5]] [[spaceship]], [[44P5H2V0]], almost thirty years after its discovery; this is the third completed synthesis for a 2c/5 spaceship.
* '''August 23''': [[Adam P. Goucher]] adds to [[slmake]] a fast elbow push recipe created by [[Pavel Grankovskiy]], based on a [[c/4]] diagonal [[crab]] [[wickstretcher]]. This means that [[recipe]]s for self-constructing structures with a not-quite-attainable limit speed of c/4 can now be semi-automatically compiled.
* '''August 16''': [[Tanner Jacobi]] [https://www.conwaylife.com/forums/viewtopic.php?p=102367#p102367 discovers] a 14-glider recipe for a [[crab]] spaceship, down from the previous cost of 16, which can be used to reduce the size and construction cost of a wickstretcher [[seed]].
* '''August 14''': [[Rob Liston]] [https://www.conwaylife.com/forums/viewtopic.php?p=102387#p102387 finds] via [[apgsearch]] a third natural [[loafer]] emerging from asymmetric [[soup]].
* '''August 10''': Syntheses of a variety of [[pufferfish spaceship]]s make their way to [https://catagolue.hatsya.com/census/b3s23/synthesis-costs/xq36 Catagolue], thanks to an extension of the time required in online recipe submissions for all gliders to react.
* '''August 2-18''': [[Tanner Jacobi]] [https://conwaylife.com/forums/viewtopic.php?f=2&p=101555#p101555 completes] and later [https://www.conwaylife.com/forums/viewtopic.php?p=102465#p102465 improves] a [[1G seed]] for a c/4 diagonal [[wickstretcher]], enabling [[self-constructing]] spaceships with the fastest possible diagonal speed of (just below) [[c/4]].
* '''July 29''': [[Goldtiger997]] [https://conwaylife.com/forums/viewtopic.php?f=2&p=101323#p101323 constructs] a fast diagonal [[Demonoid]] puffer with velocity (4825784,4825784)c/45679544.
* '''July 21''': [[Adam P. Goucher]] [https://www.conwaylife.com/forums/viewtopic.php?f=2&p=100871#p100871 reduces] the cost of the [[reverse caber-tosser]] constructor to 32 gliders.
* '''July 20''': [[A for awesome]] [https://www.conwaylife.com/forums/viewtopic.php?p=100822#p100822 completes] a new stable [[L122]] Herschel conduit, based on a [https://www.conwaylife.com/forums/viewtopic.php?p=100724#p100724 P2 periodic variant] by [[User:Entity Valkyrie 2|Entity Valkyrie]].
* '''July 18''': A [[glider synthesis]] of [[70P2H1V0.1]] is [https://catagolue.hatsya.com/object/xq2_jimmgozmgmkqa323ms8zq2qamkgggqe4ziiqq26101z1/b3s23 posted to Catagolue] by [[Martin Grant]], making 70P2H1V0.1 the first period-2 spaceship to be synthesized.
* '''July 7''': [[Goldtiger997]] [https://conwaylife.com/forums/viewtopic.php?p=100181#p100181 completes] a record-breaking [[seed]] [[constellation]] that, when triggered by a single gliders, turn into a clean 100-glider recipe for a c/5 spaceship, [[58P5H1V1]]. This potentially improves the unreachable upper bound on Demonoid speed from c/12 to c/5.
* '''July 1''': A [https://www.conwaylife.com/forums/viewtopic.php?p=99834#p99834 collaborative effort] results in a series of HWSS Heisenburp circuits much smaller than the previous best known devices. Recovery time is under 1400 ticks. Some versions can also detect [[flotilla]]s with an HWSS along one edge.
* '''June 20-30''': Several new signal converter circuits are constructed, including [[Luka Okanishi]]'s [https://www.conwaylife.com/forums/viewtopic.php?p=99516#p99516 242-tick 30P5H2V0-to-G] and [[Goldtiger997]]'s 290-tick [https://www.conwaylife.com/forums/viewtopic.php?p=99516#p99196 HWSS-to-G]. Many others are catalogued [[User:Goldtiger997/Spaceship_Stable_Circuitry|here]].
* '''June 6-30''': [https://www.conwaylife.com/forums/viewtopic.php?p=99834#p99834 JP21's] and then [https://www.conwaylife.com/forums/viewtopic.php?p=99833&#p99833 Jeremy Tan's] eater collections spark new interest, and eaters are found for several previously inedible spaceships such as [[dragon]], [[Canada goose]], and [[brain]].
* '''June 8''': A [https://conwaylife.com/forums/viewtopic.php?p=98622#p98622 collaborative effort] produces a fully universal *WSS-to-glider [[converter]] that recovers in only 588 ticks, and works even if moved by an odd number of cells along the input [[lane]].
* '''June 7''': [[Matthias Merzenich]] [http://www.conwaylife.com/forums/viewtopic.php?t=&p=98586#p98586 completes] an adjustable-width [[c/5 orthogonal]] [[wickstretcher]] using components by [[Keith Amling]] and [[Hartmut Holzwart]].
* '''June 5''': [[Entity Valkyrie]] completes a mechanism suggested by [[Martin Grant]] to make a [[Bandersnatch]], a [[glider-constructible]] [[color-changing]] glider shifter with a recovery time of only 70 ticks.
* '''May 25''': [[Louis-François Handfield]] and [[Goldtiger997]] [https://www.conwaylife.com/forums/viewtopic.php?p=97701#p97701 find] improved [[highway robber]]s with better [[clearance]] and 876- and 873-tick [[recovery time]]s.
* '''May 22''': [[Entity Valkyrie]] [https://www.conwaylife.com/forums/viewtopic.php?p=97489#p97489 constructs] a [[gun]] for [[58P5H1V1]], the first gun to produce a [[c/5 diagonal]] spaceship.
* '''May 9''': The [[silverfish]], a self-supporting 31c/240 [[caterpillar]]-type spaceship designed using the [[slow salvo]] recipe from the [[Centipede]] but a simpler front end, [https://www.conwaylife.com/forums/viewtopic.php?p=96462#p96462 is completed].
* '''May 6''': [[Goldtiger997]] solves the problem of glider-constructing all [[Still_life#Pseudo_still_lifes|pseudo still life]]s consisting of [https://www.conwaylife.com/forums/viewtopic.php?p=96210#p96210 4&times;N chunks] of blocks [[agar]].
* '''May 3-4''': [[Louis-François Handfield]] adapts [[Martin Grant]]'s new [https://www.conwaylife.com/forums/viewtopic.php?p=95988#p95988 HL161H conduit] to make a new compact [[color-changing]] [[edge shooter]], [https://www.conwaylife.com/forums/viewtopic.php?p=96093#p96093 HSW47T214].
* '''Apr. 21''': [[Rob Liston]] [https://www.conwaylife.com/forums/viewtopic.php?p=95336#p95336 discovers] [[49768M]], the longest-lasting known [[methuselah]] fitting within a 16&times;16 [[bounding box]].
* '''Apr. 11''': [[John Horton Conway]], the inventor of [[Conway's Game of Life]], dies in Princeton, NJ at the age of 82.
* '''Apr. 8''': [[Louis-François Handfield]] [https://www.conwaylife.com/forums/viewtopic.php?p=93647#p93647 constructs] a much faster and more compact [[universal regulator]].
* '''Apr. 3''': [[Goldtiger997]], [[Tanner Jacobi]], and others [https://www.conwaylife.com/forums/viewtopic.php?p=93167#p93167 complete] the [[glider synthesis]] for [[58P5H1V1]], the first synthesis for a [[c/5 diagonal]] [[spaceship]].
* '''Apr. 1''': A [[loafer]] [https://www.conwaylife.com/forums/viewtopic.php?p=93011#p93011 appears] for the first time in an [[asymmetric]] [[soup]], submitted to [[Catagolue]] by [[John Goodman]]. Coincidentally, this occurred exactly two years after [[Dave Greene]] [https://www.conwaylife.com/forums/viewtopic.php?p=58727#p58727 posted] a fake soup for April Fools' Day 2018.
* '''Mar. 25''': [[Martin Grant]] and others [https://www.conwaylife.com/forums/viewtopic.php?p=92323#p92323 complete] the [[glider synthesis]] for [[56P6H1V0]], the first synthesis for a [[c/6 orthogonal]] [[spaceship]] and the first for a {{periodS|6}} [[spaceship]].
* '''Mar. 22''': [[Andrew J. Wade]] uses [https://gitlab.com/andrew-j-wade/life_slice_ship_search life_slice_ship_search] to find [[186P7H2V0]], a third [[2c/7 orthogonal]] spaceship, part of an infinite family based on a known 2c/7 [[wave]].
* '''Mar. 22''': [[Goldtiger997]] completes the activation stage for a recipe for [[56P6H1V0]], which along with the [[spider]] and [[weekender]] is now one of the largest [[elementary]] spaceships for which a [[glider synthesis]] can (presumably) be completed.
* '''Mar. 17''': [[Andrew J. Wade]] [https://www.conwaylife.com/forums/viewtopic.php?t=&p=91518#p91518 discovers] [[409P6H1V0]], the narrowest known [[c/6 orthogonal]] spaceship, using [https://gitlab.com/andrew-j-wade/life_slice_ship_search life_slice_ship_search].
* '''Mar. 9''': [[Richard K. Guy]], discoverer of the [[glider]], [https://aperiodical.com/2020/03/richard-k-guy-1916-2020/ passes away] at the age of 103.
* '''Feb. 9''': [[Rob Liston]] [https://www.conwaylife.com/forums/viewtopic.php?p=89261#p89261 discovers] a new p16 oscillator, [[Rob's p16]], using [[apgsearch]]. It is the smallest known p16 by both [[population]] and [[bounding box]], the first p16 to appear from an asymmetric [[soup]], the first [[strictly volatile]] p16, and the first new [[rotor]] to be discovered by asymmetric soup search since the 1980s.
* '''Feb. 8''': All 19-bit [[still life]]s [https://www.conwaylife.com/forums/viewtopic.php?p=89061#p89061 are confirmed] to have valid [[glider syntheses]].
* '''Jan. 26''': [[Dave Greene]] [https://conwaylife.com/forums/viewtopic.php?f=7&t=4279 creates] LifeSuper, an extended version of [[LifeHistory]] for advanced pattern annotation.
* '''Jan. 26''': Entity Valkyrie [https://www.conwaylife.com/forums/viewtopic.php?f=2&t=1557&p=88186#p88186 constructs] a period-11040 [[spider]] [[gun]], the first gun to fire a [[c/5 orthogonal]] spaceship.
* '''Jan. 13''': [[Matthias Merzenich]] sets up a [https://conwaylife.com/forums/viewtopic.php?f=2&t=4260 new "manually distributed" search] (table [https://conwaylife.com/wiki/User:Sokwe/C/8-width-19 here]), to find out whether a symmetric c/8 spaceship exists at width 19.
* '''Jan. 9''': [[Nathaniel Johnston]] completes a long-running enumeration of [https://www.conwaylife.com/forums/viewtopic.php?p=87225#p87225 34-bit still lifes], finding 35,422,864,104 strict still lifes with 34 bits, and 41,058,173,683 pseudo still lifes with the same bit count, including 26 [[triple pseudo still life]]s.
* '''Jan. 5''': A Rules namespace update on the LifeWiki allows [[LifeViewer]] to display in-browser many patterns using rule tables and trees, which previously couldn't be simulated without copying them into Golly.
 
==2019==
* '''Dec. 30''': [[Andrew J. Wade]] uses his search program, [https://gitlab.com/andrew-j-wade/life_slice_ship_search life_slice_ship_search], to find the second elementary 2c/7 spaceship, [[scholar]].
* '''Dec. 29''': Goldtiger997 [https://conwaylife.com/forums/viewtopic.php?f=2&p=86668#p86668 synthesises] a variant of [[David Hilbert]].
* '''Dec. 28''': [[Martin Grant]] finds a [https://www.conwaylife.com/forums/viewtopic.php?p=86644#p86644 counterexample] to a 22-year old conjecture by [[Dean Hickerson]] about still-life finitization.
* '''Dec. 25''': Pavgran assembles [[Slavic]] [https://www.conwaylife.com/forums/viewtopic.php?p=86540#p86540], a quadratic-growth pattern similar to [[Hydra]] that doesn't need a central gun.
* '''Dec. 9''': Goldtiger997 [https://conwaylife.com/forums/viewtopic.php?f=2&t=1557&p=86121#p86121 reduces] the cost of the [[spider]] synthesis by over 100 gliders.
* '''Dec. 1''': [[Martin Grant]] [https://www.conwaylife.com/forums/viewtopic.php?f=2&t=1437&p=85900#p85900 discovers] a new period-49 oscillator based on a partial result by [[Jason Summers]].
* '''Nov. 24''': Luka Okanishi [https://www.conwaylife.com/forums/viewtopic.php?p=85719#p85719 discovers] a [[David Hilbert|period-23 oscillator]], leaving [[Omniperiodic|only four periods]] for which no non-trivial oscillator is known.
* '''Nov. 20''': [[Dongook Lee]] finds a [[p7 pipsquirter]] that is [https://conwaylife.com/forums/viewtopic.php?p=85532#p85532 significantly smaller] than the old [[p7 pipsquirter]], leading to bounding-box reductions in the gun collection and various oscillators.
* '''Nov. 18''': [[Tanner Jacobi]], Goldtiger997 and others find improved recipes for a number of difficult-to-synthesize still lifes, reducing the maximum cost for 16-bit still lifes to [https://www.conwaylife.com/forums/viewtopic.php?p=85457#p85457 14 gliders].
* '''Nov. 17''': Michael Simkin uses [[pi calculator]] and [[Osqrtlogt]] technology to build a Life pattern that prints the song [https://www.conwaylife.com/forums/viewtopic.php?p=85414#p85414 "99 Bottles of Beer on the Wall"].
* '''Nov. 12''': Bullet51 and Aidan F. Pierce discover [https://conwaylife.com/forums/viewtopic.php?f=2&t=1437&p=85245#p85245 new] [https://conwaylife.com/forums/viewtopic.php?f=2&t=1437&p=85246#p85246 sparky] [https://conwaylife.com/forums/viewtopic.php?f=2&t=1437&p=85249#p85249 period-13 oscillators].
* '''Nov. 4''': [[Alex Greason]], [[Arie Paap]], BlinkerSpawn, and [[Dongook Lee]] collaborate on the [https://www.conwaylife.com/forums/viewtopic.php?p=84877#p84877 discovery of phoenix agar oscillators] on different-sized tori, which can [https://www.conwaylife.com/forums/viewtopic.php?p=84994#p84994 reproduce the behavior of XOR oscillators] in other rules (see [https://oeis.org/A160657 OEIS A160657]).
* '''Oct. 28''': Goldtiger997 [https://conwaylife.com/forums/viewtopic.php?f=2&t=1557&p=84593#p84593 finds] a 64-glider [[glider synthesis|synthesis]] for the [[27P4H1V1]] spaceship (later reduced to [https://www.conwaylife.com/forums/viewtopic.php?f=2&p=85966#p85966 31 gliders]).
* '''Oct. 22''': Goldtiger997 [https://www.conwaylife.com/forums/viewtopic.php?p=84423#p84423 constructs] a p612 [[gun]] for the [[46P4H1V0]] spaceship.
* '''Oct. 9''': All 18-bit [[still life]]s [https://www.conwaylife.com/forums/viewtopic.php?p=83979#p83979 are confirmed] to have valid [[glider syntheses]].
* '''Sep. 9''': The 17-in-17 Project [http://www.conwaylife.com/forums/viewtopic.php?p=82560#p82560 is completed], showing that every 17-bit [[still life]] can be [[glider synthesis|constructed]] using at most 16 [[glider]]s.
* '''Aug. 15''':  Update to a previous news item from 21 April 2019 (see archive): all 15-bit [[still life]]s can [http://conwaylife.com/forums/viewtopic.php?f=2&p=81277#p81277 now be constructed] with at most 12 [[glider]]s.
* '''July 16''': [[Dave Greene]] [http://www.conwaylife.com/forums/viewtopic.php?t=&p=79686#p79686 constructs] a [[large prime oscillator]] with a period equal to the largest Mersenne prime currently known, 2<sup>82589933</sup>-1.
* '''June 19''': A [http://conwaylife.com/forums/viewtopic.php?p=78036&#p78036 huge long-term collaborative effort] is completed, showing that all glider-constructible [[still life]]s can (at least in theory) be constructed using less than two [[glider]]s per [[bit]].
* '''June 2''': Goldtiger997 completes a [http://conwaylife.com/forums/viewtopic.php?p=77029#p77029 glider-to-25P3H1V0.2 converter], based on [[Martin Grant]]'s [[25P3H1V0.2]] synthesis from 2017.
* '''May 29''': Thomas Cabaret makes available a [https://cp4space.wordpress.com/2019/06/11/self-replicator-caught-on-video/ Passe-Science video] featuring [[self-constructing]] CA patterns, including several minutes showing details of the [[0E0P metacell]].
* '''May 25''': Goldtiger997 completes a [http://conwaylife.com/forums/viewtopic.php?p=76686#p76686 glider-to-crab converter], with the help of a script implementing a universal glider synchronization [[toolkit]].
* '''May 24-30''':  christoph.r posts several [http://conwaylife.com/forums/viewtopic.php?p=76645#p76645 unusual breeder designs] based on c/10 technology, including [http://conwaylife.com/forums/viewtopic.php?p=76901#p76901 some variants] on a [[pufferfish]] [[breeder]].
* '''May 9''': GilGil makes available a [http://conwaylife.com/forums/viewtopic.php?p=76571#p76571 huge but elegant 60-line printer] traveling at c/10, based on fleets of [[fireship]]s.
* '''Apr. 21''': [http://conwaylife.com/forums/viewtopic.php?p=75278#p75278 Improvements to glider syntheses] mean that every 15-bit still life has a recipe with at most 13 gliders. For current maximum costs, see the table in [https://conwaylife.com/wiki/Glider_synthesis#Still_life_syntheses Still-life syntheses].
* '''Apr. 17''': [[Tanner Jacobi]] and [[Matthias Merzenich]] set several new bounding-box records with a [http://conwaylife.com/forums/viewtopic.php?p=75185#p75185 new glider gun mechanism] based on filtered MWSSes.
* '''Apr. 14''': [[Michael Simkin]] completes a [[self-constructing]] puffer pattern which he calls [[Remini]] ("retro Gemini"),  using a single-channel design with nothing but 1970s circuit mechanisms.
* '''Apr. 10''': [[Jeremy Tan]] releases a new glider recipe database, [http://conwaylife.com/forums/viewtopic.php?p=74753#p74753 Shinjuku], specifically for tracking lowest-cost syntheses.
* '''Apr. 6-7''': [[LifeViewer]] standardizes support for [[triangular neighbourhood]]s starting with Build 320.
* '''Apr. 5''': An exhaustive computer search run by [[Nathaniel Johnston]] reveals that there are 14,223,867,298 strict and 15,851,861,075 pseudo [[:Category:Still lifes with 33 cells|33-bit]] [[still life]]s, including eleven pseudo still lifes that can be partitioned into [[Triple pseudo still life|three stable pieces but not two]], and none that can be partitioned into [[Quad pseudo still life|four stable pieces but not two or three]].[http://conwaylife.com/forums/viewtopic.php?p=74524#p74524]
* '''Mar. 27''': The last remaining [[:Category:Strict still lifes with 14 cells|14-bit]] [[still life]], [https://catagolue.hatsya.com/object/xs14_4ai3zwo9a4/b3s23 xs14_4ai3zwo9a4], appears in a [[symmetry|C1]] [[soup]] on [[Catagolue]], in a haul submitted by an anonymous user.[http://www.conwaylife.com/forums/viewtopic.php?p=74007#p74007]
* '''Mar. 24''': [[apgsearch]] v5.03 gains the ability to log 'megasized' [[soup]]s with final [[population]]s exceeding 3,000.[https://gitlab.com/apgoucher/apgmera/commit/2133cb40147cbb7b70f1a5fb4709f8f3b2feb6f7] [[Apgsearch#Version_5.x|apgsearch 5.x]] can also pre-process asymmetric C1 B3/S23 soups on GPUs with CUDA support.[http://conwaylife.com/forums/viewtopic.php?p=73557#p73557]
* '''Mar. 7''': A [[spider]] [[glider synthesis|synthesis]] using 574 [[glider]]s and 9 [[LWSS]]es is found by [[Martin Grant]]. [http://www.conwaylife.com/forums/viewtopic.php?p=72705#p72705]
* '''Mar. 3''': A [[figure eight on pentadecathlon|period-120 oscillator]], the highest period thus far, occurs from a natural [[soup]] on [[Catagolue]].
* '''Mar. 2''': Several symmetric-soup [[diehard]]s with [https://catagolue.hatsya.com/object/messless_15h/b3s23 lifespans over 1500 ticks] are found by 'carybe', using [[apgsearch]].
* '''Feb. 12''': A [[lightweight Schick engine]] appears from a natural (C1) [[soup]] on [[Catagolue]].
* '''Feb. 9''': A [[47575M|47,575-tick 16x16 methuselah]] found by Adam Goucher via [[apgsearch]] yields a 16-cell, 47,487-tick methuselah. This discovery skips over several empty 1000-tick bins in [[Catagolue]] above the previous record 16x16 methuselah, [[Homer]].
* '''Feb. 4''': A glider detection and removal upgrade in [[apgsearch]] version 4.91 gives a search speed boost of well over 50% compared to version 4.88.
* '''Feb. 4''': [[Tanner Jacobi]] and [[Martin Grant]] [http://www.conwaylife.com/forums/viewtopic.php?p=69591#p69591 find a recipe], subsequently reduced to 88 gliders, for the first-ever synthesizable [[c/4]] spaceship, [[46P4H1V0]].
* '''Jan. 21 - Feb. 1''': Additional (2,1)c/6 [[minstrel]]s and spaceship connections are found, bringing the number of combinations of elementary minstrels into double digits.
* '''Jan. 25''': the ''[[Pattern of the Year#2018|Pattern of the Year 2018]]'' competition concludes, with [[Sir Robin]] taking first place.
* '''Jan. 25''': [[LifeViewer]] [http://conwaylife.com/forums/viewtopic.php?p=68595#p68595 build 282] goes live on the LifeWiki and forums, with several enhancements including new labeling functionality.
* '''Jan. 20''': [[Catagolue]] collects a record-setting longest-lived asymmetrical 16x16 [[diehard]], with a lifespan of 1058 ticks.
* '''Jan. 17''': A new period-8 domino sparker, [[230P8]], is [http://conwaylife.com/forums/viewtopic.php?p=68099p68099 discovered by Arie Paap] and [http://conwaylife.com/forums/viewtopic.php?p=68104#p68104 reduced by 'Bullet51'].
* '''Jan 16-18''': Four new [[minstrel]]s  are found, plus a lucky connection of an existing minstrel to [[knightwave]], creating for the first time a [[grammar]] that allows for an infinite number of distinct [[elementary]] [[knightship]]s.
* '''Jan 10''': A new period-24 oscillator, [[dueling banjos]], turns up in an [[apgsearch]] soup search. Uses so far include a smaller [[period-24 glider gun]], with associated improvements to p16 and p48 glider guns and a p48 LWSS gun.
* '''Jan 3-7''': Record-setting [[diehard]]s are found by [[Rob Liston]] and [[Apple Bottom]] via [[apgsearch]].


==2018==
==2018==
* <!-- Apr 04 --> A [[p3 bumper|p3 reflector]] is discovered by Arie Paap based on Tanner Jacobi's [[bumper]] reaction.  This is the first reflector capable of reflecting a p39 glider stream.
* '''Dec 7''': A new oblique [[camelship]], much smaller and lower population than the [[Spaceship#Adjustable_spaceships|Gemini 3 variant]] from 2010, is completed by Chris Cain.
* <!-- Mar 06 --> [[Sir Robin]], the first [[elementary]] [[knightship]] in [[Conway's Game of Life|Life]], is discovered by [[Adam P. Goucher]] and [[Tomas Rokicki|Tom Rokicki]].
* '''Dec 2''': The value of V, the lowest number for which an oscillator can be constructed with strict [[volatility]] 1 for that or any higher period, is reduced to [http://www.conwaylife.com/forums/viewtopic.php?p=66138#p66138 3,506,909 ticks].
* <!-- Feb 19 --> The [[2-engine Cordership]] wins the 2017 [[Pattern of the Year]] competition, with [[Tanner's p46]] taking second place.
* '''Nov 30''': Adam P. Goucher sets another new record using the latest apgsearch by finding "Homer", a [[42883M|16x16 methuselah with a lifespan of 42883 ticks]].
* '''Nov 28''': An update to [[slsparse]] allows it to recognize [[45-degree MWSS-to-G]] converters in any orientation, and use unidirectional [[slow salvo]] recipes to construct them.
* '''Nov 18''': Entity Valkyrie discovers a new period-13 [[FNG]] suppression mechanism, allowing the [[true]] [[period-52 glider gun]] to be reduced to less than a seventh of its previous size.
* '''Nov 12''': A working [[0E0P metacell]] is announced by [[Adam P. Goucher]], along with [https://b3s23life.blogspot.com/2018/11/new-tools-for-self-construction.html several improvements] to [[slmake]], the program used to compile the metacell.
* '''Oct 31''': An update to [[apgsearch]] sets another new record by finding a [[42100M|16x16 methuselah]] with a lifespan of 42,100 ticks.
* '''Oct 31''': A self-constructing "loopship", a new type of spaceship with a non-[[Geminoid]] design, is completed by [[Dave Greene]].
* '''Oct 30''': A [[periodic]] (p5 or p4) [http://www.conwaylife.com/forums/viewtopic.php?p=65290#p65198 quinti-Snark] is constructed by Tanner Jacobi, with the usual implications for reductions to the glider gun collection.
* '''Oct 29''': [[apgluxe]] v4.56-[[lifelib|ll]]2.0.5 and [[Catagolue]] add support for [[BSFKL]] rules.
* '''Oct 28''': A record-setting 39,693-tick methuselah, [[Wilma]], is discovered by [http://www.conwaylife.com/forums/viewtopic.php?t=&p=65124#p65124 Rob Liston] using a custom FPGA [[soup]] searcher.
* '''Oct 27''': An [http://www.conwaylife.com/forums/viewtopic.php?p=65112#p65111 new LWSS synthesis] by [[Chris Cain]] allows for [[LWSS]], [[MWSS]], and [[HWSS]] guns with [[pseudo]] [[period]]s as low as 18.  18 is the minimum for HWSS streams.)
* '''Oct 21''': [[Hartmut Holzwart]] completes a [http://www.conwaylife.com/forums/viewtopic.php?p=64968#p64968 two-dimensionally extensible wick-supporting pushalong] with a minimum width of over a thousand cells.
* '''Oct 21''': New [[Orthogonoid]]s with periods 2<sup>27</sup> and 2<sup>28</sup> are [http://www.conwaylife.com/forums/viewtopic.php?p=64949#p64949 constructed] by [[Dave Greene]], followed by a 2<sup>25</sup> version by [[Adam P. Goucher]].
* '''Oct 12''': A new [[:Category:Oscillators with period 14|period-14]] [[oscillator]], [[34P14.1]], is found by 'carybe'.
* '''Oct 11''': Christoph R. [http://www.conwaylife.com/forums/viewtopic.php?p=64623#p64623 discovers] a [http://www.conwaylife.com/forums/viewtopic.php?p=64627#p64627 new Fireship tagalong].
* '''Oct 10''': [[Dave Greene]] [http://www.conwaylife.com/forums/viewtopic.php?p=64590#p64590 completes the construction] of two new [[HashLife]]-friendly [[Demonoid]]s.
* '''Oct 07''': [http://www.conwaylife.com/forums/viewtopic.php?p=64619#p64489 A complex 140-glider synthesis] of a c/2 signal traveling along a diagonal long<sup>N</sup> barge [[wire]] is completed by Martin Grant.
* '''Oct 03''': A [http://conwaylife.com/forums/viewtopic.php?p=64315#p64315 p4 [[bouncer]] reflector] is constructed by Arie Paap.  With the p9 reflector, this completes the set of [[colour-changing]] and [[colour-preserving]] reflectors with periods from 4 to 9.
* '''Oct 02''': A p9 reflector is discovered [http://conwaylife.com/forums/viewtopic.php?f=2&t=1452&start=1750#p64309 by Matthias Merzenich and "carybe"] based on Noam Elkies' [[bouncer]] reaction.  This is the first reflector capable of reflecting a p27 glider stream.
* '''Oct 02''': A [[true]] p33 gun is discovered [http://conwaylife.com/forums/viewtopic.php?f=2&t=3552&p=64281#p64266 by Arie Paap and Matthias Merzenich].
* '''Sep 27''': A [[true]] [[p52 gun]] is [http://conwaylife.com/forums/viewtopic.php?p=64084#p64084 completed by a collaborative effort].
* '''Sep 9''': [[Dave Greene]] completes the construction of a stable [[line crosser]] with a [[repeat time]] of 501 ticks.
* '''Jul 15/19''': The [[Minstrel]]s, a group of [[tagalong]]s for [[Sir Robin]], are discovered.
* '''Jun 14''': The [https://b3s23life.blogspot.com/2018/06/the-meaning-of-life-is-42-but-cost-of.html construction] of a [[reverse caber-tosser]] shows that any [[glider synthesis|glider-constructible]] object can be constructed with at most 35 [[glider]]s.
* '''Apr 04''': A [[p3 bumper|p3 reflector]] is discovered by Arie Paap based on Tanner Jacobi's [[bumper]] reaction.  This is the first reflector capable of reflecting a p39 glider stream.
* '''Mar 06''': [[Sir Robin]], the first [[elementary]] [[knightship]] in [[Conway's Game of Life|Life]], is discovered by [[Adam P. Goucher]] and [[Tomas Rokicki|Tom Rokicki]].
* '''Feb 19''': The [[2-engine Cordership]] wins the 2017 [[Pattern of the Year]] competition, with [[Tanner's p46]] taking second place.
 
==2009==
{{LifeWiki:News/600 pattern milestone}}
{{LifeWiki:News/500 pattern milestone}}
{{LifeWiki:News/400 pattern milestone}}
{{LifeWiki:News/300 pattern milestone}}
{{LifeWiki:News/200 pattern milestone}}
{{LifeWiki:News/LifeWiki goes live}}


==Also see==
==Also see==
* [[LifeWiki:Did you know archive]]
* [[LifeWiki:Did you know archive]]

Latest revision as of 13:38, 27 March 2024

The following is a list of past news items that ran on the Main Page.

Current news

The following news items are currently live on the Main Page:

2024

2023

2022

2021

2020

2019

2018

2009

 600 pattern milestone — June 19th, 2009

LifeWiki is now home to a grand total of 600 patterns and over 750 articles. Exciting new additions to the wiki include weekly featured articles on the front page (as well as trivia snippets), rules boxes on pattern pages that describe what rules that particular pattern functions under, a much more complete list of the smallest known oscillators of each period, our first few articles about reflectors and recent reflector developments (see the rectifier), and several more pages detailing the accomplishments of specific Life enthusiasts. As always, thanks to all of our contributors!

 500 pattern milestone — April 26th, 2009

Over 500 patterns are now catalogued in LifeWiki, and there are over 600 articles total. Some of the most notable recent additions to the database include the addition of glider syntheses in the infoboxes of patterns, greatly expanded information about first-discovered and smallest known spaceships and oscillators of specific speeds and periods, expanded articles about other Life-like cellular automata (such as 2x2, HighLife, and Move), and the first few pages to describe the accomplishments of specific Life enthusiasts (see Noam Elkies for an example). Thanks to all of our contributors!

 400 pattern milestone — March 13th, 2009

LifeWiki is now home to over 400 patterns. Some of the more notable additions since the last milestone include a searchable interface for oscillators, and animated images for all oscillators and spaceships. With a solid base catalogue of patterns now established, one of the main goals for LifeWiki will now be to catalogue more recent discoveries.

 300 pattern milestone — February 6th, 2009

It hasn't even been a month since its launch and LifeWiki has doubled the number of patterns, articles, and images that it contains. In particular, with these new additions LifeWiki now catalogues 132 still lifes; far more than any other source on the web. Thanks go out to Elithrion who has helped us increase the number of animated images available to 74, which is more than double the number that were available a week ago.

 200 pattern milestone — January 27th, 2009

LifeWiki today passed its first notable milestone - it now catalogues over 200 patterns (201 as of this writing). In addition, there are now 263 images, and many of the non-pattern pages have been expanded considerably (see, for example, still life and methuselah).

 LifeWiki goes live — January 16th, 2009

After several weeks in development, the LifeWiki has gone live. It is making its debut with 138 patterns, 162 articles and 175 images, but this will hopefully be expanded greatly in the near future. If you consider yourself a Life enthusiast, please consider helping expand the wiki by adding or expanding articles.

Also see