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]]:
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==2019==
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* '''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. The upper limit is currently 12 gliders for 14-bit still lifes, 10 gliders for 13 bits, 8 gliders for 12 bits, and 7 gliders for 11 bits.
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* '''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.
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* '''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.
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* '''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.
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* '''Apr. 6-7''': [[LifeViewer]] standardizes support for [[triangular neighbourhood]]s starting with Build 320.
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* '''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]
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* '''Mar. 27''': The last remaining [[:Category:Strict still lifes with 14 cells|14-bit]] [[still life]], [https://catagolue.appspot.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]
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* '''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]
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* '''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]
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* '''Mar. 3''': A [[figure eight on pentadecathlon|period-120 oscillator]], the highest period thus far, occurs from a natural [[soup]] on [[Catagolue]].
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* '''Mar. 2''': Several symmetric-soup [[diehard]]s with [https://catagolue.appspot.com/object/messless_15h/b3s23 lifespans over 1500 ticks] have been found by 'carybe', using [[apgsearch]].
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* '''Feb. 12''': A [[lightweight Schick engine]] appears from a natural (C1) [[soup]] on [[Catagolue]].
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* '''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]].
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* '''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.
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* '''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]].
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* '''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.
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* '''Jan. 25''': the ''[[Pattern of the Year#2018|Pattern of the Year 2018]]'' competition concludes, with [[Sir Robin]] taking first place.
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* '''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.
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* '''Jan. 20''': [[Catagolue]] collects a record-setting longest-lived asymmetrical 16x16 [[diehard]], with a lifespan of 1058 ticks.
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* '''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'].
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* '''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.
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* '''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.
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* '''Jan 3-7''': Record-setting [[diehard]]s are found by [[Rob Liston]] and [[Apple Bottom]] via [[apgsearch]].
  
 
==2018==
 
==2018==
''(none yet)''
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* '''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.
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* '''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].
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* '''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]].
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* '''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.
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* '''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.
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* '''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.
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* '''Oct 31''': An update to [[apgsearch]] sets another new record by finding a [[42100M|16x16 methuselah]] with a lifespan of 42,100 ticks.
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* '''Oct 31''': A self-constructing "loopship", a new type of spaceship with a non-[[Geminoid]] design, is completed by [[Dave Greene]].
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* '''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.
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* '''Oct 29''': [[apgluxe]] v4.56-[[lifelib|ll]]2.0.5 and [[Catagolue]] add support for [[BSFKL]] rules.
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* '''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.
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* '''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.)
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* '''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.
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* '''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]].
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* '''Oct 12''': A new [[:Category:Oscillators with period 14|period-14]] [[oscillator]], [[34P14.1]], is found by 'carybe'.
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* '''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].
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* '''Oct 10''': [[Dave Greene]] [http://www.conwaylife.com/forums/viewtopic.php?p=64590#p64590 completes the construction] of two new [[HashLife]]-friendly [[Demonoid]]s.
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* '''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.
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* '''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.
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* '''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.
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* '''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].
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* '''Sep 27''': A [[true]] [[p52 gun]] is [http://conwaylife.com/forums/viewtopic.php?p=64084#p64084 completed by a collaborative effort].
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* '''Sep 9''': [[Dave Greene]] completes the construction of a stable [[line crosser]] with a [[repeat time]] of 501 ticks.
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* '''Jul 15/19''': The [[Minstrel]]s, a group of [[tagalong]]s for [[Sir Robin]], are discovered.
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* '''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.
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* '''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.
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* '''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]].
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* '''Feb 19''': The [[2-engine Cordership]] wins the 2017 [[Pattern of the Year]] competition, with [[Tanner's p46]] taking second place.
  
 
==Also see==
 
==Also see==
 
* [[LifeWiki:Did you know archive]]
 
* [[LifeWiki:Did you know archive]]

Revision as of 22:29, 2 July 2019

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

2019

2018

Also see