Pattern of the Year 2018 competition
Posted: December 31st, 2018, 5:24 pm
It's a new year... which means we can hold the POTY competition for the previous one! The same voting as the previous 2017 and belated 2013 and 2014 competitions will be used.
There were quite a number of interesting patterns discovered in 2018, so here's an initial list of entries:
EDIT: Additional entries:
There were quite a number of interesting patterns discovered in 2018, so here's an initial list of entries:
- #01 0E0P metacell (by Adam P. Goucher): a unit cell which doesn't require a background grid of OFF cells to function, allowing unusual classes of patterns such as quadratic replicators and RROs to be imported into CGoL from other rules.
- #02 42883M (by Adam P. Goucher): a recording-breaking methuselah, discovered using apgsearch.
- #03 Jormungant's G-to-H (by Jormungant): a 2G-to-H converter with a short recovery time, allowing the optimisation of numerous guns.
- #04 Quinti-Snarks (by Tanner Jacobi): period-quintupling reflectors useful for guns.
- #05 Period-33 glider gun (by Arie Paap and Matthias Merzenich): the first true period-33 gun.
- #06 Period-52 glider gun (by Dave Greene, Matthias Merzenich, Adam P. Goucher, Chris Cain, and Entity Valkyrie): the first true period-52 gun.
- #07 Reverse caber-tosser (by Adam P. Goucher, Dave Greene, and Chris Cain): a complex mechanism which theoretically allows any glider-synthesisable pattern to be synthesised in just 35 gliders, by encoding the pattern's complexity into the distance between the gliders rather than their quantity.
- #08 Sierpinski triangle generator (by Luka Okanishi): a breeder that outputs gliders in the shape of a growing Sierpinski triangle.
- #09 Sir Robin (by Adam P. Goucher and Tomas Rokicki): a (2,1)c/6 spaceship, the first elementary knightship discovered in CGoL.
EDIT: Additional entries:
- #10 Bronco (by Tanner Jacobi): the second elementary G-to-H to be discovered, following the venerable syringian TJ/JT tradition -- discovered by Tanner Jacobi and named by Jeremy Tan;
- #11 New self-constructing spaceships (by Dave Greene): including a loopship and HashLife-friendly variants of the Orthogonoid and Demonoid (no giraffeship yet);
- #12 Stable line crosser (by Dave Greene and Goldtiger997): a modernised rehash of David Bell's periodic circuitry for transmitting a glider across a line of cells;
- #13 Cottonmouth (by A for Ampere): a pushalong for the c/10 copperhead spaceship;
- #14 Fast Universal Regulators (by Dave Greene): ingenious use of pulse dividers to reduce the period of the drive gun of a universal regulator;
- #15 5c/9 signal injector (by Rhombic, Simon Ekström, and Chris Cain): a method of transforming Herschels to 5c/9 drifters with a recovery time of 62;
- #16 Minstrel 4 (by Entity Valkyrie): the first manually-assembled knightship;
- #17 New high period oscillators discovered from symmetrical soup searches (by carybe)
- #18 Self-constructing strict volatility-1 oscillator compiled by Goldtiger997, with a record-low V value of 3,506,910;
- #19 Camelship (by Chris Cain): a self-constructing spaceship with a new step distance, (3,1), based in part on the volatility-1 oscillator but with a unique design component, a loop-crossing recipe-switching signal;
- #20 c/2 diagonal telegraph recipe (by Martin Grant): a 140-glider recipe to create a detectable c/2 diagonal signal traveling non-destructively along a very^N long barge or ship;
- #21 Goldtiger997's Amazing 2 in 1 Reusable Multipurpose Minstrel Remover and Detector™ (by Goldtiger997);
- #22 Period-doubling fireship tagalong (by christoph.r)
- #23 Infinite distinct diagonal spaceships and infinite distinct orthogonal spaceships guns (by Adam P. Goucher and Goldtiger997)
- #24 Huge 2D-extensible wick-supporting pushalong (by Hartmut Holzwart): minimum length of over a thousand cells.
- #25 p9 bouncer (by Matthias Merzenich, carybe, and Noam Elkies): can reflect a p27 glider stream using a p9 oscillator found with apgsearch the same day.
- #26 p3 bumper (by Arie Paap and Tanner Jacobi): the first reflector to work at p39. It also enabled the construction of a smaller p57.
- #27 The first non-monotonic 2c/5 ship (by Arie Paap, Matthias Merzenich, and Bullet51)
- #28 Turing Machine Simulator (by Michael Simkin)
- #29 p46 gliderless LWSS gun (by Nathaniel Johnston): the smallest known gliderless LWSS gun.
- #30 p4 bouncer (by Arie Paap): the fastest known p4 reflector.
- #31 p6 180-degree reflector and related guns (by Arie Paap, Tanner Jacobi, and Jormungant)
- #32 New honeyfarm hasslers [1], [2], [3] (by Tanner Jacobi and Matthias Merzenich)
- #33 New mid-period (7-10) sparkers [1], [2], [3], [4], [5], [6], [7], [8] (by Dongook Lee, Josh Ball, Martin Grant, Aidan F. Pierce, carybe, and Bullet51)
- #34 p18-21 pseudo-period LWSS/MWSS/HWSS guns (by Chris Cain, Adam P. Goucher, Entity Valkyrie, 2718281828, and Goldtiger997): the previous lowest known pseudo-period *WSS gun was p22.