Cribbage

Cribbage
x = 32, y = 21, rule = B3/S23 4b2o$4bo$b2obo10bo$bo2b2o9b3o$3bo2bo11bo$bob3obo9b2o$obo4bo$o2b3o15bo$b2o2bo5bo8b2o7b2o$3b2o6bo16bobo$3bo7bo8bo7bo$bobo16bo6b2o$b2o7b2o8bo5bo2b2o$10bo15b3o2bo$24bo4bobo$13b2o9bob3obo$13bo11bo2bo$14b3o9b2o2bo$16bo10bob2o$27bo$26b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ ZOOM 15 THUMBSIZE 3 HEIGHT 400 GPS 8 LOOP 19 ]]
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Pattern type	Oscillator
Number of cells	92
Bounding box	32 × 21
Period	19 (mod: 19)
Heat	33.5
Volatility	0.72 | 0.72
Kinetic symmetry	Unspecified
Discovered by	Mitchell Riley
Year of discovery	2023
Rules Outer-totalistic rules B3/S23 – B38/S238 # of rules 22 = 4 Isotropic rules B3/S23 – B34ce6cen8/S234cz5ekn6ein8
Glider synthesis Fewest gliders (cheapest variant) 69† Catagolue-generated RLE (cheapest variant) synthesis †Can be constructed with 15 gliders using the reverse caber tosser universal constructor.
Pattern files Plaintext cribbage.cells RLE cribbage.rle
Identifiers apgcode (canonical) xp19_0c4gf9gy4c88gz69alld03xoy11108cy2g8oz0643y2c5y47xg0cabk4ozy9354cy3125t38dzym11 apgcode (cheapest variant) xp19_ybggoy46is0c453zwggy3og032y1gx61qabkk8z0g98nkoy1ey4boy1178czw1h6qa43y3o8a6z65110123

Cribbage, or Riley's p19, is a period-19 oscillator found by Mitchell Riley on July 14, 2023 using CatForce, and is the first period-19 oscillator to be discovered.

On the day of its discovery, iNoMed discovered a pair of successive stator reductions over the original form (first to 96 cells, then to 94), which was subsequently reduced by May13 to a 92-cell form. Each reduction was made by replacing its stators with smaller components.

x = 34, y = 21, rule = B3/S23 29bo$28bobo$17bo10bobo$15b3o9b2o2b2o$14bo11bo2bobo$14b2o9bob3obo$25bo6b2o$11bo15b4obo$3bo7b2o8bo5bo2bobo$2bobo16bo6b2o2b2o$2bobo7bo8bo7bobo$2o2b2o6bo16bobo$bobo2bo5bo8b2o7bo$bob4o15bo$2o6bo$2bob3obo9b2o$2bobo2bo11bo$b2o2b2o9b3o$3bobo10bo$3bobo$4bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 ]]

The original form, as initially discovered (click above to open LifeViewer)

x = 38, y = 13, rule = B3/S23 3bo8b2o8b2o8b2o$2bobo7bobo7bobo7bobo$2bobo9bo9bo9bo$2o2b2o8b2o5bo2b2o8b2o$bobo3bo4b2o3bo3b3o3bo4b2o3bo$bob5o3bo2b4o6b4o3bo2b4o$2o10b2o9bo7bobo$2bob4o6b4o4bob4o4bob4o$2bobo2bo6bo2bo4bobo2bo6bo2bo$b2o2b2o8b2o4b2o2b2o5bo2b2o$3bobo4b2obobo7bobo6b2obo$3bobo4bob2o2bo6bobo9bo$4bo10b2o7bo10b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 ]]

The stator variants, from the discovery (left), iNoMed's reductions and the current form (right). (click above to open LifeViewer)

Cribbage's sparks are strong enough for LCMs but not hasslers.

The name "cribbage" comes from the card game, where 19 is a significant number and somewhat of a meme in the game, being the smallest number of points that is impossible to get in a single round.

External links

• Cribbage at Adam P. Goucher's Catagolue