Canada Grey

This article is about the extensible greyship. For the glider tagalong, see Canada goose.

Canada Grey
x = 41, y = 28, rule = B3/S23 16b3o3b3o$15bo2bo3bo2bo$18bo3bo$14bo3bo3bo3bo$14bo3bo3bo3bo$18bo3bo$18bo3bo2$ 16b3o3b3o$17bo5bo$17b7o$16bo7bo$15b11o$14bo11bo$13b15o$12bo15bo$11b19o$10bo 19bo$3o6b23o6b3o$o2bo4bo23bo4bo2bo$o6b27o6bo$o3bobo11bobobo11bobo3bo$o5b7obo 11bob7o5bo$o4b2o3bobobo11bobobo3b2o4bo$bo3bo29bo3bo$5bo29bo$3b3o29b3o$4b2o29b 2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ THUMBSIZE 2 ZOOM 12 HEIGHT 500 GPS 4 TRACK 0/4 -2/4 LOOP 4 ]]
View static image
Pattern type	Spaceship
Number of cells	211
Bounding box	45 × 29
Direction	Orthogonal
Period	4 (mod: 4)
Speed	c/2 | 2c/4
Heat	131.5
Kinetic symmetry	Unspecified
Discovered by	Unknown
Year of discovery	Unknown
Rules Outer-totalistic rules B3/S23 – B38/S23 # of rules 21 = 2 Isotropic rules B3-cky/S2-c3-cy – B34ejz5ckq6cen7e8/S234cekqy5ckq6cei7e
Glider synthesis Fewest gliders 418† Catagolue-generated RLE synthesis †Can be constructed with 15 gliders using the reverse caber tosser universal constructor.
Pattern files Plaintext canadagrey.cells RLE canadagrey.rle
Identifiers apgcode xq4_yao211vxv112ozyc8obxbo8zy9gokmlllllllmkogzo88gy0g8cabaaaaaaaaaaaaaaabac8gy0g88ozfgw2oe555d5d1d11131313111d1d5d555eo2wgfzx267yp762

Canada Grey is a c/2 orthogonal greyship, named for its synthesis by Goldtiger997 on Canada Day 2021. It was the first greyship to be synthesized, at a total of 753 gliders. It is also the first greyship in an unbounded series of increasingly large ships, all of which can be synthesised with the same basic toolkit. The original recipe for the next greyship in the series contained well over 1,300 gliders, which has since been reduced considerably. On October 13, Goldtiger997 published a script which automatically synthesizes an arbitrarily-large greyship, with the total glider cost increasing roughly quadratically.

External links

• Canada Grey at Adam P. Goucher's Catagolue