Long⁴ canoe

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Long4 canoe
x = 9, y = 9, rule = B3/S23 7b2o$6bobo$5bo$4bo$3bo$2bo$bo$o$2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 3 ZOOM 21 HEIGHT 400 SUPPRESS ]]
Pattern type Strict still life
Number of cells 12
Bounding box 9 × 9
Frequency class 33.7
Discovered by Unknown
Year of discovery Unknown

Long4 canoe (or remarkably long canoe) is a 12-cell still life, the long^4 extension of canoe.

Construction

Surprisingly, the long4 canoe has a 4-glider synthesis,[1] which is unusual for an object that is this rare.

x = 43, y = 25, rule = B3/S23 bo10bo21b2o$2bo9bobo19bobo$3o9b2o23bo$38bo$8b2o29bo$7b2o31bo$9bo31bo$ 42bo$41b2o14$37bo$36b2o$36bobo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ HEIGHT 400 THEME Book ZOOM 10 X 0 Y 0 AUTOSTART GPS 12 T 0 PAUSE 3 T 59 PAUSE 1 T 60 PAUSE 1 T 61 PAUSE 1 T 62 PAUSE 1 T 69 PAUSE 2 LOOP 70 ]]
A 4G synthesis[1][2]
(click above to open LifeViewer)
x = 38, y = 22, rule = B3/S23 4bo$2bobo$3b2o4$29b2o$15bo13bobo$obo11bo17bo$b2o11b3o16bo$bo32bo$35bo$ 36bo$37bo$36b2o2$13b2o$13bobo$13bo$21b3o$21bo$22bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THEME Book ZOOM 10 X 0 Y 0 AUTOSTART GPS 12 T 0 PAUSE 3 T 8 PAUSE 1 T 18 PAUSE 1 T 25 PAUSE 2 LOOP 26 ]]
A 5G synthesis[3]
(click above to open LifeViewer)
x = 38, y = 27, rule = B3/S23 10bo$10bobo$10b2o2$3bo$bobo$2b2o3$8bo20b2o$9bo4bo14bobo$7b3o4bobo15bo$ 14b2o17bo$34bo$25bo9bo$24bo11bo$11b2o11b3o10bo$11bobo22b2o$11bo5$20b3o $2o18bo$b2o18bo$o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ HEIGHT 400 THEME Book ZOOM 10 X 0 Y 0 AUTOSTART GPS 12 T 0 PAUSE 3 T 10 PAUSE 1 T 21 PAUSE 1 T 68 PAUSE 1 T 93 PAUSE 2 LOOP 94 ]]
A 8G synthesis[3]
(click above to open LifeViewer)

Occurrence

Among still lifes with 12 cells, this is the 104th most common still life according to Catagolue.

There are no occurrences of this still life in final patterns of collisions in octohash, octo3obj or octo3g databases.

See also

References

  1. 1.0 1.1 Simon Ekström (August 16, 2017). Re: 4 glider syntheses (discussion thread) at the ConwayLife.com forums
  2. xs12_xg84213zca1 (archived copy)
  3. 3.0 3.1 The 121 twelve-bit still-lifes at Mark D. Niemiec's Life Page (download pattern file: 12/12-31.rle)

External links