Broken snake

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Broken snake
x = 3, y = 7, rule = B3/S23 b2o$2bo$bo$b2o$2bo$o$2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 3 ZOOM 21 HEIGHT 400 SUPPRESS ]] #C [[ ZOOM 39 ]]
Pattern type Strict still life
Number of cells 10
Bounding box 7 × 3
Frequency class 19.8
Discovered by Unknown
Year of discovery 1972

Broken snake (or carrier siamese snake) is a 10-cell still life that consists of an aircraft carrier and a snake attached together.


See also: List of common still lifes

Broken snake is the fifty-fourth most common still life in Achim Flammenkamp's census, being less common than mirrored dock but more common than trans-bookend and bun.[1]

It is the 55th most common still life on Adam P. Goucher's Catagolue, being less common than prodigal but more common than trans-bookend and bun. It is the 8th most common still life with 10 cells, being less common than prodigal but more common than boat with long tail.[2]

Broken snake typically forms via a century hitting a block or other object in the same position. (The upper block is there to prevent a glider from crashing onto the broken snake, but many other perturbations work.)

x = 14, y = 17, rule = B3/S23 2o$2o5$12b2o$12b2o6$4b3o$4bo$4b2obo$6b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ GPS 20 THUMBSIZE 2 AUTOSTART T 0 PAUSE 3 T 94 PAUSE 1 GPS 40 LOOP 292 ]]
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The broken snake is 40% rarer in an 8 × 8 soup and 20% rarer in a 10 × 10 soup compared to Catagolue's typical 16 × 16 soups. In infinite soups, it is 24% more common. This is likely because the base century+object collision (shown above) only forms the broken snake temporarily, and a larger soup allows for other cells to interfere and allow the broken snake to survive.

Glider synthesis

All strict still lifes with a population of 21 or fewer cells, all oscillators with 16 or fewer cells, and all spaceships with 31 or fewer cells are known to be glider-constructible. A glider synthesis of this object can be found in the infobox to the right.

See also


  1. Achim Flammenkamp (September 7, 2004). "Most seen natural occurring ash objects in Game of Life". Retrieved on November 8, 2009.
  2. Adam P. Goucher. "Statistics". Catagolue. Retrieved on May 5, 2023.

External links