Canoe

Canoe
x = 5, y = 5, rule = B3/S23 3b2o$4bo$3bo$obo$2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C Still life
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Pattern type	Strict still life
Number of cells	8
Bounding box	5×5
Frequency class	16.5
Discovered by	Unknown
Year of discovery	1971
Rules Outer-totalistic rules B/S23 – B35678/S012345678 Important rules Conway Life, HighLife # of rules 212 = 4096 Isotropic rules B/S2aen3n – B2ikn34-r5678/S012345678
Glider synthesis Fewest gliders 4 Catagolue-generated RLE canoe_synth.rle Uploaded synthesis RLE canoe_synth.rle
Pattern files Plaintext canoe.cells RLE canoe.rle
Identifiers apgcode xs8_312ko Pentadecathlon ID 8.4

Canoe (or cis-snake or sinking ship) is an 8-cell still life. It was found in 1971.

This still life can be interpreted as two mutually stabilising hooks. An alternate arrangement, which could be seen as the trans version of the canoe, results in the very long snake.

The canoe is tied with the long ship for the smallest still life that cannot be cleanly destroyed with one glider.

Commonness

Canoe is the thirty-first most common still life in Achim Flammenkamp's census, being less common than mirrored table but more common than cis-mirrored bun. It is also the fortieth most common object on Adam P. Goucher's Catagolue.

It is the seventh most common of the nine 8-bit still lifes. In D2_x diagonal symmetry, it is 8.5 times more common, improving its ranking to fifth out of nine.

Glider synthesis

All strict still lifes with a population of 20 or fewer cells, as well as all oscillators and spaceships with 16 or fewer cells, are known to be glider-constructible. A glider synthesis of this object can be found in the infobox to the right.

Extensibility

Canoe can be infinitely extended, as illustrated by the following:

Long canoe	Very long canoe	Long^3 canoe	Long^4 canoe

External links

• Canoe at the Life Lexicon

• Canoe at Adam P. Goucher's Catagolue

• The 9 eight-bit still-lifes at Mark D. Niemiec's Life Page