Long⁹ snake
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| Long9 snake | |||||||||
| View static image | |||||||||
| Pattern type | Strict still life | ||||||||
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| Number of cells | 15 | ||||||||
| Bounding box | 11 × 13 | ||||||||
| Static symmetry | .c (C2_1) | ||||||||
| Discovered by | Unknown | ||||||||
| Year of discovery | Unknown | ||||||||
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Long9 snake (or ludicrously long snake) is a 15-cell still life, an extension of snake.
Construction
This still life is known to be constructible with 9 gliders.[1]
| A 9G synthesis[2] (click above to open LifeViewer) |
| A 4G conversion from long7 snake[3] (click above to open LifeViewer) |
| A 6G conversion from long3 canoe[4] (click above to open LifeViewer) |
Occurrence
Among the 1353 still lifes with 15 cells, this was the last to appear in an asymmetric soup, which was found by the ASA-X supercomputer on January 18, 2025.[5][6][7]
References
- ↑ xs15_y3g853zwg8421z65 at Adam P. Goucher's Catagolue
- ↑ xs15_y3g853zwg8421z65 (archived copy)
- ↑ Life Fifteen-Bit Still-Lifes at Mark D. Niemiec's Life Page (download pattern file: 15/15-1352.rle)
- ↑ xs15_y3g853zwg8421z65 (archived copy)
- ↑ xs15_y3g853zwg8421z65
- ↑ Re: Small Unnatural Objects Watchlist (discussion thread) at the ConwayLife.com forums
- ↑ Statistics at Adam P. Goucher's Catagolue