X66
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| x66 | |||||||
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| Pattern type | Spaceship | ||||||
|---|---|---|---|---|---|---|---|
| Number of cells | 34 | ||||||
| Bounding box | 9 × 11 | ||||||
| Direction | Orthogonal | ||||||
| Period | 4 | ||||||
| Mod | Unknown | ||||||
| Speed | c/2 | Unknown | ||||||
| Heat | 31 | ||||||
| Discovered by | Hartmut Holzwart | ||||||
| Year of discovery | 1992 | ||||||
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x66 is a period 4 spaceship with speed c/2 that was found by Hartmut Holzwart in July 1992. One of the symmetric halves can alternatively be escorted by a heavyweight spaceship. Its name refers to the fact that every cell (alive or dead) has at most 6 live neighbours (in contrast to spaceships based on lightweight spaceships, middleweight spaceships, or heavyweight spaceships). In fact, this spaceship was found via a search with this restriction. From this follows that the spaceship is stable also in Life-like rules allowing birth or survival for a cell with 7 or 8 neighbors.
See also
External links
- x66 at the Life Lexicon