Difference between revisions of "Spider"
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|isorulemin = B3/S23-cy | |isorulemin = B3/S23-cy | ||
|isorulemax = B34cekq5e6c8/S234ceq5-ciqr6acn7c8 | |isorulemax = B34cekq5e6c8/S234ceq5-ciqr6acn7c8 | ||
|synthesis = | |synthesis = 344 | ||
|synthesisRLE = true | |synthesisRLE = true | ||
|plaintext = true | |plaintext = true |
Revision as of 11:12, 17 December 2019
Spider | |||||||||||
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Pattern type | Spaceship | ||||||||||
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Number of cells | 58 | ||||||||||
Bounding box | 27 × 8 | ||||||||||
Direction | Orthogonal | ||||||||||
Period | 5 | ||||||||||
Mod | 5 | ||||||||||
Speed | c/5 | c/5 | ||||||||||
Heat | 53.6 | ||||||||||
Discovered by | David Bell | ||||||||||
Year of discovery | 1997 | ||||||||||
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Spider is an orthogonal c/5 spaceship that was discovered by David Bell in April 1997. It is the smallest known c/5 orthogonal spaceship. Its side sparks have proven to be very useful in constructing puffers and rakes.
On March 7, 2019, Martin Grant found a 601-glider synthesis of spider, making it the first c/5 orthogonal spaceship to be synthesized.[1] Optimizations have since been found to reduce the glider count.[2][3]
See also
References
- ↑ Martin Grant (March 7, 2019). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums
- ↑ Jeremy Tan (May 18, 2019). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums
- ↑ Goldtiger997 (December 9, 2019). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums
External links
- Spider at the Life Lexicon
- The Spider (glider 18216) at David Eppstein's Glider Database
- 58P5H1V0.1 at Heinrich Koenig's Game of Life Object Catalogs
Categories:
- Patterns
- Spaceships with 58 cells
- Periodic objects with minimum population 58
- Patterns with 58 cells
- Patterns found by David Bell
- Patterns found in 1997
- Patterns that can be constructed with between 300 and 399 gliders
- Spaceships
- Spaceships with period 5
- Orthogonal spaceships
- Spaceships with speed c/5
- Spaceships with unsimplified speed c/5
- Spaceships with heat 53
- Spaceships with mod 5
- Patterns with bilateral orthogonal symmetry