Space rake: Difference between revisions
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|p = 20 | |p = 20 | ||
|s = c/2 | |s = c/2 | ||
|rulemin = B3/S23 | |||
|rulemax = B38/S238 | |||
|rulespecial = [[Conway's Game of Life|Conway Life]] | |||
|isorulemin = B3-k/S23-y | |||
|isorulemax = B34e5ck6cn8/S234ce5ekr6i8 | |||
|plaintext = true | |plaintext = true | ||
|rle = true | |rle = true | ||
Revision as of 23:39, 26 November 2020
| Space rake | |||||||||
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| Pattern type | Rake Puffer | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Number of cells | 65 | ||||||||
| Bounding box | 22 × 19 | ||||||||
| Direction | Orthogonal | ||||||||
| Period | 20 | ||||||||
| Speed | c/2 | ||||||||
| Discovered by | Unknown | ||||||||
| Year of discovery | Unknown | ||||||||
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Space rake is a period 20 forward glider rake constructed around 1971, probably by Bill Gosper; it was the first known rake. It consists of an ecologist with a lightweight spaceship added to turn its dying debris into gliders.
Note that if the back lightweight spaceship is flipped vertically and moved down by one cell, then this becomes a period 20 backward glider rake, as shown below.[1]
Image gallery
 RLE: here |
References
- ↑ Alan Hensel's lifep.zip pattern collection.
External links
- Space rake at the Life Lexicon