Cheshire cat

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Cheshire cat
Cheshire cat image
Pattern type Miscellaneous
Number of cells 18
Bounding box 6×6
Discovered by C. R. Tompkins
Year of discovery 1970

Cheshire cat is a block predecessor created by C. R. Tompkins that appeared both in Scientific American and in Winning Ways. It is named for the fact that it evolves into a grin in six generations and a block (identified with a pawprint) in seven.

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