Friday 9 March 2012

MATHS X-TRA..

Polyiamond Compatibility
George Sicherman: I spent this morning working on a new computer program.  It promptly rewarded me with the attached compatibility figure for the J pentiamond and X hexiamond. Aren't computers wonderful?  I'm so glad I wasn't born 100 years ago!
j-butterfly
Here is a polyomino that can be tiled by any of seven pentominoes. It has 48 tiles, which improves on Mike Reid's solution with 90 at Jorge L. Mireles's site:
This figure can be tiled by 15 different heptominoes. The old record was 14 by Robert Reid. You can see it at Jorge Luis Mireles's site:


Done by: Sayidatul Sakeena Ahmad.

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