Sunday, June 10, 2012

108 Heptominoes

Proposed by Solomon Golomb in Scientific American
Originally done on pen and non-graph paper in high school
Grouped by maximum number of pixels in a straight line
Enumerated by permuting remaining pixels alongside these spines
Turns & Flips of pieces don't count - these are all unique shapes.

And the last two (in red) were only discovered after checking off my 106 from a Wikipedian list.

Want to play a game?

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