Map" puzzle from the Simon Tatham's Portable Puzzle Collection, implementation by Chris Boyle. Colour all the regions in one of the four colours so no neighbouring regions (except if they are only
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Simon Tatham's Portable Puzzle Collection (Linux) - Download
Simon Tatham's Portable Puzzle Collection - Games for the Brain - OSS Blog
Simon Tatham's Portable Puzzle Collection (Linux) - Download
Puzzle game collection "Simon Tatham's Portable Puzzle Collection" which runs on all-you-can-eaten Windows / Mac / Unix for free by playing free of charge - GIGAZINE
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