Grandmaster Puzzles
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About GM Puzzles
About Thomas Snyder
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Intro to GMPuzzles
The Art of Sudoku
The Art of Puzzles
The Art of Puzzles 2
Colossal Cave Collection
Logic Puzzles 101
Classic Puzzle and Variations Series
The Puzzlemasters' Workshop
More Puzzle Collections
Even More Puzzle Collections
Update on Old Store
Mindcraft
For geniuses of all ages, turning magic into intelligence through games of reasoning and logic!