Puzzlecraft: How to Make Every Kind of Puzzle (Softcover + PDF) – Lone Shark Games
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Masyu 200 Puzzle With Solution Vol 1: 10x10 japanese logic puzzle for adults with solutions: 9798649616324: Masyu, Tewebook: Books - Amazon.com
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The Best Brain Exercise Puzzle Book for Adults: Large Print, Easy to Medium - Sudoku, Calcudoku, Killer Sudoku, Futoshiki, Thermo Sudoku, and Logic Puzzles: Fraas, Phil, Min, Patrick: 9798767805587: Amazon.com: Books