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Amazon | Futoshiki Puzzle Book: 500 Medium 5x5 Grid Japanese Math Puzzles With Unique Solution, More Less Sudoku Series - Volume 02 | Tahlia, Suzanna | Puzzles
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Futoshiki Puzzles Brain Game: The perfect mix grid easy 4x4 puzzles challenging logic number comparison sudoku you entertained for weeks. After solving all the puzzle this book (Series 20) : Elizatriya, Tiyada:
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