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by Puzzle Addicts (Author), Kevin Birch (Author)
Yet another challenging collection of 175 Sudoku variation puzzles that cover our medium difficulty range of Sudoku puzzles categories! - Once you try these, your regular 9 x 9 Sudoku puzzles will become tame - guaranteed!
You'll get 25 each of Suduko Twins, Triathlon (A & B - our favorites), Marathon, Samurai, 12 x 12s and 16x16 - thats 175 Suduko variants and variations - and their solutions!