Do you like to use your spare moments indulging in sudoku? If so, Sudoku Challenge will be your perfect take-anywhere companion. With 240 puzzles guaranteed to sharpen your mind and keep you thoroughly entertained; this collection is a real treat for anyone who loves numbers. Are you ready to rise to the ultimate brain-training challenge? The unique thing about this puzzle book is that the puzzles all fit within a theme - they are all related to Sudoku...
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