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Extremely Hard Sudoku Puzzles: 100 Sudoku Puzzles / Very Small Size / Fits in Handbags / Includes Solutions / Suitable for Sudoku Experts

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Sudoku puzzles are handcrafted by experts who regard the solution PROCESS as even more critical than the results. Additional features include 3 skill levels, ...

Expert sudoku level is suitable for professionals, who possess an excellent ... Hardest Sudoku puzzle is a game for experienced Sudoku players with a very high ... numbers are shown in the Sudoku square, which consists of 9 small squares, ... Sudoku is one of the world's most popular puzzle games, but even though it's a ... Good at Sudoku? Here's some you'll never complete

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Cunning Techniques for Extremely Difficult Sudoku Puzzles ...