Extreme Sudoku Three: 100 Hard To Solve 25 x 25 Sudoku Puzzles With Solutions by
16,35 €
100 very hard 25 number Sudoku puzzles. One puzzle on a page Using a 25 x 25 square grid. These puzzles are for expert Sudoku players. The solutions are in the back of the book. This is a Sudoku book for adults.
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