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.
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.