Extreme Sudoku Book Four: 100 Hard to Solve 25 X 25 Sudoku Puzzles with Solutions, Paperback/Alexander Ross

Descriere

Description100 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.