Put your Brain through it\'s paces with this Brain Gym Book of 500 Sudoku puzzles, containing 250 Hard difficulty and 250 Very hard. 8.5 by 11".. 178 pages, 4 Puzzles per page.
Challenge yourself to finish all the Puzzles without cheating This Book contains solutions to all the puzzles.
We exercise our bodies but our brains need a workout too Sudoku helps keep your Brain healthy and functioning well.
Put your Brain through it\'s paces with this Brain Gym Book of 500 Sudoku puzzles, containing 250 Hard difficulty and 250 Very hard