450 Sudoku Puzzles: With Solutions, (Paperback)

Sudoku is a logic-based, combinatorial number-placement puzzle. The objective is to fill a 9×9 grid with digits so that each column, each row, and each of the nine 3×3 subgrids that compose the grid contain all of the digits from 1 to 9. This version is great for intermediate players and includes solutions on the reverse of each page.