"Sharpen your concentration and reasoning skills with this addictive, logic-based number game. The 200 sudoku puzzles in this book build in difficulty levels—from beginner through novice to intermediate—and are perfect for puzzling on the go. You'll also find tips on sudoku strategy inside."
Dimensions: 0.5" L x 5" W x 7" H / 1.25cm L x 12.7cm W x 17.8cm H
200 puzzles, easy to medium.