You can enjoy hours of fun with 100 sudoku challenges! This is the perfect sudoku book for an expert. You can use this for hours of enjoyment for relieving stress, weariness, or anxiety. Sudoku books are great for brain exercises or to use during your lunch breaks. Details Dimensions: 8.5 x 11 100 Sudoku Puzzles Answers in the back 126 pages total High-Quality Paper Soft Matte Cover