Brain Games - Relax and Solve: Take a break, relax, and do a little puzzling. Sudoku puzzles are fun and engaging, while providing your brain a little stimulation! Product Details: Premium matte finish cover design Perfect for all writing mediums Portable format 5.0" x 8.0" (12.5cm x 20cm) pages Wide inner margins make it easy to tear out the puzzles for convenience. 100 total puzzles.