Addicted to Sudoku? With 200 puzzles in this Geisha Pocket Series book by Katsumi this is the perfect book to take everywhere with you. Book 3 in this series contains all hard puzzles. Two puzzles per page gives plenty of space for notes and all the solutions are printed at the end of the book. Turn off the television and burn up some brain power instead! 5.5" wide by 8.5" high.