1000 Sudoku Puzzles Easy to very Hard, one of the best games in the world. This book is the best choice for your free time. What this book includes:1000 Sudoku Puzzles and Solutions6 levels of difficulty 6 Puzzle per page8.5 x 11 (inches) 21.59cm x 27.94cmBigger print than in most newspapers and magazinesHardcover In the book, you will find easy instruction for sudoku. This book is the best gift for your friends.Put your brain to think.