Welcome to sudoku games In this book 240 Sudoku Puzzles (Medium to Hard ) Volume 1 is for you! 240 unique sudoku puzzles Lots of puzzles: 120 Medium, 120 Hard Includes answers for every puzzle Sudoku is useful? Practice patterns, processes, systems, and rational thinking. Observation and analytical skills. Training of sense of space and ranking Including, meditation and the development of short-term memory Sudoku games, this booklet is designed to help increase their brain development. Increase endurance and allow you to concentrate better practice in regard to the use of the eyes. Books, games, sudoku puzzles, this book, all are 240 game puzzles There are answers to all the puzzles. Perfect for gifts to friends or people you love. Are you ready to find the challenge yourself to find this sudoku puzzle games or if with it buy now?