strongSudoku is a game of logic, not guessing!strongpbrppTraining your brain with 350 puzzles will keep you entertained and focused.pp By using your logic to complete the puzzles, you mind gets sharpened.ppThere are different levels of difficulty throughout the book. Start easy and keep challenging yourself to finish. pp ppThe book also contains the solutions, conveniently located at the end of each difficulty level section, in case you get stuck.pp ppstrongPerfect gift for travellers to enjoy on the journey, and all brain games enthusiasts!strongp pstrongProduct Specification strongpp270 pages pp3 Levels of difficulty polli strong150 Easystronglilistrong 100 Mediumstronglili strong100 HardstrongliolstrongPerfect 5.5x8.5 inch size to take anywhere!strongpbrp