Are you ready for brain entertainment even in Travel-time in-flight, in-ship, or in many situations The Travel Sudoku Puzzle Book contains 200 Sudoku puzzles in different difficulty levels with solutions. Each puzzle needs logic thinking to solve for all levels of ability. The main goal is to boost your brain capabilities. Thus they are ideal and essentials on journeys, holidays, and traveling. If you love Sudoku puzzles, this series of books will be the ideal companion for you. This activity book encourages you and also your kids to face the brain with some challenges, and you find that it's a powerful brain exercise.brstrongThe book features strongbrullibA worthy collection of 20000 Sudoku puzzles in 100 books each book contains 200 standard 9x9 grids together with relevant solutionsblili200 Puzzles for everyone with different Sudoku solving skillsbfor kids and adultsblilibFour difficulty levels from beginners to advancedb 50 Simple, 50 Easy, 50 Intermediate, and 50 Expertlili6 x 9-i