📘 Travel Size Sudoku - Mixed Level (400 Puzzles) 📘 If you’re looking for a sudoku book that’s easy to carry, enjoyable to solve, and packed with variety, this travel-friendly sudoku book for adults is the perfect fit. Inside, you’ll find 400 puzzles that gently blend simple warm-ups with more challenging grids - ideal for keeping your mind sharp wherever you go. Sudoku is one of the most effective brain-training activities available. It strengthens memory, improves concentration, boosts logical thinking, and provides a relaxing break from screens. Whether you’re commuting, traveling, or unwinding at home, this compact puzzle collection turns any spare moment into focused, enjoyable mental exercise. ✨ Inside You’ll Find: 400 Sudoku puzzles - Mixed difficulty levels throughout the book - A clear level badge on every puzzle - Smoothly varied layouts from page to page - Convenient 6×9 travel-friendly size - Solutions included for easy checking - Perfect for beginners, intermediates, and experienced solvers If you love sudoku books for adults that keep your mind active and your days more enjoyable, this mixed-level travel edition will become your go-to companion. Sharpen your mind, relax your thoughts, and enjoy 400 puzzles designed to fit your life anytime, anywhere.