Popular puzzle game in ans easy version for kids age 612 or beginners With this book your child will developlogical thinking skills and will have a great time doing it The size of the book is perfect even for travel or spend time without turning on the TV Combine learning with funBENEFITS:A great way to learn logical thinking, concentration and memory exercises trough play from an early age Useful time spent without electronicsThe perfect book to start your sudoku adventureThe number game will develop math skills perfectly and work in imagination, concentration and inventivenessSize 8,5x11Glossy soft cover150 pages