Focus your mind and increase problem-solving skills with these collections of 250 Sudoku puzzles.

With over 250 puzzles to complete, this travel-friendly book will give you some enjoyable, screen-free fun!

You’ll enhance your skills as you progress through - challenge yourself to finish them all!

• Compact format perfect for travel or everyday use

• Series includes something for everyone - word searches, mixed puzzles or sudoku!

• Develop problem-solving skills and increase concentration while having fun.