Benefits of playing Sudoku!

• Improves memory and logic.
• Stimulates the mind.
• Reduces the chances of Alzheimer's disease by keeping the brain active.
• Helps in learning to do things quickly.
• Increases concentration.

This is an excellent starter book of puzzles, the right choice for a child's first introduction to sudoku, good activity that reinforces logic and problem-solving, this book is perfect for road trips or anytime you need some peace and quiet without resorting to turning on the TV.4 Levels Difficulty: Easy Sudoku, Medium Sudoku, Hard Sudoku. Nice gift for sudoku lovers!