This is a new and perfect Sudoku Puzzle Book for children.Taking a stab at Sudoku is another working-memory training activity. It's like chess - while you're making a move, you have to think three or four steps ahead to your next move and that's good exercise for the brain.
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This is a new and perfect Sudoku Puzzle Book for children.Taking a stab at Sudoku is another working-memory training activity. It's like chess - while you're making a move, you have to think three or four steps ahead to your next move and that's good exercise for the brain.
Read Less