Kids' Kakuro

Also known as "cross sums," this new Japanese puzzle sensation is rivaling the popularity of sudoku. Kakuro helps sharpen math skills, and children will find these brainteasers both absorbing and entertaining. Designed especially for kids, the 48 puzzles are highlighted by whimsical illustrations.

Kakuro is similar to both sudoku and traditional crossword puzzles. Like crosswords, kakuro presents clues both across and down. Numbers filling in the vacant squares must add up to the given clues. Like sudoku, kakuro does not allow you to use the same number in a row or column, although you can repeat a number in a row that is separated by a clue. Solutions appear at the back of the book.