This programs helps you solve existing KaKuRo puzzles as well as create new ones. KaKuRo (or Cross Sums) is a puzzle that is solved much like a crossword puzzle, using digits instead of letters. Where an entry in a regular crossword may form a word, the digits in a Cross Sums entry add up to a sum. The sums, or clues, are embedded in a shaded square of the puzzle. The top right number is the across sum while the bottom right number is a down sum. Only the digits 1 through 9 are used and no digit may appear more than once in any sum. The object of the puzzle is to insert a digit from 1 to 9 inclusive into each non-shaded cell such that the sum of the numbers in each entry matches the sum associated with it and that no digit is duplicated in any entry.
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