Kakuro
Cross-sum logic puzzles. No digits given — just sums.
Kakuro is a logic puzzle of sums. The board is a grid of black and white cells. Each black cell with a clue carries one or two sum targets — for the run of white cells across to its right, the run going down, or both.
Fill the white cells with digits 1-9 so each run sums to its target. Digits cannot repeat within a single run, and no starting digits are given — the sums alone pin the whole puzzle down.
Recommended for players who enjoy combinatorial reasoning. Every PuzzleProwl Kakuro has exactly one solution.
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