Fill the grid so every row, column, and 3×3 box contains the digits 1–9 exactly once.
Kakuro is a number crossword puzzle. You fill in empty cells with digits 1–9 so that each horizontal or vertical "run" of cells adds up to the clue number shown in the dark cell beside it. The catch: no digit may repeat within the same run. Every clue has exactly one correct combination, and where runs cross, the shared cell must satisfy both clues at once.