A number crossword. Fill every run of white cells with digits 1 to 9 that add up to the clue shown in the black cell beside it — and never repeat a digit within the same run.
Rules
Click a white cell to select it, then click a digit on the pad below (or type it) to fill it in.
Each run of consecutive white cells must sum to the clue number shown in the black triangle beside it.
No digit may repeat within a single run, whether the run reads across or down.
Click ✕ or press Backspace to clear a selected cell; red means the current digits in that run can't be right.
Tips
A 2-cell run summing to 3 can only be 1+2, and one summing to 17 can only be 8+9 — runs with very low or very high clues are usually forced, so solve those first.