Kakuro: sum 9 in 3 cells
A sum of 9 in 3 cells can be made 3 ways.
| Combination | Digit set |
|---|---|
| 1 + 2 + 6 | 126 |
| 1 + 3 + 5 | 135 |
| 2 + 3 + 4 | 234 |
What this tells you
- There are 3 possibilities, so this clue alone does not decide the digits. Use crossing runs and any known cells to eliminate combinations.
- Digits that can never appear: 7, 8, 9. You can remove them from every cell of the run.
Related sums
The digits left out of each combination form a combination for the mirror run: sum 36 in 6 cells.
Sum 9 is also possible in 2 cells.