Kakuro: sum 25 in 4 cells
A sum of 25 in 4 cells can be made 6 ways.
| Combination | Digit set |
|---|---|
| 1 + 7 + 8 + 9 | 1789 |
| 2 + 6 + 8 + 9 | 2689 |
| 3 + 5 + 8 + 9 | 3589 |
| 3 + 6 + 7 + 9 | 3679 |
| 4 + 5 + 7 + 9 | 4579 |
| 4 + 6 + 7 + 8 | 4678 |
What this tells you
- There are 6 possibilities, so this clue alone does not decide the digits. Use crossing runs and any known cells to eliminate combinations.
- Every digit from 1 to 9 appears in at least one combination, so there is nothing to exclude outright.
Related sums
The digits left out of each combination form a combination for the mirror run: sum 20 in 5 cells (page).