Kakuro: sum 23 in 4 cells
A sum of 23 in 4 cells can be made 9 ways.
| Combination | Digit set |
|---|---|
| 1 + 5 + 8 + 9 | 1589 |
| 1 + 6 + 7 + 9 | 1679 |
| 2 + 4 + 8 + 9 | 2489 |
| 2 + 5 + 7 + 9 | 2579 |
| 2 + 6 + 7 + 8 | 2678 |
| 3 + 4 + 7 + 9 | 3479 |
| 3 + 5 + 6 + 9 | 3569 |
| 3 + 5 + 7 + 8 | 3578 |
| 4 + 5 + 6 + 8 | 4568 |
What this tells you
- There are 9 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 22 in 5 cells (page).