Kakuro: sum 17 in 4 cells
A sum of 17 in 4 cells can be made 9 ways.
| Combination | Digit set |
|---|---|
| 1 + 2 + 5 + 9 | 1259 |
| 1 + 2 + 6 + 8 | 1268 |
| 1 + 3 + 4 + 9 | 1349 |
| 1 + 3 + 5 + 8 | 1358 |
| 1 + 3 + 6 + 7 | 1367 |
| 1 + 4 + 5 + 7 | 1457 |
| 2 + 3 + 4 + 8 | 2348 |
| 2 + 3 + 5 + 7 | 2357 |
| 2 + 4 + 5 + 6 | 2456 |
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 28 in 5 cells (page).