Kakuro: sum 16 in 4 cells
A sum of 16 in 4 cells can be made 8 ways.
| Combination | Digit set |
|---|---|
| 1 + 2 + 4 + 9 | 1249 |
| 1 + 2 + 5 + 8 | 1258 |
| 1 + 2 + 6 + 7 | 1267 |
| 1 + 3 + 4 + 8 | 1348 |
| 1 + 3 + 5 + 7 | 1357 |
| 1 + 4 + 5 + 6 | 1456 |
| 2 + 3 + 4 + 7 | 2347 |
| 2 + 3 + 5 + 6 | 2356 |
What this tells you
- There are 8 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 29 in 5 cells (page).