Kakuro Combinations
Learning to solve kakuro quickly means learning patterns of numbers, and knowing the valid combinations that can constitute a given number in a specified number of individual cells.
There isn't a lot of certainty in kakuro, but when there is, it's as well to know about it. Here are the certain combinations in kakuro for two, three and four cell length answers. Note they can be expressed more than one way on the grid, e.g. (a, b) or (b, a) on the grid for two cell combos. The others you can work out yourself as a fun exercise!
| Number | Cells | Valid Combination |
| 3 | 2 | 1, 2 |
| 4 | 2 | 1, 3 |
| 16 | 2 | 7, 9 |
| 17 | 2 | 8, 9 |
| 6 | 3 | 1, 2, 3 |
| 7 | 3 | 1, 2, 4 |
| 23 | 3 | 6, 8, 9 |
| 24 | 3 | 7, 8, 9 |
| 10 | 4 | 1, 2, 3, 4 |
| 11 | 4 | 1, 2, 3, 5 |
| 29 | 4 | 5, 7, 8, 9 |
| 30 | 4 | 6, 7, 8, 9 |