5-cell Kakuro run summing to 31
5 combinations.
- Always present
- 9
- Never present
- Every digit can appear in this run.
Valid digit combinations
- 16789
- 25789
- 34789
- 35689
- 45679
How to use this in play
5 digit sets sum to 31 across 5 cells. The run on its own is permissive; its constraints become useful when intersected with the perpendicular runs at each of its cells.
Locked digits: 9. This digit appears in every valid combination, so it must occupy one cell of the run; useful when a perpendicular run rules it out of a candidate cell.