4-cell Kakuro run summing to 16
8 combinations.
- Always present
- No digit is forced into this run.
- Never present
- Every digit can appear in this run.
Valid digit combinations
- 1249
- 1258
- 1267
- 1348
- 1357
- 1456
- 2347
- 2356
How to use this in play
8 digit sets sum to 16 across 4 cells. The run on its own is permissive; its constraints become useful when intersected with the perpendicular runs at each of its cells.