2-cell killer cage summing to 13
3 combinations.
- Always present
- No digit is forced into this cage.
- Never present
- 123
Valid digit combinations
- 49
- 58
- 67
How to use this in play
3 digit sets sum to 13 across 2 cells. Without other constraints this cage is loose; the value comes from pairing it with the cage's row, column, or box context — every digit ruled out elsewhere narrows which combinations remain.