4-cell killer cage summing to 25
6 combinations.
- Always present
- No digit is forced into this cage.
- Never present
- Every digit can appear in this cage.
Valid digit combinations
- 1789
- 2689
- 3589
- 3679
- 4579
- 4678
How to use this in play
6 digit sets sum to 25 across 4 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.