4-cell killer cage summing to 24
8 combinations.
- Always present
- No digit is forced into this cage.
- Never present
- Every digit can appear in this cage.
Valid digit combinations
- 1689
- 2589
- 2679
- 3489
- 3579
- 3678
- 4569
- 4578
How to use this in play
8 digit sets sum to 24 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.