3-cell killer cage summing to 18
7 combinations.
- Always present
- No digit is forced into this cage.
- Never present
- Every digit can appear in this cage.
Valid digit combinations
- 189
- 279
- 369
- 378
- 459
- 468
- 567
How to use this in play
7 digit sets sum to 18 across 3 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.