4-cell killer cage summing to 17
9 combinations.
- Always present
- No digit is forced into this cage.
- Never present
- Every digit can appear in this cage.
Valid digit combinations
- 1259
- 1268
- 1349
- 1358
- 1367
- 1457
- 2348
- 2357
- 2456
How to use this in play
9 digit sets sum to 17 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.