3-cell killer cage summing to 13
7 combinations.
- Always present
- No digit is forced into this cage.
- Never present
- Every digit can appear in this cage.
Valid digit combinations
- 139
- 148
- 157
- 238
- 247
- 256
- 346
How to use this in play
7 digit sets sum to 13 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.