ExpertUsefulness: Low
XYZ-Wing
An XY-Wing whose pivot carries three candidates {X,Y,Z}. Because the pivot could also be Z, eliminations apply only to cells seen by all three cells.
✕
A three-candidate pivot tightens the net: only shared peers lose Z.
patterneliminatesolved
How to spot it
- 1Find a pivot with three candidates {X,Y,Z}.
- 2Find pincers {X,Z} and {Y,Z} the pivot sees.
- 3Remove Z from cells seen by the pivot and both pincers.
When to use
As an extension once XY-Wings feel natural.
Common mistake
Forgetting the target must also be a peer of the pivot, not just the pincers.