XYZ-Wing
Expert
Used by Smart Hint
Like XY-Wing, but the pivot keeps a third candidate, which tightens where the elimination applies.
- Cells that establish the pattern
- Where the conclusion lands
- Candidate ruled out
How it works
- A1 is a tri-value pivot with candidates {1, 2, 3}. B1 shares its row and two of those candidates {1, 3}; A2 shares its column and {2, 3}.
- Because the pivot itself could still be 3, only cells that see all three — pivot, B1, and A2 — are safe to clear. B2 sees all three, so its 3 can be eliminated.