Practise: XYZ-Wing
Start with the marked three-candidate hinge: which digit do both two-candidate wings share?
The prepared notes show one three-candidate hinge and two wings. Find their shared 7, then look only at notes that see the hinge and both wings; do not place a digit yet.
Example 1 of 4
Your turn first
Your turn first
Find the three-candidate hinge. Its two two-candidate wings each use two hinge digits and both include 7. Which prepared 7-notes see all three pattern cells?
Remember
An XYZ-Wing has a three-candidate hinge and two two-candidate wings. All three cells share one digit. At least one must contain it, so remove it only from cells that see the hinge and both wings.
Put it to use
Where you will meet it
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