Game technique · Sudoku
XYZ-Wing in Sudoku
A three-candidate pivot sees two wings whose candidates each include one pivot digit and a shared digit.
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A three-candidate pivot sees two wings whose candidates each include one pivot digit and a shared digit.
Example
One of the three cells must contain the shared digit, so eliminate it from cells that see all three.
Key point
A three-candidate pivot sees two wings whose candidates each include one pivot digit and a shared digit.