Pivot
From Sudopedia, the Free Sudoku Reference Guide
Jump to navigationJump to searchA pivot or pivot cell is the central cell in a Wing pattern.
In an XY-Wing, it contains the X and Y candidates and has 2 pincers.
In an XYZ-Wing, it contains the X, Y and Z candidates and has 2 pincers.
In an WXYZ-Wing, it contains the W, X, Y and Z candidates and has 3 pincers.
