WXYZ-Wing
Consider a four-candidate pivot and its wings to find eliminations valid wherever their shared digit appears among the four cells.
All candidates have been entered in the empty cells.
Cell A is 2, 5, 7, or 9.
If cell A is 2, cell B is 9. If cell A is 5, cell C is 9. If cell A is 7, cell D is 9.
In every case, at least one of cell A, cell B, cell C and cell D contains 9. Candidate digit 9 marked × conflicts with 9 in any of these cells and can be removed.