Grouped XYZ Nice Loop
Close a loop through an XYZ-Wing's shared digit and a grouped strong link to derive eliminations beyond the wing alone.
All candidates have been entered in the empty cells.
A marks the three-candidate center and the two bivalue ends. Their common digit joins the candidate groups in B and C through a two-place choice. Therefore, the connection closes a loop. Candidates 7 and 9 marked × can be removed.