by civiliza » Fri Oct 05, 2012 1:06 pm
Not unless you have performed other eliminations that are not shown in your picture.
The XYZ Wing needs an XYZ Cell at the intersection of an XY cell and an XZ (or YZ) cell. Your diagram shows it at the intersection of an XY and a XYZ cell.
Also (as it turns out) , a proper XYZ Wing using the three cells you have circled would only eliminate values in the two cells (the 1 and the 5) directly above the row 3 XYZ cell. Since the value of both of these cells is already known, an XYZ Wing elimination would have no effect.