Chess Board
[ECO code C70]
RUY LOPEZ
Alapin Defence Deferred
White pushes his QBPawn out to QB3(c6) attacking Black's bishop and supporting a planned P-Q4.
Black's threatened Bishop on QKt5(b4) retreats to the QR-file (ie. the a-file).
    White  Black	White  Black
 1. P-K4   P-K4	     6.	P-B3   B-R4
 2. Kt-KB3 Kt-QB3
 3. B-Kt5  P-QR3
 4. B-R4   B-Kt5
 5. 0-0	   KKt-K2
Example ends: Undo or Jump or Clear