Chess Board
[ECO code C79]
MORPHY RUY LOPEZ
Russian Defence
White develops his Queen's Knight to QB3(c3) defending his KP.
Black develops his Queen's Bishop to QKt2(b7) doubling the attack on White's KP, with equality.
    White  Black	White  Black
 1. P-K4   P-K4	     6.	P-Q4   P-QKt4
 2. Kt-KB3 Kt-QB3    7.	PxP    PxP
 3. B-Kt5  P-QR3     8.	QxQ ch KtxQ
 4. B-R4   Kt-B3     9.	B-Kt3  B-Q3
 5. 0-0	   P-Q3	    10.	Kt-B3  B-Kt2
Example ends: Undo or Jump or Clear