Chess Board
[ECO code C83]
OPEN RUY LOPEZ - Classical Defence
St.Petersburg Variation (#1)
White's QKt3(b3) bishop moved to QB2(c2) aiming to drive away Black's central knight.
Black advances his KBPawn to KB4(f5), defends his knight and obtains action for his KR. Equality.
    White  Black     6.	P-Q4   P-QKt4
 1. P-K4   P-K4	     7.	B-Kt3  P-Q4!
 2. Kt-KB3 Kt-QB3    8.	PxP    B-K3
 3. B-Kt5  P-QR3     9.	P-B3   B-K2
 4. B-R4   Kt-B3    10.	QKt-Q2 0-0
 5. 0-0    KtxP	    11.	B-B2   P-B4
Example ends: Undo or Jump or Clear