Chess Board
[ECO code C66]
(Closed Berlin) RUY LOPEZ - Tarrasch Trap
Black wrongly used his KB3(f6) knight to remove White's KP in a third exchange (11..BxP was better).
White's K5(e5) Knight removes Black's bishop on QB6(c6) to fork QR+B and gain by 13.KtxKt.
    White  Black	White  Black
 1. P-K4   P-K4	     7.	R-K1   0-0?!
 2. Kt-KB3 Kt-QB3    8.	BxKt!  BxB
 3. B-Kt5  Kt-B3     9.	PxP    PxP
 4. 0-0    P-Q3	    10.	QxQ    QRxQ
 5. P-Q4   B-Q2	    11.	KtxP   KtxP??
 6. Kt-B3  B-K2	    12.	KtxB!
Example ends: Undo or Jump or Clear