Chess Board
[ECO code C67]
RUY LOPEZ - Open Berlin Def.
Showalter Variation
Black's K2(e7) bishop to KB3(f6) [or 10..R-K1] avoided losing an 11.BxKt, 12.KtxB+ch exchange.
White develops QBishop to KB4(f4) [as 12.KtxP ..QxKt??, 13.BxKt forks Q+R], with a slight advantage.
    White  Black     6.	B-R4   PxP
 1. P-K4   P-K4	     7.	P-B3   PxP
 2. Kt-KB3 Kt-QB3    8.	KtxP   B-K2
 3. B-Kt5  Kt-B3     9.	Kt-Q5  0-0
 4. 0-0    KtxP	    10.	R-K1   B-B3
 5. P-Q4   Kt-Q3    11.	B-B4
Example ends: Undo or Jump or Clear