Chess Board
[ECO code C20]
ALAPIN OPENING
Exchange Variation

White's K2(e2) knight removed Black's doubled KBP on KB4(f4) and took control of Q5(d5).
Black develops his Queen to K2(e7), pinning the White KP to prevent 5..P-Q4, 6.PxP or 5.P-K5, 6.PxKt.
	White	Black
 1.	P-K4	P-K4
 2.	Kt-K2	Kt-KB3
 3.	P-KB4	PxP
 4.	KtxP	Q-K2

Example ends: Undo or Jump or Clear