Chess Board
[ECO code D25]
The Winaver Variation

White's KP step tripled his QP support against 4..P-B4 and freed his KB to attack Black's doubled QBP.
Black develops his Queen's Bishop to K3(e6) to defend his doubled QBP against 5.BxP. Rare, as he cannot realistically keep the pawn gained. B-Alt.
	White	Black
 1.	P-Q4	P-Q4
 2.	P-QB4	PxP
 3.	Kt-KB3	Kt-KB3
 4.	P-K3	B-K3

Example ends: Undo or Jump or Clear