Chess Board
[ECO code B12]
CARO-KANN DEFENCE - Advance Var.
Bayonet Attack
White advanced a dubiously-regarded KKtPawn to KKt4(g4) to attack and dislodge Black's light bishop.
Black best moves his KB4(f5) Bishop to Q2(d7), to gain advantage (despite a loss of tempo) from having upset White's K-side pawn development.
	White	Black
 1.	P-K4	P-QB3
 2.	P-Q4	P-Q4
 3.	P-K5	B-B4
 4.	P-KKt4?	B-Q2
Example ends: Undo or Jump or Clear