Chess Board
[ECO code B20]
SICILIAN DEFENCE - Centre Game
Side Variation

White's KB3(f3) knight removed Black's newly set KP on K5(e5), rejecting a gambit attack against Black's doubled QP. An error jeopardising the Kt.
Black develops his Queen to QR4(a5) with check to fork Black's knight, and 5..QxKt is unstoppable.
	White	Black
 1.	P-K4    P-QB4
 2.	P-Q4!?	PxP
 3.	Kt-KB3	P-K4
 4.	KtxP??  Q-R4 ch!

Example ends: Undo or Jump or Clear