Chess Board
[ECO code C47]
SCOTCH FOUR KNIGHTS GAME
The Krause Variation

Black's KB pinned White's QKt (taking some of the sting out of White's QP attack), and enabled ..0-0.
White's King's Knight removes Black's KP on K5(e5) and now threatens Black's QKt and KBP.
	White	Black
 1.	P-K4	P-K4
 2.	Kt-KB3	Kt-QB3
 3.	Kt-B3	Kt-B3
 4.	P-Q4	B-Kt5
 5.	KtxP

Example ends:: Undo or Jump or Clear