Chess Board
[ECO code C42]
PETROFF'S DEFENCE
Paulsen Variation

Black's Knight removes White's king's pawn on K4(e4) and threatens 5..KtxBP to fork White's Q+R.
White develops his Queen's Knight to QB3(c3) to attack Black's knight, dismissing Black's threat.
	White	Black
 1.	P-K4	P-K4
 2.	Kt-KB3	Kt-KB3
 3.	KtxP	P-Q3
 4.	Kt-B4	KtxP
 5.	Kt-B3

Example ends: Undo or Jump or Clear