Chess Board
[ECO code C42]
PETROFF DEF. - Boden-Kieseritzky Gambit
Side Variation
White's Q-side Knight on QB3(c3) moves to K4(e4) attacking Black's dark bishop on QB5(c5).
Black's Bishop moves to QKt3(b6) but his position is hopeless (9.B-KKt5!..Q-Q1 [..P-KB3, 10.KtxBP!..PxKt, 11.B-KR6++mate], 10.Kt-Q6 and Black loses Q).
    White  Black	White  Black
 1. P-K4   P-K4	     5.	KxKt   B-B4 ch
 2. Kt-KB3 Kt-KB3    6.	P-Q4!  PxP
 3. B-B4   KtxP	     7.	R-K1   K-B1
 4. Kt-B3  KtxBP?!   8.	Kt-K4  B-Kt3
Example ends: Undo or Jump or Clear