Chess Board
[ECO code C40]
GRECO DEFENCE
Side Variation
Black's king in check removed White's bishop (a bad move) and forfeited all chance of castling.
White's KB3(f3) Knight moves to KKt5(g5) with check, forking Black's queen - a winning advantage.
    White  Black	White  Black
 1. P-K4   P-K4	     6.	Kt-Kt5 ch
 2. Kt-KB3 Q-B3
 3. B-B4   Q-KKt3
 4. 0-0	   QxKP
 5. BxP ch KxB??
Example ends: Undo or Jump or Clear