Chess Board
[ECO code C25]
VIENNA GAMBIT
Hamppe-Allgaier Gambit
Black's king captured White's Kt on KB7(f7) to avoid losing queen or KR, and can no longer castle.
White advances his Queen's Pawn to the centre and frees his QB for 9.BxP and a clear advantage.
    White  Black	White  Black
 1. P-K4   P-K4      6.	Kt-KKt5!? P-KR3
 2. Kt-QB3 Kt-QB3    7.	KtxP   KxKt
 3. P-B4   PxP	     8.	P-Q4
 4. Kt-B3  P-KKt4
 5. P-KR4  P-Kt5
Example ends: Undo or Jump or Clear