[ECO code A56]
Hromadka (aka. Loose) Gambit (Accepted)
White's QP rarely captures Black's QBP. W-Alt.
Black then pushes his KPawn out so as to free his KB and recapture the lost pawn by 4..BxP (threatening White's weak KB2/f2) with advantage.
White Black 1. P-Q4 Kt-KB3 2. P-QB4 P-B4 3. PxP?! P-K3
Example ends: Undo or Jump or Clear