[ECO code C30]
The Soldatenkov Variation
White's gambit KB4(f4) Pawn removes Black's KP on K5(e5) safely (now that his developed KKt prevents ..Q-R5+ch), and attacks Black's QP. W-Alt.
White Black 1. P-K4 P-K4 2. P-KB4 B-B4 3. Kt-KB3 P-Q3 4. PxP
Example ends: Undo or Jump or Clear