[ECO code C22]
The L'Hermet Variation
Black advances his King's Bishop's Pawn to KB4(f5) attacking White's KP to draw it off centre. A move with much surprise value, analysed by Rudolf L'Hermet. B-Alt.
White Black 1. P-K4 P-K4 2. P-Q4 PxP 3. QxP Kt-QB3 4. Q-K3 P-KB4
Example ends: Undo or Jump or Clear