[ECO code D10]
The Winawer Counter-Gambit
Black advances his King's Pawn to the centre to challenge White's QP with a sacrificial gambit best refused by 4.BPxP..BPxP, 5.P-K4. First seen in Marshall-Winawer, Monte Carlo 1901. B-Alt.
White Black 1. P-Q4 P-Q4 2. P-QB4 P-QB3 3. Kt-QB3 P-K4
Example ends: Undo or Jump or Clear