[ECO code D00]
The Lemberger Countergambit
Black advances his base King's Pawn to K4(e5), playing the Lemberger Counter Gambit to defend his K5(e4) pawn. Rarely seen, White can have many replies (eg. 4.PxP, 4.KtxP, 4.B-K3, 4.Q-R5). B-Alt.
White Black 1. P-Q4 P-Q4 2. P-K4!? PxP 3. Kt-QB3 P-K4
Example ends: Undo or Jump or Clear