[ECO code A11]
White advances his Queen's Pawn to Q4(d4), adopting a possible QGD Slav line as an alternative to 2.P-K4 (inviting the Caro-Kann Defence) or 2.Kt-KB3 (with Reti / Barcza S. associations). W-Alt.
White Black 1. P-QB4 P-QB3 2. P-Q4 Transp. 2W,1W route
BLACK to or Undo or Jump or Clear
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