Blumenfeld Countergambit (1.d4 Nf6 2.c4 e6 3.Nf3 c5 4.d5 b5) Chess Puzzles

The blumenfeld countergambit is a sharp opening where Black accepts a pawn sacrifice to gain activity, most famously after the defining move sequence 1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.cxd5 Nxd5 5.e4. In this structure, Black’s counterplay is aimed at undermining White’s center and exploiting the fact that White has committed to an e4 pawn, often leading to dynamic piece play rather than slow development.