After 1.d4 d5 2.c4 dxc4 3.e4 Black has a very important decision to make, as they don’t want to allow White to regain the pawn without a fight. Back in 2014 the idea with 3…b5 enjoyed some popularity, but that concept had a short lifespan. In the critical line after 4.a4 c6 5.axb5 cxb5 6.Nc3 Black was ready to give up the exchange after 6…a6 7.Nxb5 axb5 8.Rxa8, with interesting play, though not entirely sound. Recently the move 6…Qb6!? has been tried, often with some success, and certainly deserves more investigation. The ensuing positions are fresh and may put your opponent off-guard. Apart from this complicated main line, lesser-known alternatives for White on earlier moves are also discussed. That makes it a complete repertoire for Black against the QGA with 3.e4, which makes 3…b5 a fascinating alternative to 3…e5.
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