The Vienna Variation - a reliable and ambitious weapon against 1.d4
The Vienna Variation is a particular and independent system of the Queen's Gambit. It arises after 1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.Nc3 dxc4, when Black's capture on move 4 is strongly reminiscent of the Queen's Gambit Accepted.
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