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- D20-D29 1. d4 d5 2. c4 dxc4 Queen's gambit accepted, D22 - 1.d4 d5 2.c4 dxc4 3.Nf3 a6 4.e3 - QGA, D22b - 4…b5 - Queen's Gambit Accepted: Alekhine Defense, Haberditz Variation (1936), SÉRIE D
World Rapid 2021 – Round 7.43 – Riazantsev, Alexander – 1/2-1/2 – Christiansen, Johan-Sebastian – G418
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