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- D40 - 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c5 - QGD [+0.15], D40-D42 – 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5 – Queen’s Gambit Declined: Semi-Tarrasch Defense, D40o - 5.e3 Nc6 6.a3 a6 - Semi-Tarrasch [+0.24], SÉRIE D
Buenos Aires 1980 – Round 1 – Najdorf, Miguel – 1-0 – Kavalek, Lubomir – G14
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- E12-E19 1. d4 Nf6 2. c4 e6 3. Nf3 b6 Queen's Indian defence, E17 - 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 - Queen’s Indian [+0.41], E17x - 6.O-O O-O 7.d5 exd5 8.Nh4 c6 9.cxd5 Nxd5 - Pomar Polugaevsky [+0.33], SÉRIE E
Buenos Aires 1980 – Round 1 – Polugaevsky, Lev – 1-0 – Korchnoi, Viktor – G31
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- D50-D69 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Queen's Gambit Declined, 4.Bg5, D65 - 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 c6 8.Qc2 a6 9.cxd5 - QGD [+0.17], D65g - 9…exd5 10.Bd3 Re8 11.O-O Nf8 - Orthodox Rubinstein [+0.46], SÉRIE D
Buenos Aires 1980 – Round 1 – Timman, Jan H – 1-0 – Balashov, Yuri S – G9
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