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- D40-D42 – 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5 – Queen’s Gambit Declined: Semi-Tarrasch Defense, D41 - 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c5 5.cxd5 - QGD [+0.31], D41n - 5…Nxd5 6.e4 Nxc3 7.bxc3 cxd4 8.cxd4 Bb4+ 9.Bd2 Bxd2+ 10.Qxd2 O-O 11.Bc4 Nc6 12.O-O - Semi-Tarrasch Main Line [+0.51], SÉRIE D
World Cup 1989 – Round 1 – Seirawan, Yasser – 1-0 – Korchnoi, Viktor – G23
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- D10-D19 1. d4 d5 2. c4 c6 Queen's Gambit Slav defence, D14 - 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.cxd5 cxd5 5.Nc3 Nc6 6.Bf4 Bf5 - Slav [+0.28], D14g - 7.e3 e6 8.Qb3 Bb4 - Exchange Trifunovic Variation [+0.13], SÉRIE D
World Cup 1989 – Round 1 – Seirawan, Yasser – 1-0 – Nogueiras Santiago, Jesus – G12
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- D43-D49 Queen's Gambit Declined semi-Slav1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 c6, D48 - 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 a6 - Semi-Slav [+0.29], D48p - 9.e4 c5 10.d5 c4 11.dxe6 fxe6 12.Bc2 Qc7 13.O-O - Meran Reynolds [+0.33], SÉRIE D
World Cup 1989 – Round 1 – Seirawan, Yasser – 1/2-1/2 – Ribli, Zoltan – G19
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