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- 4...Ba6 5.b3 Bb7, 6.Bg2 Bb4+ 7.Bd2 a5 8.O-O O-O, E12-E19 1. d4 Nf6 2. c4 e6 3. Nf3 b6 Queen's Indian defence, E15 - 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 - Queen's Indian Defense: Fianchetto Variation, SÉRIE E
World Cup 1988 – Round 1 – Petursson, Magnus V. – 0-1 – Hjartarson, Johann – G31

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- D50-D69 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Queen's Gambit Declined, 4.Bg5, D63 - 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Bg5 Be7 5. e3 O-O 6. Nf3 Nbd7 7. Rc1 b6 8. cxd5 exd5 9. Bd3 - Queen's Gambit Declined: Orthodox Defense, Pillsbury Variation, SÉRIE D
World Cup 1988 – Round 1 – Petursson, Magnus V. – 0-1 – Korchnoi, Viktor – G41

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- D50-D69 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Queen's Gambit Declined, 4.Bg5, D63 - 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Bg5 Be7 5. e3 O-O 6. Nf3 Nbd7 7. Rc1 b6 8. cxd5 exd5 9. Bd3 - Queen's Gambit Declined: Orthodox Defense, Pillsbury Variation, SÉRIE D
World Cup 1988 – Round 1 – Petursson, Magnus V. – 0-1 – Sokolov, Albert – G42

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- 5...O-O 6.Bg5 h6 7.Be3 (not 7...e5), E60-E99 1. d4 Nf6 2. c4 g6 King's Indian defence, E73 - 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 - King's Indian Defense: Normal Variation, Standard Development, SÉRIE E
World Cup 1988 – Round 1 – Petursson, Magnus V. – 1-0 – Nunn, John D M – G47

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- 7.Nb3 Ne5, A10-A39 English Opening, A33 - 1. c4 e6 2. Nf3 Nf6 3. Nc3 c5 4. d4 Nc6 5. g3 cxd4 6. Nxd4 Qb6 - English Opening: Symmetrical Variation, Anti-Benoni Variation, Geller Variation, A33 - 1. c4 e6 2. Nf3 Nf6 3. Nc3 c5 4.... - English Opening, SÉRIE A
World Cup 1988 – Round 1 – Portisch, Lajos – 1-0 – Sax, Gyula – G5

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- A60-A79 1. d4 Nf6 2. c4 c6 3. d5 e6 Modern Benoni Defense, A77 - 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. Nf3 Bg7 8. Be2 O-O 9. O-O Re8 10. Nd2 - Benoni Defense: Classical Variation, Czerniak Defense, Tal Line, A77 - 1. d4 Nf6 2. c4 c5 3. d5 e6 4.... - Benoni Defense, SÉRIE A
World Cup 1988 – Round 1 – Portisch, Lajos – 1-0 – Winants, Luc – G36

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