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- E20-E59 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 Nimzo-Indian defence, E56 - 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O Nc6 - Nimzo-Indian Defense: Normal Variation, Gligoric System, Bernstein Defense, SÉRIE E
Madrid 1973 – Round 15 – Portisch, Lajos – 1/2-1/2 – Furman, Slavomir – G28

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- A10-A39 English Opening, A12 - 1. c4 Nf6 2. g3 c6 3. Nf3 d5 4. b3 - Réti Opening: Anglo-Slav Variation, A12 - 1. c4 Nf6 2. g3 c6 3. Nf3 d5 4.... - Réti Opening, A12 - 1. Nf3 d5 2. c4 c6 3. b3 - Réti Opening: Anglo-Slav Variation, Bogoljubow Variation, SÉRIE A
Madrid 1973 – Round 2 – Panno, Oscar – 1/2-1/2 – Karpov, Aleksandr – G5

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- A10-A39 English Opening, A32 - 1. c4 e6 2. d4 c5 3. Nf3 cxd4 4. Nxd4 Nf6 - English Opening: Symmetrical Variation, Anti-Benoni Variation, Spielmann Defense, A32 - 1. c4 e6 2. d4 c5 3. Nf3 cxd4 4.... - English Opening, SÉRIE A
Madrid 1973 – Round 3 – Calvo Minguez, Ricardo – 0-1 – Portisch, Lajos – G7

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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
Madrid 1973 – Round 4 – Hort, Vlastimil – 1-0 – Portisch, Lajos – G8

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- 9...d6 10.b3, E12-E19 1. d4 Nf6 2. c4 e6 3. Nf3 b6 Queen's Indian defence, E19 - 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 - Queen's Indian Defense: Classical Variation, Traditional Variation, Main Line, SÉRIE E
Madrid 1973 – Round 4 – Tukmakov, Vladimir B – 1/2-1/2 – Karpov, Aleksandr – G9

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- A10-A39 English Opening, A25 - 1. c4 e5 2. Nc3 Nc6 - English Opening: King's English Variation, Reversed Closed Sicilian, A25 - 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Rb1 Nh6 5. Bg2 Bg7 - English Opening: Closed, Taimanov Variation, A25 - 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4.... - English Opening, SÉRIE A
Madrid 1973 – Round 5 – Karpov, Aleksandr – 1/2-1/2 – Bellon Lopez, Juan Manuel – G10

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- 10.h3 Nc5 11.Re1 a5, 8...exd4 9.Nxd4 Re8, E60-E99 1. d4 Nf6 2. c4 g6 King's Indian defence, E68 - 1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 O-O 5. Bg2 d6 6. O-O Nbd7 7. Nc3 e5 8. e4 - King's Indian Defense: Fianchetto Variation, Classical Variation, SÉRIE E
Madrid 1973 – Round 5 – Portisch, Lajos – 1-0 – Planinec, Albin – G11

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- 5.Nb5 d6, 6.c4 Nf6 7.N5c3, B20 - B99 - 1. e4 c5 - Sicilian Defense, B40 - B49 1. e4 c5 2. Nf3 e6 Sicilian defence, B44 - 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 - Sicilian Defense: Taimanov Variation, SÉRIE B 1.e4 2....
Madrid 1973 – Round 6 – Ljubojevic, Ljubomir – 1/2-1/2 – Karpov, Aleksandr – G13

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- A10-A39 English Opening, A32 - 1. c4 e6 2. d4 c5 3. Nf3 cxd4 4. Nxd4 Nf6 - English Opening: Symmetrical Variation, Anti-Benoni Variation, Spielmann Defense, A32 - 1. c4 e6 2. d4 c5 3. Nf3 cxd4 4.... - English Opening, SÉRIE A
Madrid 1973 – Round 6 – Pomar Salamanca, Arturo – 1/2-1/2 – Portisch, Lajos – G12

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