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- D50-D69 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Queen's Gambit Declined, 4.Bg5, D52 - 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.e3 c6 6.Nf3 - QGD [+0.27], D52h - 6…Qa5 7.Nd2 dxc4 - Cambridge Springs Rubinstein Variation [+0.28], SÉRIE D
1939 Buenos Aires ol f-A – Round 12 – Flores Alvarez, Rodrigo – 0-1 – Engels, Ludwig – G224

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- D50-D69 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Queen's Gambit Declined, 4.Bg5, D52 - 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.e3 c6 6.Nf3 - QGD [+0.27], D52h - 6…Qa5 7.Nd2 dxc4 - Cambridge Springs Rubinstein Variation [+0.28], SÉRIE D
1939 Buenos Aires ol f-A – Round 6 – Apscheneek, Fricis – 1/2-1/2 – Engels, Ludwig – G117

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- D50-D69 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Queen's Gambit Declined, 4.Bg5, D52 - 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.e3 c6 6.Nf3 - QGD [+0.27], D52c - 6…Qa5 7.Bxf6 - Cambridge Springs Capablanca Variation [+0.13], SÉRIE D
1939 Buenos Aires ol f-A – Round 6 – Fallet Kahn, Victor – 1/2-1/2 – Bolbochan, J. – G110

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- D50-D69 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Queen's Gambit Declined, 4.Bg5, D52 - 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.e3 c6 6.Nf3 - QGD [+0.27], D52k - 6…Qa5 7.Nd2 Bb4 8.Qc2 dxc4 - Cambridge Springs [+0.24], SÉRIE D
1939 Buenos Aires ol f-B – Round 3 – Laterza Luis – 0-1 – Yanofsky, Daniel Abraham – G10

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- D50-D69 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Queen's Gambit Declined, 4.Bg5, D52 - 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.e3 c6 6.Nf3 - QGD [+0.27], D52f - 6…Qa5 7.cxd5 Nxd5 8.Qd2 - Cambridge Springs Yugoslav [+0.21], SÉRIE D
1939 Buenos Aires ol prel-B – Round 7 – Tsvetkov, Alexandar K – 0-1 – Hounie Fleurquin, Carlos – G29

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- D50-D69 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Queen's Gambit Declined, 4.Bg5, D52 - 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.e3 c6 6.Nf3 - QGD [+0.27], D52n - 6…Qa5 7.Nd2 Bb4 8.Qc2 O-O 9.Be2 - Cambridge Springs [+0.25], SÉRIE D
1939 Leningrad ch-URS – Round 13 – Makogonov, Vladimir – 1/2-1/2 – Ragozin, Viacheslav – G104

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- D50-D69 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Queen's Gambit Declined, 4.Bg5, D52 - 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.e3 c6 6.Nf3 - QGD [+0.27], D52k - 6…Qa5 7.Nd2 Bb4 8.Qc2 dxc4 - Cambridge Springs [+0.24], SÉRIE D
1939 Leningrad ch-URS – Round 17 – Levenfish, Grigory – 1-0 – Chistiakov, Alexander – G137

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- D50-D69 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Queen's Gambit Declined, 4.Bg5, D52 - 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.e3 c6 6.Nf3 - QGD [+0.27], D52c - 6…Qa5 7.Bxf6 - Cambridge Springs Capablanca Variation [+0.13], SÉRIE D
1939 Leningrad/Moscow – Round 11 – Romanovsky, Pjotr – 1/2-1/2 – Smyslov, Vladimir – G82

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- D50-D69 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Queen's Gambit Declined, 4.Bg5, D52 - 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.e3 c6 6.Nf3 - QGD [+0.27], D52l - 6…Qa5 7.Nd2 Bb4 8.Qc2 O-O - Cambridge Springs [+0.22], SÉRIE D
1939 SCO-ch52/ – Round 6 – Geronimus, Louis Harold – 1/2-1/2 – Winter, William – G11

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- D50-D69 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Queen's Gambit Declined, 4.Bg5, D52 - 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.e3 c6 6.Nf3 - QGD [+0.27], D52h - 6…Qa5 7.Nd2 dxc4 - Cambridge Springs Rubinstein Variation [+0.28], SÉRIE D
1939 Stuttgart – Round 4 – Kieninger, Georg – 1/2-1/2 – Engels, Ludwig – G21

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- D50-D69 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Queen's Gambit Declined, 4.Bg5, D52 - 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.e3 c6 6.Nf3 - QGD [+0.27], D52g - 6…Qa5 7.Nd2 - Cambridge Springs [+0.25], SÉRIE D
1939 USA Ch New York, NY USA – Round 4 – Ulvestad, Olaf – 0-1 – Pinkus, Albert – G10

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