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- D43-D49 Queen's Gambit Declined semi-Slav1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 c6, D49 - 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 a6 9.e4 c5 10.e5 cxd4 11.Nxb5 - Semi-Slav [+0.30], D49j - 11…axb5 12.exf6 Qb6 - Meran Old Main Line Botvinnik Variation [+0.60], SÉRIE D
1948 Stockholm – Round 1 – Aczel Szabo, Janos – 1-0 – Foltys, Jan – G7

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- D43-D49 Queen's Gambit Declined semi-Slav1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 c6, D49 - 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 a6 9.e4 c5 10.e5 cxd4 11.Nxb5 - Semi-Slav [+0.30], D49g - 11…Nxe5 12.Nxe5 axb5 13.Qf3 Bb4 - Meran Sozin Stahlberg Attack [+0.35], SÉRIE D
1948 Venice – Round 1 – Giustolisi, Alberto – 1/2-1/2 – Fletzer, Gino – G6

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- D43-D49 Queen's Gambit Declined semi-Slav1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 c6, D49 - 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 a6 9.e4 c5 10.e5 cxd4 11.Nxb5 - Semi-Slav [+0.30], D49j - 11…axb5 12.exf6 Qb6 - Meran Old Main Line Botvinnik Variation [+0.60], SÉRIE D
1948 World Championship 18th – Round 12 – Botvinnik, Mikhail – 1-0 – Euwe, Max – G8

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- D43-D49 Queen's Gambit Declined semi-Slav1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 c6, D49 - 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 a6 9.e4 c5 10.e5 cxd4 11.Nxb5 - Semi-Slav [+0.30], D49j - 11…axb5 12.exf6 Qb6 - Meran Old Main Line Botvinnik Variation [+0.60], SÉRIE D
1949 Budapest-Moscow – Round 2 – Tipary, Lajos – 1-0 – Simagin, Vladimir – G10

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- D43-D49 Queen's Gambit Declined semi-Slav1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 c6, D49 - 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 a6 9.e4 c5 10.e5 cxd4 11.Nxb5 - Semi-Slav [+0.30], D49j - 11…axb5 12.exf6 Qb6 - Meran Old Main Line Botvinnik Variation [+0.60], SÉRIE D
1949 Mar del Plata – Round 15 – Maderna, Carlos – 1-0 – Benko, Francisco – G126

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- D43-D49 Queen's Gambit Declined semi-Slav1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 c6, D49 - 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 a6 9.e4 c5 10.e5 cxd4 11.Nxb5 - Semi-Slav [+0.30], D49b - 11…Ng4 - Meran Old Main Line Gligoric Variation [+0.56], SÉRIE D
1949 Mar del Plata – Round 17 – Alvarez Martin, Pedro – 1-0 – Pomar Salamanca, Arturo – G142

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- D43-D49 Queen's Gambit Declined semi-Slav1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 c6, D49 - 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 a6 9.e4 c5 10.e5 cxd4 11.Nxb5 - Semi-Slav [+0.30], D49j - 11…axb5 12.exf6 Qb6 - Meran Old Main Line Botvinnik Variation [+0.60], SÉRIE D
1949 Oldenburg – Round 15 – Saemisch, Friedrich – 0-1 – Wade, Robert G – G50

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- D43-D49 Queen's Gambit Declined semi-Slav1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 c6, D49 - 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 a6 9.e4 c5 10.e5 cxd4 11.Nxb5 - Semi-Slav [+0.30], D49j - 11…axb5 12.exf6 Qb6 - Meran Old Main Line Botvinnik Variation [+0.60], SÉRIE D
1949 Trencianske Teplice – Round 14 – Szabo, Ladislav – 0-1 – Szily, Jozsef – G82

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- D43-D49 Queen's Gambit Declined semi-Slav1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 c6, D49 - 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 a6 9.e4 c5 10.e5 cxd4 11.Nxb5 - Semi-Slav [+0.30], D49j - 11…axb5 12.exf6 Qb6 - Meran Old Main Line Botvinnik Variation [+0.60], SÉRIE D
1949 Trencianske Teplice – Round 14 – Ujtelky, Maximilian – 1/2-1/2 – Richter, Edgar – G88

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- D43-D49 Queen's Gambit Declined semi-Slav1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 c6, D49 - 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 a6 9.e4 c5 10.e5 cxd4 11.Nxb5 - Semi-Slav [+0.30], D49j - 11…axb5 12.exf6 Qb6 - Meran Old Main Line Botvinnik Variation [+0.60], SÉRIE D
1949 Trencianske-Teplice – Round 6 – Golombek, Harry – 1/2-1/2 – Szily, Jozsef – G38

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- D43-D49 Queen's Gambit Declined semi-Slav1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 c6, D49 - 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 a6 9.e4 c5 10.e5 cxd4 11.Nxb5 - Semi-Slav [+0.30], D49g - 11…Nxe5 12.Nxe5 axb5 13.Qf3 - Meran Sozin Stahlberg Attack [+0.32], SÉRIE D
1949 URS Ch, semi final – Round 1 – Kamishov, Mikhail P – 1/2-1/2 – Khasin, Abram – G14

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- D43-D49 Queen's Gambit Declined semi-Slav1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 c6, D49 - 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 a6 9.e4 c5 10.e5 cxd4 11.Nxb5 - Semi-Slav [+0.30], D49f - 11…Nxe5 12.Nxe5 axb5 13.O-O - Meran Sozin Rellstab Attack [+0.16], SÉRIE D
1949 URS Ch, semi final – Round 16 – Kopaev, Nikolay A – 1/2-1/2 – Byvshev, Vasily – G115

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