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- D80-D99 Gruenfeld defence1. d4 Nf6 2. c4 g6 3. Nc3 d5, D86 - 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 - Gruenfeld [+0.31], D86i - 7…O-O 8.Ne2 b6 9.O-O - Classical Exchange Simagin [+0.19], SÉRIE D
1954 Olympiad final A – Round 1 – Arnlaugsson, Gudmundur – 1/2-1/2 – Sajtar, Jaroslav – G49

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- D80-D99 Gruenfeld defence1. d4 Nf6 2. c4 g6 3. Nc3 d5, D86 - 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 - Gruenfeld [+0.31], D86f - 7…O-O 8.Ne2 b6 - Classical Exchange Simagin [+0.92], SÉRIE D
1954 Prague zt – Round 15 – Sliwa, Bogdan – 1-0 – Koskinen, Hannu E. – G85

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- D80-D99 Gruenfeld defence1. d4 Nf6 2. c4 g6 3. Nc3 d5, D86 - 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 - Gruenfeld [+0.31], D86i - 7…O-O 8.Ne2 b6 9.O-O - Classical Exchange Simagin [+0.19], SÉRIE D
1954 Prague zt – Round 18 – Uhlmann, Wolfgang – 1/2-1/2 – Pachman, Ludek – G103

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- D80-D99 Gruenfeld defence1. d4 Nf6 2. c4 g6 3. Nc3 d5, D86 - 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 - Gruenfeld [+0.31], D86i - 7…O-O 8.Ne2 b6 9.O-O - Classical Exchange Simagin [+0.19], SÉRIE D
1954 Prague zt Prague CZE – Round 10 – Balanel, Ion – 1/2-1/2 – Sajtar, Jaroslav – G35

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- D80-D99 Gruenfeld defence1. d4 Nf6 2. c4 g6 3. Nc3 d5, D86 - 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 - Gruenfeld [+0.31], D86i - 7…O-O 8.Ne2 b6 9.O-O - Classical Exchange Simagin [+0.19], SÉRIE D
1954 Prague zt Prague CZE – Round 3 – Kluger, Gyula – 1/2-1/2 – Sajtar, Jaroslav – G12

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- D80-D99 Gruenfeld defence1. d4 Nf6 2. c4 g6 3. Nc3 d5, D86 - 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 - Gruenfeld [+0.31], D86k - 7…O-O 8.Ne2 Nc6 9.O-O - Classical Exchange Simagin Improved [+0.42], SÉRIE D
1954 URS Ch, semi final – Round 1 – Ilivitsky, Georgy A – 1-0 – Korchnoi, Viktor – G34

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- D80-D99 Gruenfeld defence1. d4 Nf6 2. c4 g6 3. Nc3 d5, D86 - 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 - Gruenfeld [+0.31], D86i - 7…O-O 8.Ne2 b6 9.O-O - Classical Exchange Simagin [+0.19], SÉRIE D
1954 World Championship 20th – Round 6 – Botvinnik, Mikhail – 1/2-1/2 – Smyslov, Vladimir – G6

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- D80-D99 Gruenfeld defence1. d4 Nf6 2. c4 g6 3. Nc3 d5, D86 - 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 - Gruenfeld [+0.31], D86j - 7…O-O 8.Ne2 Nc6 9.Be3 - Classical Exchange Simagin Improved [+0.20], SÉRIE D
1955 Argentina – Round 19 – Wexler, Bernardo – 1-0 – Najdorf, Miguel – G134

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- D80-D99 Gruenfeld defence1. d4 Nf6 2. c4 g6 3. Nc3 d5, D86 - 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 - Gruenfeld [+0.31], D86i - 7…O-O 8.Ne2 b6 9.O-O - Classical Exchange Simagin [+0.19], SÉRIE D
1955 Buenos Aires CA – Round 15 – Gligoric, Svetozar – 1-0 – Pachman, Ludek – G10

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- D80-D99 Gruenfeld defence1. d4 Nf6 2. c4 g6 3. Nc3 d5, D86 - 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 - Gruenfeld [+0.31], D86h - 7…O-O 8.Ne2 b6 9.h4 - Classical Exchange Simagin [+1.06], SÉRIE D
1955 Gothenburg Interzonal – Round 9 – Fuderer, Andrija – 1-0 – Filip, Marius Liviu – G81

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- D80-D99 Gruenfeld defence1. d4 Nf6 2. c4 g6 3. Nc3 d5, D86 - 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 - Gruenfeld [+0.31], D86m - 7…O-O 8.Ne2 Nc6 9.O-O b6 - Classical Exchange Simagin Improved [+0.49], SÉRIE D
1955 Prague tm Prague CZE – Round 3 – Kozma, Julius – 1/2-1/2 – Sajtar, Jaroslav – G18

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- D80-D99 Gruenfeld defence1. d4 Nf6 2. c4 g6 3. Nc3 d5, D86 - 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 - Gruenfeld [+0.31], D86k - 7…O-O 8.Ne2 Nc6 9.O-O - Classical Exchange Simagin Improved [+0.42], SÉRIE D
1955 RUS Ch – Round ? – Vladimirov, Yevgeniy – 1-0 – Dubinin, Peter – G6

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