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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 Amsterdam olm – Round 1 – Porreca, Giorgio – 0-1 – Filip, Marius Liviu – G84

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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 Belgrade – Round 6 – Petrosian, Tigran A. – 1/2-1/2 – Barcza, Gedeon – G62

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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], D86g - 7…O-O 8.Ne2 Nc6 - Classical Exchange Simagin Improved [+0.41], SÉRIE D
1954 Bucharest – Round 12 – Filip, Marius Liviu – 0-1 – Korchnoi, Viktor – G102

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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 Bucharest – Round 14 – Wade, Robert G – 0-1 – Filip, Marius Liviu – G116

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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
1954 CSR Ch – Round 16.3 – Podgorny, Jiri – 1-0 – Sajtar, Jaroslav – G137

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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], D86g - 7…O-O 8.Ne2 Nc6 - Classical Exchange Simagin Improved [+0.41], SÉRIE D
1954 Dyckhoff Memorial A 5456 – Round ? – Hayes, Christiaan – 1-0 – Heemsoth, Hermann – G11

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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], D86g - 7…O-O 8.Ne2 Nc6 - Classical Exchange Simagin Improved [+0.41], SÉRIE D
1954 Gorki ch22-SU sf – Round 17 – Liavdansky, Vladimir – 1-0 – Boleslavsky, Isaac – G48

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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 Kiev ch-URS – Round 1 – Lilienthal, Andor – 0-1 – Korchnoi, Viktor – G84

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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 Kiev ch-URS – Round 1 – Sokolsky, Alexey – 1/2-1/2 – Suetin, Alexey S – G83

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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 Munich zt – Round 11 – Mulcahy, Edmond – 0-1 – Unzicker, Wolfgang – G68

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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 New York ch-USA – Round 7 – Berliner, Hans – 0-1 – Seidman, Herbert – G27

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