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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
1963 Bath ch-BCF – Round 7 – Bowen Solines, Alec – 0-1 – Hollis, Adrian – G60

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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
1963 Corr – Round ? – Oakley, Peter James – 0-1 – Dubinin, Peter – 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
1963 Corr – Round 1 – Berliner, Hans – 1-0 – Messere, Kenneth Charles – G7

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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
1963 Halle zt – Round 1 – Johannessen, Simon T – 0-1 – Larsen, Benjamin Holsko – G52

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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
1963 LAT Ch – Round ? – Kalnins, Aleksandrs Alans – 0-1 – Klovans, Janis – G29

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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
1963 Miskolc Asztalos Memorial – Round 14 – Lokvenc, Josef – 0-1 – Filip, Miroslav – G21

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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
1964 Buenos Aires Ch – Round ? – Cruz, Raul C. – 1-0 – Reinhardt, Enrique – G30

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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
1964 DEN Ch Holstebro – Round 8 – Pedersen, Eigil – 1/2-1/2 – From, Sigfred – G27

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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
1964 Hastings6465 – Round 4 – Rocha, Antonio – 0-1 – Keres, Paul Petrovich – G16

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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
1964 Moscow Ch – Round ? – Shatskes, Boris A – 0-1 – Yudovich, Mikhail M – G44

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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
1964 Moscow zt – Round 11 – Spassky, Boris Vasily – 1/2-1/2 – Stein, Leonid – G12

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