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- D50-D69 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Queen's Gambit Declined, 4.Bg5, D60 - 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 - QGD, D60f - 7.Bd3 c6 - Orthodox Botvinnik, SÉRIE D
1931 Moskou ch-URS – Round 1 – Botvinnik, Mikhail – 1/2-1/2 – Bohatyrchuk, Fedir Parfenovych – G17
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