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- A10-A39 English Opening, A28 - 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. d3 - English Opening: King's English Variation, Four Knights Variation, Flexible Line, A28 - 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4.... - English Opening, SÉRIE A
Smyslov Region Group Cup 2021 – Round 2.8 – Zvjaginsev, Vadim – 1/2-1/2 – Sarana, Alexey – G19

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- 5.c3 (not 5...dxe4, 5...Nxe4, 5...c6), B07 - 1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Be3 c6 5. Qd2 - Pirc Defense: 150 Attack, B07 1. e4 d6 2. d4 Nf6 3. Nc3 Pirc defence, B07-B09 1. e4 d6 2. d4 Nf6 3. Nc3 Pirc defence, SÉRIE B 1.e4 2....
Smyslov Region Group Cup 2021 – Round 3.3 – Matlakov, Maxim – 1-0 – Zvjaginsev, Vadim – G25

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- 7...c5 8.Be3 Bg4, D80-D99 Gruenfeld defence1. d4 Nf6 2. c4 g6 3. Nc3 d5, D85 - 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Nf3 - Grünfeld Defense: Exchange Variation, Modern Exchange Variation, D85 - 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5- Grünfeld Defense, SÉRIE D
Smyslov Region Group Cup 2021 – Round 3.6 – Ponkratov, Pavel – 0-1 – Chigaev, Maksim – G28

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