E00r — Catalan: 4.Nf3 Bb4+ 5.Bd2

1.d4 Nf6 2.c4 e6 3.g3 d5 4.Nf3 Bb4+ 5.Bd2 * ● Trait aux Noirs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : case forte f4, case forte e5, case forte g5, Bd2 actif, paire de fous.
Faiblesses adverses : Bc8 enfermé, roi noir au centre, bishop b4 en prise.
Problèmes : roi au centre, Bf1 enfermé, 4 pièces non développées (B1, F1, A1, H1).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● e4 — Centre d4+e4, menace e5, libère Bf1
● Nc3 — Développer Nb1
● h3 — Empêcher ...Bg4

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : case forte e4, Bb4 actif, paire de fous.
Faiblesses adverses : Bf1 enfermé, roi blanc au centre, pawn c4 en prise.
Problèmes : roi au centre, Bc8 enfermé, 4 pièces non développées (B8, C8, A8, H8).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● ...Bd7 — PRIORITÉ: libérer le Bc8 (...Bd7, b6+Bb7, ...Bg4, ...Bf5)
● ...Nbd7 — Développer Nb8
● ...Bg4 — Clouer Nf3
● ...e5 — Rupture

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● f2→g3, h2→g3	● e6→d5, f7→e6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● f4 (2v0), ● e5 (2v0), ● g5 (2v0)	● e4 (2v0)
Cases faibles	—	—
Centre	● d4 (1v0), ● e5 (2v0)	● d5 (3v1), ● e4 (2v0)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bf1	● Bf1 Non développé (mob. 2)
Bd2	● Bd2 Actif (mob. 7)
Bb4		● Bb4 Actif (mob. 8)
Bc8		● Bc8 Non développé (mob. 1)
Paire de fous	● Oui	● Oui
Clouages	● bishop d2	—
Non développées	4 (b1, f1, a1, h1)	4 (b8, c8, a8, h8)

Sécurité du roi

	♔ Blancs	♚ Noirs
Statut	● Au centre !	● Au centre !
Droits de roque	O-O / O-O-O	O-O / O-O-O

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	fermé
Ruptures	● c4-c5	● …e6-e5

Partie
1. GRENKE Chess Classic 2013 – Round 5.2 – Meier, Georg – 1/2-1/2 – Adams, Michael – G11 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Nf3 Bb4+ 5. Bd2 Bd6 6. Nc3 O-O 7. Bg5 c6 8. Bg2 Nbd7 9. e4 dxe4 10. Nxe4 Bb4+
20. European Teams 2015 – Round 2.13 – Brunello, Sabino – 1/2-1/2 – Neiksans, Arturs – G69 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Nf3 Bb4+ 5. Bd2 Bd6 6. Bg2 Nbd7 7. O-O c6 8. Qc2 O-O 9. Bg5 h6 10. Bxf6 Qxf6
20. European Teams 2015 – Round 4.6 – Hansen, Sune Berg – 1/2-1/2 – Carlsen, Magnus – G181 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Bb4+ 5. Bd2 Bd6 6. Bg2 c6 7. O-O Nbd7 8. Nc3 dxc4 9. Bg5 O-O 10. Qc2 b5
20. European Teams 2015 – Round 8.2 – Mchedlishvili, Mikheil – 1/2-1/2 – Fressinet, Laurent – G339 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Bb4+ 5. Bd2 Bd6 6. Nc3 Nc6 7. Bg5 dxc4 8. e4 e5 9. dxe5 Nxe5 10. Nxe5 Bxe5
41. Olympiad Open 2014 – Round 10.29 – Kovalyov, Anton – 1-0 – Winants, Luc – G718 1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. d4 Bb4+ 5. Bd2 Bxd2+ 6. Nbxd2 O-O 7. Bg2 b6 8. cxd5 exd5 9. O-O Bb7 10. Rc1 Nbd7
42. Olympiad 2016 – Round 1.29 – Lupulescu, Constantin – 1-0 – Pace, Charles – G43 1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. g3 Bb4+ 5. Bd2 Bd6 6. Nc3 Nbd7 7. c5 Be7 8. Bg2 O-O 9. O-O c6 10. b4 Ne4
43. Olympiad 2018 – Round 1.27 – Kayastha, Madan Krishna – 0-1 – Hansen, Eric – G39 1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. g3 Bb4+ 5. Bd2 Bd6 6. Bg2 c6 7. Nc3 Nbd7 8. e4 Nxe4 9. Nxe4 dxe4 10. Ng5 f5
43. Olympiad 2018 – Round 10.8 – Rodshtein, Maxim – 1/2-1/2 – Ismagambetov, Anuar – G690 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Bb4+ 5. Bd2 Bd6 6. Nc3 c6 7. Qc2 Nbd7 8. e4 dxe4 9. Nxe4 Nxe4 10. Qxe4 c5
43. Olympiad 2018 – Round 9.28 – Berend, Fred – 0-1 – Parligras, Mircea-Emilian – G592 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 Bb4+ 5. Bd2 Bd6 6. Qb3 O-O 7. Bg2 c6 8. Bb4 b6 9. Bxd6 Qxd6 10. O-O Ba6
45. Biel GM 2012 – Round 2 – Nakamura, Hikaru – 1/2-1/2 – Giri, Anish – G6 1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. g3 Bb4+ 5. Bd2 Bxd2+ 6. Nbxd2 O-O 7. Bg2 b6 8. O-O Bb7 9. cxd5 Bxd5 10. Re1 Nbd7
6. Zurich Opening Blitz 2017 – Round 6.1 – Gelfand, Boris – 1/2-1/2 – Kramnik, Vladimir – G21 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Bb4+ 5. Bd2 Bd6 6. Nc3 O-O 7. Bg5 c6 8. e4 dxe4 9. Nxe4 Bb4+ 10. Nc3 h6
78. Tata Steel GpA 2016 – Round 6.2 – Giri, Anish – 1-0 – Mamedyarov, Shakhriyar – G38 1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. d4 Bb4+ 5. Bd2 Bd6 6. Bg2 O-O 7. O-O Nbd7 8. b3 dxc4 9. bxc4 c5 10. e3 Qc7
79. Tata Steel GpA 2017 – Round 3.1 – Andreikin, Dmitry – 1/2-1/2 – Carlsen, Magnus – G15 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Bb4+ 5. Bd2 Bd6 6. Bg2 O-O 7. O-O Nbd7 8. Qc2 c6 9. Bf4 Bxf4 10. gxf4 b6
83. Tata Steel Masters 2021 – Round 10.1 – Caruana, Fabiano – 1/2-1/2 – Carlsen, Magnus – G67 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Nf3 Bb4+ 5. Bd2 Bd6 6. Bg2 c6 7. Nc3 O-O 8. Bg5 h6 9. Bxf6 Qxf6 10. Qb3 Nd7
84. Tata Steel Masters 2022 – Round 5.7 – Dubov, Daniil – 1/2-1/2 – Shankland, Sam – G34 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 Bb4+ 5. Bd2 a5 6. Bg2 O-O 7. Qc1 Nbd7 8. O-O Be7 9. Rd1 c6 10. Bf4 a4
CCT Final Playoff 2023 – Round 1.2 – Lazavik, Denis – 1/2-1/2 – Carlsen, Magnus – G7 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Bb4+ 5. Bd2 a5 6. Bg2 O-O 7. Qc2 c5 8. cxd5 cxd4 9. Nxd4 Qb6 10. Nf3 exd5
European Club Cup 2015 – Round 5.3 – Pelletier, Yannick – 0-1 – Vitiugov, Nikita – G94 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Bb4+ 5. Bd2 Bd6 6. Bg2 O-O 7. O-O Nbd7 8. Qb3 c6 9. Nc3 Qe7 10. Rad1 dxc4
FIDE Candidates 2013 – Round 6.3 – Kramnik, Vladimir – 1/2-1/2 – Ivanchuk, Vasyl – G23 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Bb4+ 5. Bd2 Bd6 6. Bg2 Nbd7 7. O-O O-O 8. Qc2 c6 9. Nc3 dxc4 10. Rfd1 Qc7
FIDE World Cup 2015 – Round 1.1 – Jumabayev, Rinat – 0-1 – Eljanov, Pavel – G9 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 Bb4+ 5. Bd2 Bd6 6. Bg2 c6 7. Qb3 O-O 8. O-O Nbd7 9. Nc3 Qe7 10. e4 dxc4
Global Chess League 2023 – Round 7.3 – Wei, Yi – 1-0 – Dubov, Daniil – G85 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 Bb4+ 5. Bd2 a5 6. Bg2 O-O 7. Qc2 c5 8. dxc5 d4 9. Bxb4 axb4 10. O-O Nc6
Lindores Abbey Tal Memorial 2021 – Round 11.1 – Erigaisi Arjun – 1-0 – Caruana, Fabiano – G467 1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. g3 Bb4+ 5. Bd2 Bd6 6. Nc3 c6 7. Qc2 O-O 8. e4 dxe4 9. Nxe4 Nxe4 10. Qxe4 c5
Lindores Abbey Tal Memorial 2021 – Round 3.28 – Ernst, Sipke – 0-1 – Cheparinov, Ivan – G139 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Nf3 Bb4+ 5. Bd2 a5 6. Bg2 O-O 7. O-O dxc4 8. Qc2 Bxd2 9. Nbxd2 b5 10. b3 cxb3
Madrid 1996 – Round 3 – Korchnoi, Viktor – 0-1 – Morozevich, Alexander – G10 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Bb4+ 5. Bd2 c5 6. cxd5 exd5 7. Bg2 Nc6 8. O-O O-O 9. Be3 Re8 10. a3 cxd4
Moscow-4teams 1981 – Round 1 – Polugaevsky, Lev – 1-0 – Taimanov, Mark E – G15 1. Nf3 e6 2. c4 Nf6 3. g3 d5 4. d4 Bb4+ 5. Bd2 a5 6. Qc2 Nc6 7. Bg2 dxc4 8. Qxc4 Qd5 9. Qxd5 exd5 10. Nc3 Bf5
Qatar Masters Open 2015 – Round 1.2 – Khotenashvili, Bella – 0-1 – Kramnik, Vladimir – G12 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Bb4+ 5. Bd2 Bd6 6. Nc3 O-O 7. Bg2 c6 8. O-O dxc4 9. e4 Be7 10. Qe2 b5
Qatar Masters Open 2015 – Round 2.3 – So, Wesley – 1-0 – Naroditsky, Daniel – G69 1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. g3 Bb4+ 5. Bd2 Bd6 6. Bg2 c6 7. O-O Nbd7 8. b3 Ne4 9. Bc1 O-O 10. Qc2 f5
Superbet Blitz 2019 – Round 4.3 – Giri, Anish – 1/2-1/2 – Caruana, Fabiano – G18 1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. g3 Bb4+ 5. Bd2 Bd6 6. Bg2 O-O 7. O-O Nbd7 8. c5 Be7 9. Nc3 Ne4 10. Bf4 Nxc3
Tal Memorial Blitz 2014 – Round 19.5 – Inarkiev, Ernesto – 0-1 – Gelfand, Boris – G113 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Bb4+ 5. Bd2 Bd6 6. Bg2 O-O 7. O-O Nbd7 8. Qc2 c6 9. Rd1 Ne4 10. Bc1 Qe7
Tata Steel India Blitz 2018 – Round 7.3 – Vidit, Santosh Gujrathi – 1/2-1/2 – Praggnanandhaa R – G33 1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. g3 Bb4+ 5. Bd2 Bd6 6. Nc3 c6 7. Qc2 O-O 8. e4 e5 9. dxe5 Bg4 10. Be2 dxe4
World Blitz 2009 – Round 35 – Bareev, Evgeny – 1-0 – Kosteniuk, Alexandra – G360 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Bb4+ 5. Bd2 a5 6. Bg2 dxc4 7. O-O c6 8. Bg5 b5 9. Ne5 Ra6 10. b3 cxb3
World Blitz 2015 – Round 1.33 – Naumann, Alexander – 1-0 – Bruzon Batista, Lazaro – G25 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Nf3 Bb4+ 5. Bd2 Bd6 6. Nc3 O-O 7. Qc2 Nbd7 8. Bg2 c6 9. b3 dxc4 10. bxc4 e5
World Blitz 2015 – Round 11.26 – Cheparinov, Ivan – 1-0 – Bluebaum, Matthias – G675 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 Bb4+ 5. Bd2 Bd6 6. Bg2 c6 7. Nc3 Nbd7 8. b3 dxc4 9. bxc4 e5 10. e3 exd4
World Blitz 2015 – Round 21.14 – Bogdanovich, Saveliy Vl – 0-1 – Vitiugov, Nikita – G1289 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Bb4+ 5. Bd2 Bd6 6. Bg2 Nbd7 7. cxd5 exd5 8. Nc3 c6 9. O-O O-O 10. Qc1 Re8
World Blitz 2016 – Round 8.27 – Cheparinov, Ivan – 1/2-1/2 – Bindrich, Falko – G319 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Bb4+ 5. Bd2 Bd6 6. Bg2 O-O 7. O-O c6 8. Nc3 Nbd7 9. b3 dxc4 10. bxc4 e5
World Blitz 2021 – Round 11.22 – Gelfand, Boris – 1-0 – Vokhidov, Shamsiddin – G644 1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. g3 Bb4+ 5. Bd2 a5 6. Bg2 O-O 7. Qc1 Be7 8. O-O c6 9. Bf4 Nbd7 10. Rd1 Nh5
World Blitz 2021 – Round 21.18 – Gelfand, Boris – 1/2-1/2 – Cheparinov, Ivan – G1210 1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. g3 Bb4+ 5. Bd2 a5 6. Bg2 O-O 7. Qc1 Be7 8. O-O c6 9. Bf4 Nbd7 10. Rd1 b6
World Blitz 2021 – Round 21.33 – Sargissian, Gabriel – 1-0 – Harikrishna, Pentala – G1224 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Bb4+ 5. Bd2 a5 6. a3 Bxd2+ 7. Nbxd2 O-O 8. Bg2 b6 9. O-O Bb7 10. Qc2 Nbd7
World Blitz 2022 – Round 1.44 – Gelfand, Boris – 1/2-1/2 – Arjun, Kalyan(excluded) – G34 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Bb4+ 5. Bd2 a5 6. Bg2 O-O 7. Qc1 Be7 8. O-O c6 9. Bf4 Nbd7 10. Rd1 a4
World Blitz 2022 – Round 10.29 – Sargissian, Gabriel – 0-1 – Maghsoodloo, Parham – G523 1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. g3 Bb4+ 5. Bd2 a5 6. Qc2 O-O 7. Bg2 Nbd7 8. O-O c6 9. Bf4 Be7 10. Rd1 Nh5
World Blitz 2022 – Round 11.12 – Andreikin, Dmitry – 1/2-1/2 – Riazantsev, Alexander – G562 1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. g3 Bb4+ 5. Bd2 a5 6. Qc2 O-O 7. Bg2 c5 8. dxc5 d4 9. O-O Bxc5 10. Bg5 h6
World Blitz 2022 – Round 11.46 – Batsuren, Dambasuren – 0-1 – Sargsyan, Shant – G594 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Nf3 Bb4+ 5. Bd2 a5 6. Bg2 O-O 7. Qc2 c5 8. cxd5 cxd4 9. Nxd4 Qb6 10. e3 exd5
World Blitz 2022 – Round 2.24 – Niemann, Hans Moke – 1-0 – Dardha, Daniel – G76 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 Bb4+ 5. Bd2 a5 6. a3 Be7 7. Qc2 O-O 8. Bg2 dxc4 9. Qxc4 b6 10. Nc3 Bb7
World Blitz 2022 – Round 9.26 – Gharibyan, Mamikon – 1/2-1/2 – Riazantsev, Alexander – G464 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Bb4+ 5. Bd2 a5 6. a3 Be7 7. Bg2 O-O 8. O-O Nbd7 9. Qc2 c6 10. Bf4 Nh5
World Blitz 2022 – Round 9.35 – Gelfand, Boris – 1-0 – Najer, Evgeniy – G472 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Bb4+ 5. Bd2 a5 6. Bg2 dxc4 7. a3 Be7 8. Qa4+ Bd7 9. Qxc4 Bc6 10. O-O O-O
World Blitz 2023 – Round 1.23 – Salem, A.R. Saleh – 1-0 – Kosakowski, Jakub – G28 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Bb4+ 5. Bd2 a5 6. Bg2 O-O 7. Qc2 c5 8. cxd5 cxd4 9. Nxd4 Qb6 10. Nf3 exd5
World Blitz 2023 – Round 18.60 – Gaehwiler, Gabriel – 0-1 – Cheparinov, Ivan – G1054 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Bb4+ 5. Bd2 a5 6. Bg2 O-O 7. Qc2 Be7 8. O-O c6 9. Rc1 Nbd7 10. Bf4 h6
World Blitz 2023 – Round 2.30 – Sargsyan, Shant – 1/2-1/2 – Gharibyan, Mamikon – G109 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Bb4+ 5. Bd2 a5 6. Bg2 O-O 7. Qc2 c5 8. cxd5 cxd4 9. a3 Bxd2+ 10. Qxd2 exd5
World Blitz 2023 – Round 7.24 – Lazavik, Denis – 0-1 – Niemann, Hans Moke – G403 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Bb4+ 5. Bd2 a5 6. Bg2 O-O 7. Qc2 Be7 8. O-O c6 9. b3 b6 10. Bc3 Bb7
World Blitz 2023 – Round 7.48 – Suleymenov, Alisher – 0-1 – Kuzubov, Yuriy – G420 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Bb4+ 5. Bd2 Bd6 6. Bg2 O-O 7. O-O Nbd7 8. Nc3 c6 9. Bg5 h6 10. Bxf6 Nxf6
World Blitz 2023 – Round 7.9 – Muradli, Mahammad – 0-1 – Cheparinov, Ivan – G434 1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. g3 Bb4+ 5. Bd2 a5 6. Bg2 O-O 7. Qc1 Be7 8. O-O c6 9. Bg5 Nbd7 10. Rd1 h6
World Rapid 2019 – Round 4.13 – Nepomniachtchi, Ian – 1/2-1/2 – Riazantsev, Alexander – G227 1. c4 e6 2. Nf3 d5 3. d4 Nf6 4. g3 Bb4+ 5. Bd2 a5 6. Bg2 O-O 7. Qc2 c5 8. dxc5 d4 9. Ne5 Bxc5 10. O-O Nbd7
World Rapid 2021 – Round 1.64 – Sargsyan, Shant – 1-0 – Bluebaum, Matthias – G51 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 Bb4+ 5. Bd2 a5 6. Bg2 O-O 7. Qc1 Be7 8. O-O c6 9. Bf4 Nbd7 10. Rd1 Nh5
World Rapid 2021 – Round 10.23 – Svane, Rasmus – 1/2-1/2 – Ivic, Velimir – G578 1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. g3 Bb4+ 5. Bd2 a5 6. Bg2 O-O 7. Qc2 c5 8. cxd5 cxd4 9. a3 Bxd2+ 10. Qxd2 Qxd5
World Rapid 2021 – Round 12.41 – Piorun, Kacper – 1-0 – Ivic, Velimir – G712 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 Bb4+ 5. Bd2 a5 6. Bg2 O-O 7. Qc2 c5 8. cxd5 cxd4 9. Nxd4 Qb6 10. e3 exd5
World Rapid 2021 – Round 3.32 – Fedoseev, Vladimir – 1-0 – Donchenko, Alexander – G158 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Bb4+ 5. Bd2 Bd6 6. Bg2 O-O 7. Bc3 b6 8. Nbd2 Bb7 9. Ne5 Qc8 10. O-O dxc4
World Rapid 2021 – Round 8.6 – Caruana, Fabiano – 1/2-1/2 – Cheparinov, Ivan – G492 1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. g3 Bb4+ 5. Bd2 a5 6. Bg2 O-O 7. O-O dxc4 8. Bg5 c6 9. Ne5 b5 10. a3 Bd6
Zuerich Champions rap 2009 – Round 6 – Topalov, Veselin – 1-0 – Ponomariov, Ruslan – G12 1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. g3 Bb4+ 5. Bd2 Bd6 6. Bg2 O-O 7. Qc2 c6 8. O-O Nbd7 9. Rd1 Ne4 10. Nc3 f5

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