A33e — English: Symmetrical, Two Knights, 5.Nc3 Nc6 6.a3

1.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Nc6 6.a3 * ● Trait aux Noirs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

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Avantages : majorité aile_dame (3v2), case forte b5, paire de fous, colonne d.
Faiblesses adverses : arriéré d7, Bc8 enfermé, Bf8 enfermé, roi noir au centre.
Problèmes : roi au centre, Bc1 enfermé, Bf1 enfermé, arriéré b2, 4 pièces non développées (C1, F1, A1, H1).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● e4 — Centre d4+e4, menace e5, libère Bf1
● Bg5 — Clouer Nf6
● Rd — Tour sur colonne d

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : majorité centre (2v1), paire de fous, colonne c.
Faiblesses adverses : arriéré b2, Bc1 enfermé, Bf1 enfermé, roi blanc au centre.
Problèmes : roi au centre, Bc8 enfermé, Bf8 enfermé, arriéré d7, 4 pièces non développées (C8, F8, A8, H8).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● ...d6 — Libérer Bc8
● ...Be7 — Développer Bf8
● ...d5 — Rupture
● ...e5 — Rupture

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	● b2	● d7
Chaînes	● b2→a3	● d7→e6, f7→e6
Passés	—	—
Majorité	● aile_dame 3v2	● centre 2v1

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● b5 (3v0)	—
Cases faibles	—	—
Centre	—	● e5 (1v0)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● d	● c

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bf1	● Bf1 Non développé (mob. 0)
Bc8		● Bc8 Non développé (mob. 0)
Bf8		● Bf8 Non développé (mob. 5)
Paire de fous	● Oui	● Oui
Non développées	4 (c1, f1, a1, h1)	4 (c8, f8, 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	semi-ouvert
Ruptures	● c4-c5, ● e2-e3, ● f2-f3	● …d7-d6, ● …d7-d5, ● …e6-e5

Partie
? 2000 – Round ? – Savon, Vladimir A – 1/2-1/2 – Eljanov, Pavel – G117 1. Nf3 c5 2. c4 Nc6 3. d4 cxd4 4. Nxd4 e6 5. Nc3 Nf6 6. a3 d5 7. cxd5 exd5 8. Bg5 Be7 9. e3 O-O 10. Be2 Be6
18. Amber Blindfold 2009 – Round 8 – Carlsen, Magnus – 1-0 – Topalov, Veselin – G17 1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. Nc3 cxd4 5. Nxd4 Nc6 6. a3 Be7 7. e4 O-O 8. Nc2 b6 9. f4 Bb7 10. Bd3 Rc8
20. European Teams 2015 – Round 9.17 – Short, Nigel D – 1-0 – Parligras, Mircea-Emilian – G381 1. c4 Nf6 2. Nc3 c5 3. Nf3 Nc6 4. d4 cxd4 5. Nxd4 e6 6. a3 Be7 7. Bf4 d5 8. e3 O-O 9. Be2 Nxd4 10. Qxd4 dxc4
40. Olympiad Open 2012 – Round 4.7 – Ftacnik, Lubomir – 1/2-1/2 – Leko, Peter – G286 1. Nf3 c5 2. c4 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. a3 Be7 7. e4 O-O 8. Be2 d5 9. exd5 exd5 10. O-O Nxd4
40. Olympiad Open 2012 – Round 8.8 – Sasikiran, Krishnan – 0-1 – Ivanisevic, Ivan – G481 1. d4 Nf6 2. c4 c5 3. Nf3 cxd4 4. Nxd4 Nc6 5. Nc3 e6 6. a3 Be7 7. g3 Qb6 8. Nc2 d5 9. Bg2 dxc4 10. Be3 Qa5
41. Olympiad Open 2014 – Round 10.13 – Vazquez Igarza, Renier – 1/2-1/2 – Khusnutdinov, Rafael – G692 1. Nf3 c5 2. c4 Nf6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 e6 6. a3 Be7 7. e4 O-O 8. Be2 d5 9. cxd5 exd5 10. Nxc6 bxc6
41. Olympiad Open 2014 – Round 8.10 – Anton Guijarro, David – 1/2-1/2 – Grischuk, Alexander – G540 1. Nf3 c5 2. c4 Nc6 3. d4 cxd4 4. Nxd4 e6 5. Nc3 Nf6 6. a3 Be7 7. e4 O-O 8. Nf3 Qc7 9. Be2 b6 10. O-O Bb7
6. Norway Chess 2018 – Round 5.1 – Carlsen, Magnus – 1/2-1/2 – Anand, Viswanathan – G20 1. c4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. a3 Be7 7. e4 O-O 8. Nf3 Qa5 9. Bd2 Qh5 10. Be2 d5
85. Tata Steel Masters 2023 – Round 10.6 – Gukesh D – 1-0 – Praggnanandhaa R – G69 1. c4 c5 2. Nf3 Nf6 3. Nc3 Nc6 4. d4 cxd4 5. Nxd4 e6 6. a3 Be7 7. e4 O-O 8. Nf3 Qa5 9. Bd2 Qh5 10. Rg1 d5
Amber Rapid 2005 – Round 3 – Vallejo Pons, Francisco – 0-1 – Anand, Viswanathan – G10 1. Nf3 c5 2. c4 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. a3 Be7 7. e4 O-O 8. Nf3 b6 9. Be2 Bb7 10. O-O Qc7
ARM-ROW Match 2004 – Round 1 – Kasparov, Garry – 1-0 – Van Wely, Loek – G6 1. Nf3 Nf6 2. c4 c5 3. Nc3 Nc6 4. d4 cxd4 5. Nxd4 e6 6. a3 Nxd4 7. Qxd4 b6 8. Qf4 Be7 9. e4 d6 10. Qg3 O-O
Baku FIDE Grand Prix 2014 – Round 5.6 – Karjakin, Sergey – 1/2-1/2 – Kasimdzhanov, Rustam – G30 1. c4 Nf6 2. Nc3 c5 3. Nf3 Nc6 4. d4 cxd4 5. Nxd4 e6 6. a3 d5 7. cxd5 exd5 8. Bg5 Bc5 9. e3 Bxd4 10. exd4 h6
Corus A 2009 – Round 8 – Radjabov, Teimour – 1/2-1/2 – Dominguez Perez, Leinier – G47 1. c4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. a3 Be7 7. e4 O-O 8. Nf3 Qc7 9. Bd3 Ng4 10. Nb5 Qb8
FIDE World Cup 2017 – Round 3.3 – Lenderman, Aleksandr – 0-1 – Vachier-Lagrave, Maxime – G351 1. Nf3 c5 2. c4 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. a3 Be7 7. e4 O-O 8. Nf3 Qc7 9. Be2 b6 10. O-O Bb7
GCT Rapid Paris 2019 – Round 2.2 – Nepomniachtchi, Ian – 1/2-1/2 – Dubov, Daniil – G7 1. c4 Nf6 2. Nc3 c5 3. Nf3 Nc6 4. d4 cxd4 5. Nxd4 e6 6. a3 d5 7. cxd5 exd5 8. Bg5 Bc5 9. e3 Bxd4 10. exd4 O-O
Jerusalem FIDE Grand Prix 2019 – Round 2.3 – So, Wesley – 1/2-1/2 – Nepomniachtchi, Ian – G52 1. Nf3 c5 2. c4 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. a3 Be7 7. e4 O-O 8. Nf3 Qa5 9. Bd2 Qh5 10. Be2 d5
Koop Tjuchem 1996 – Round 9 – Sokolov, Ivan. – 1/2-1/2 – Leko, Peter – G39 1. Nf3 Nf6 2. c4 c5 3. Nc3 Nc6 4. d4 cxd4 5. Nxd4 e6 6. a3 Nxd4 7. Qxd4 b6 8. e4 Bc5 9. Qd1 Bb7 10. Bd3 O-O
NAO Masters 2002 – Round 8 – Lautier, Joel – 0-1 – Topalov, Veselin – G38 1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. Nc3 cxd4 5. Nxd4 Nc6 6. a3 Nxd4 7. Qxd4 b6 8. Qf4 Bb7 9. e4 d6 10. Bd3 Nd7
Norway Supreme Masters Blitz 2013 – Round 2.5 – Nakamura, Hikaru – 0-1 – Karjakin, Sergey – G10 1. c4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. a3 Be7 7. g3 d5 8. Bg2 O-O 9. cxd5 exd5 10. O-O Re8
Saint Louis Blitz 2017 – Round 17.5 – Navara, David – 1/2-1/2 – Anand, Viswanathan – G85 1. c4 c5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 cxd4 5. Nxd4 e6 6. a3 d5 7. cxd5 exd5 8. Bg5 Bc5 9. e3 Bxd4 10. exd4 O-O
Saint Louis Blitz 2018 – Round 8.2 – So, Wesley – 1/2-1/2 – Vachier-Lagrave, Maxime – G37 1. c4 c5 2. Nf3 Nf6 3. d4 cxd4 4. Nxd4 e6 5. Nc3 Nc6 6. a3 Be7 7. e4 O-O 8. Nf3 Qa5 9. Bd2 Qh5 10. Be2 d5
Superbet Blitz 2022 – Round 2.4 – Korobov, Anton – 1/2-1/2 – Anand, Viswanathan – G9 1. c4 c5 2. Nf3 Nf6 3. Nc3 Nc6 4. d4 cxd4 5. Nxd4 e6 6. a3 d5 7. cxd5 exd5 8. g3 Bc5 9. Be3 Bb6 10. Bg2 O-O
SuperUnited Blitz 2022 – Round 15.4 – Topalov, Veselin – 1-0 – Dominguez Perez, Leinier – G74 1. c4 c5 2. Nf3 Nf6 3. Nc3 Nc6 4. d4 cxd4 5. Nxd4 e6 6. a3 Be7 7. e4 O-O 8. Nf3 Qa5 9. Bd3 d5 10. O-O d4
Tal Memorial 2008 – Round 3 – Ponomariov, Ruslan – 1/2-1/2 – Mamedyarov, Shakhriyar – G13 1. Nf3 c5 2. c4 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. a3 d5 7. cxd5 exd5 8. g3 Bc5 9. Nxc6 bxc6 10. Bg2 O-O
WCh 2007 – Round 4 – Aronian, Levon – 1-0 – Leko, Peter – G10 1. c4 c5 2. Nf3 Nf6 3. d4 cxd4 4. Nxd4 e6 5. Nc3 Nc6 6. a3 Be7 7. e4 O-O 8. Nf3 d6 9. Be2 b6 10. O-O Bb7
World Blitz 2009 – Round 37 – Carlsen, Magnus – 1/2-1/2 – Gelfand, Boris – G381 1. d4 Nf6 2. c4 e6 3. Nc3 c5 4. Nf3 cxd4 5. Nxd4 Nc6 6. a3 Be7 7. g3 Qb6 8. Nf3 O-O 9. Bg2 Rd8 10. O-O d5
World Blitz 2015 – Round 14.11 – Fridman, Daniel – 1/2-1/2 – Leko, Peter – G849 1. Nf3 Nf6 2. c4 c5 3. Nc3 Nc6 4. d4 cxd4 5. Nxd4 e6 6. a3 Be7 7. e4 O-O 8. Be2 d5 9. exd5 exd5 10. O-O Nxd4
World Blitz 2015 – Round 19.25 – Wojtaszek, Radoslaw – 1-0 – Borisek, Jure – G1176 1. Nf3 c5 2. c4 Nf6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 e6 6. a3 Be7 7. e4 O-O 8. Nf3 Qa5 9. Bd2 Qh5 10. Be2 d5
World Blitz 2016 – Round 1.6 – Grandelius, Nils – 1/2-1/2 – Vachier-Lagrave, Maxime – G44 1. Nf3 c5 2. c4 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. a3 Be7 7. g3 d5 8. Bg2 Qb6 9. Nxc6 bxc6 10. O-O O-O
World Blitz 2017 – Round 5.4 – Saini Vidit – 0-1 – Vachier-Lagrave, Maxime – G265 1. Nf3 c5 2. c4 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. a3 Be7 7. e4 O-O 8. Nf3 Qa5 9. Bd2 Qh5 10. Be2 d5
World Blitz Final 2012 – Round 29 – Jumabayev, Rinat – 1-0 – Andreikin, Dmitry – G220 1. d4 Nf6 2. c4 c5 3. Nf3 cxd4 4. Nxd4 Nc6 5. Nc3 e6 6. a3 Be7 7. e4 O-O 8. Nf3 d6 9. Be2 b6 10. O-O Bb7
World Cup 1988 – Round 1 – Speelman, Jon S – 1/2-1/2 – Timman, Jan H – G89 1. Nf3 c5 2. c4 Nf6 3. Nc3 Nc6 4. d4 cxd4 5. Nxd4 e6 6. a3 d5 7. cxd5 exd5 8. Bg5 Be7 9. e3 O-O 10. Bb5 Bg4
World Rapid 2016 – Round 9.8 – Bu, Xiangzhi – 0-1 – Vachier-Lagrave, Maxime – G367 1. Nf3 c5 2. c4 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. a3 Be7 7. e4 O-O 8. Nf3 Qc7 9. Be2 b6 10. O-O Bb7
World Rapid 2019 – Round 12.15 – Sargissian, Gabriel – 1/2-1/2 – Perunovic, Milos – G758 1. d4 Nf6 2. Nf3 e6 3. c4 c5 4. Nc3 cxd4 5. Nxd4 Nc6 6. a3 Nxd4 7. Qxd4 b6 8. Bg5 Bc5 9. Qd2 Bb7 10. e3 h6
XXII SuperGM 2005 – Round 7 – Vallejo Pons, Francisco – 1/2-1/2 – Leko, Peter – G19 1. Nf3 c5 2. c4 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. a3 Be7 7. g3 Qb6 8. e3 d5 9. cxd5 Nxd5 10. Nxd5 exd5

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