E55b — Nimzo-Indian: Main Line, Bronstein, 9.a3
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O dxc4 8.Bxc4 Nbd7 9.a3 * ● Trait aux Noirs
Ouverture — Centre semi-ouvert
♔ Point de vue Blancs
8
7
6
5
4
3
2
1
abcdefgh
Avantages : majorité centre (2v1), case forte b5, case forte e5, Bc4 actif, paire de fous, colonne c.
Faiblesses adverses : Bc8 enfermé.
Problèmes : Bc1 enfermé, arriéré b2.
Plans :
● Bd2 — Développer Bc1
● h3 — Empêcher ...Bg4
● Rc — Tour sur colonne c
Faiblesses adverses : Bc8 enfermé.
Problèmes : Bc1 enfermé, arriéré b2.
Plans :
● Bd2 — Développer Bc1
● h3 — Empêcher ...Bg4
● Rc — Tour sur colonne c
♚ Point de vue Noirs
1
2
3
4
5
6
7
8
hgfedcba
Avantages : majorité aile_dame (3v2), avant-poste d5(C), paire de fous, colonne d.
Faiblesses adverses : arriéré b2, Bc1 enfermé.
Problèmes : Bc8 enfermé.
Plans :
● b6+Bb7 — PRIORITÉ: libérer le Bc8 (b6+Bb7, ...Bg4, ...Bf5)
● ...Bg4 — Clouer Nf3
● ...e5 — Rupture
● ...Rd — Tour sur colonne d
Faiblesses adverses : arriéré b2, Bc1 enfermé.
Problèmes : Bc8 enfermé.
Plans :
● b6+Bb7 — PRIORITÉ: libérer le Bc8 (b6+Bb7, ...Bg4, ...Bf5)
● ...Bg4 — Clouer Nf3
● ...e5 — Rupture
● ...Rd — Tour sur colonne d
Avantages
Faiblesses adverses
Diagonale active
Plans
Structure de pions
| ♔ Blancs | ♚ Noirs | |
| Pions doublés | — | — |
| Pions isolés | — | — |
| Arriérés | ● b2 | — |
| Chaînes | ● b2→a3, f2→e3, e3→d4 | ● f7→e6 |
| Passés | — | — |
| Majorité | ● centre 2v1 | ● aile_dame 3v2 |
Cases
| ♔ Blancs | ♚ Noirs | |
| Cases fortes | ● b5 (2v0), ● e5 (2v1) | — |
| Cases faibles | — | — |
| Centre | ● d4 (3v1), ● e5 (2v1) | — |
Colonnes et diagonales
| ♔ Blancs | ♚ Noirs | |
| Semi-ouvertes | ● c | ● d |
Pièces
| ♔ Blancs | ♚ Noirs | |
| Bc1 | ● Bc1 Non développé (mob. 1) | |
| Bc4 | ● Bc4 Actif (mob. 8) | |
| Bb4 | ● Bb4 Ok (mob. 3) | |
| Bc8 | ● Bc8 Non développé (mob. 0) | |
| Paire de fous | ● Oui | ● Oui |
| Non développées | 2 (c1, a1) | 2 (c8, a8) |
Sécurité du roi
| ♔ Blancs | ♚ Noirs | |
| Statut | ● Roqué | ● Roqué |
| Droits de roque | — | — |
Thèmes
| ♔ Blancs | ♚ Noirs | |
| Phase | Ouverture | |
| Centre | semi-ouvert | |
| Ruptures | ● d4-d5, ● e3-e4 | ● …e6-e5 |
| Partie |
|---|
| 19. Amber Rapid 2010 – Round 1 – Aronian, Levon – 1-0 – Karjakin, Sergey – G1 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O dxc4 8. Bxc4 Nbd7 9. a3 cxd4 10. axb4 dxc3 |
| 1971 Hoogovens – Round 5 – Mecking, Henrique – 1/2-1/2 – Korchnoi, Viktor – G75 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 c5 6. Nf3 d5 7. O-O dxc4 8. Bxc4 Nbd7 9. a3 cxd4 10. Qxd4 Bxc3 |
| 36. Olympiad 2004 – Round 12 – Aleksandrov, Aleksej – 1/2-1/2 – Adams, Michael – G418 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O dxc4 8. Bxc4 Nbd7 9. a3 Ba5 10. Nb5 cxd4 |
| 40. Olympiad Open 2012 – Round 10.13 – Illescas Cordoba, Miguel – 1/2-1/2 – Banikas, Hristos – G543 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O dxc4 8. Bxc4 Nbd7 9. a3 cxd4 10. axb4 dxc3 |
| Corus 2001 – Round 6 – Kramnik, Vladimir – 1/2-1/2 – Anand, Viswanathan – G36 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O dxc4 8. Bxc4 Nbd7 9. a3 cxd4 10. axb4 dxc3 |
| FIDE WCh KO 2000 – Round 5.6 – Khalifman, Alexander – 1/2-1/2 – Anand, Viswanathan – G61 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O dxc4 8. Bxc4 Nbd7 9. a3 cxd4 10. axb4 dxc3 |
| FIDE WCh KO 2001 – Round 1.1 – Sarthou, Gaetan – 0-1 – Adams, Michael – G15 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O dxc4 8. Bxc4 Nbd7 9. a3 Ba5 10. Qe2 a6 |
| GpB 2003 – Round 5 – Lautier, Joel – 1/2-1/2 – Anand, Viswanathan – G17 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 c5 6. Nf3 d5 7. O-O dxc4 8. Bxc4 Nbd7 9. a3 cxd4 10. axb4 dxc3 |
| Interpolis 1984 – Round 1 – Miles, Anthony J – 1/2-1/2 – Ribli, Zoltan – G17 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 c5 6. Nf3 d5 7. O-O dxc4 8. Bxc4 Nbd7 9. a3 cxd4 10. Qxd4 Bxc3 |
| Luzern olm 1982 – Round 12 – Korchnoi, Viktor – 1-0 – Ljubojevic, Ljubomir – G52 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O dxc4 8. Bxc4 Nbd7 9. a3 Bxc3 10. bxc3 b6 |
| Olympiad 2002 – Round 9 – Aleksandrov, Aleksej – 0-1 – Adams, Michael – G289 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O dxc4 8. Bxc4 Nbd7 9. a3 Ba5 10. Qe2 cxd4 |
| World Rapid 2016 – Round 11.46 – Agdestein, Simen – 0-1 – Aleksandrov, Aleksej – G436 1. c4 e6 2. Nf3 d5 3. d4 Nf6 4. Nc3 Bb4 5. e3 O-O 6. Bd3 c5 7. O-O dxc4 8. Bxc4 Nbd7 9. a3 cxd4 10. axb4 dxc3 |
| XXIII SuperGM 2006 – Round 3 – Aronian, Levon – 1/2-1/2 – Topalov, Veselin – G10 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 c5 6. Nf3 d5 7. O-O dxc4 8. Bxc4 Nbd7 9. a3 cxd4 10. axb4 dxc3 |
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- E20-E59 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 Nimzo-Indian defence, E55 - 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O dxc4 8.Bxc4 Nbd7 - Nimzo-Indian [+0.28], E55b - 9.a3 - Main Line Bronstein [+0.23], SÉRIE E
19. Amber Rapid 2010 – Round 1 – Aronian, Levon – 1-0 – Karjakin, Sergey – G1
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-
- E20-E59 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 Nimzo-Indian defence, E55 - 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O dxc4 8.Bxc4 Nbd7 - Nimzo-Indian [+0.28], E55b - 9.a3 - Main Line Bronstein [+0.23], SÉRIE E
1971 Hoogovens – Round 5 – Mecking, Henrique – 1/2-1/2 – Korchnoi, Viktor – G75
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- E20-E59 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 Nimzo-Indian defence, E55 - 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O dxc4 8.Bxc4 Nbd7 - Nimzo-Indian [+0.28], E55b - 9.a3 - Main Line Bronstein [+0.23], SÉRIE E
36. Olympiad 2004 – Round 12 – Aleksandrov, Aleksej – 1/2-1/2 – Adams, Michael – G418
- Lire la suite
-
- E20-E59 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 Nimzo-Indian defence, E55 - 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O dxc4 8.Bxc4 Nbd7 - Nimzo-Indian [+0.28], E55b - 9.a3 - Main Line Bronstein [+0.23], SÉRIE E
40. Olympiad Open 2012 – Round 10.13 – Illescas Cordoba, Miguel – 1/2-1/2 – Banikas, Hristos – G543
- Lire la suite
-
- E20-E59 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 Nimzo-Indian defence, E55 - 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O dxc4 8.Bxc4 Nbd7 - Nimzo-Indian [+0.28], E55b - 9.a3 - Main Line Bronstein [+0.23], SÉRIE E
Corus 2001 – Round 6 – Kramnik, Vladimir – 1/2-1/2 – Anand, Viswanathan – G36
- Lire la suite
-
- E20-E59 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 Nimzo-Indian defence, E55 - 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O dxc4 8.Bxc4 Nbd7 - Nimzo-Indian [+0.28], E55b - 9.a3 - Main Line Bronstein [+0.23], SÉRIE E
FIDE WCh KO 2000 – Round 5.6 – Khalifman, Alexander – 1/2-1/2 – Anand, Viswanathan – G61
- Lire la suite
-
- E20-E59 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 Nimzo-Indian defence, E55 - 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O dxc4 8.Bxc4 Nbd7 - Nimzo-Indian [+0.28], E55b - 9.a3 - Main Line Bronstein [+0.23], SÉRIE E
FIDE WCh KO 2001 – Round 1.1 – Sarthou, Gaetan – 0-1 – Adams, Michael – G15
- Lire la suite
-
- E20-E59 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 Nimzo-Indian defence, E55 - 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O dxc4 8.Bxc4 Nbd7 - Nimzo-Indian [+0.28], E55b - 9.a3 - Main Line Bronstein [+0.23], SÉRIE E
GpB 2003 – Round 5 – Lautier, Joel – 1/2-1/2 – Anand, Viswanathan – G17
- Lire la suite
-
- E20-E59 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 Nimzo-Indian defence, E55 - 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O dxc4 8.Bxc4 Nbd7 - Nimzo-Indian [+0.28], E55b - 9.a3 - Main Line Bronstein [+0.23], SÉRIE E
Interpolis 1984 – Round 1 – Miles, Anthony J – 1/2-1/2 – Ribli, Zoltan – G17
- Lire la suite
-
- E20-E59 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 Nimzo-Indian defence, E55 - 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O dxc4 8.Bxc4 Nbd7 - Nimzo-Indian [+0.28], E55b - 9.a3 - Main Line Bronstein [+0.23], SÉRIE E
Luzern olm 1982 – Round 12 – Korchnoi, Viktor – 1-0 – Ljubojevic, Ljubomir – G52
- Lire la suite
-
- E20-E59 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 Nimzo-Indian defence, E55 - 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O dxc4 8.Bxc4 Nbd7 - Nimzo-Indian [+0.28], E55b - 9.a3 - Main Line Bronstein [+0.23], SÉRIE E
Olympiad 2002 – Round 9 – Aleksandrov, Aleksej – 0-1 – Adams, Michael – G289
- Lire la suite
-
- E20-E59 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 Nimzo-Indian defence, E55 - 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O dxc4 8.Bxc4 Nbd7 - Nimzo-Indian [+0.28], E55b - 9.a3 - Main Line Bronstein [+0.23], SÉRIE E
World Rapid 2016 – Round 11.46 – Agdestein, Simen – 0-1 – Aleksandrov, Aleksej – G436
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