E52h — Nimzo-Indian: Main Line, 6…b6 7.O-O Bb7 8.cxd5 exd5 9.a3

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 b6 7.O-O Bb7 8.cxd5 exd5 9.a3 * ● Trait aux Noirs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : majorité centre (2v1), case forte d4, case forte b5, case forte e5, Bd3 actif, paire de fous, colonne c.
Faiblesses adverses : arriéré c7, bishop b4 en prise.
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), case forte d5, avant-poste e4(C), Bb4 actif, paire de fous, colonne e.
Faiblesses adverses : arriéré b2, Bc1 enfermé.
Problèmes : arriéré c7.
Plans :
● ...Nbd7 — Développer Nb8
● ...Bg4 — Clouer Nf3
● ...Re — Tour sur colonne e

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

E52h — Main Line

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 b6 7.O-O Bb7 8.cxd5 exd5 9.a3

Eval: [+0.21]

Les coups candidats

9…Bd6 — 91.3% (748 parties) →

Ambassadeurs : Tudor, Vasile (8x), Lesiege, Alexandre (7x), Navara, David (6x), Chatalbashev, Boris (6x), Jussupow, Artur (5x), Mauro, Lucio (5x), Neiksans, Arturs (5x), Muir, Andrew J (5x)

9…Be7 — 4.5% (37 parties)

Ambassadeurs : Bogoljubow, Efim (1x), Euwe, Max (1x), Koblencs, Alexander (1x), Neibults, Martins (1x), Vacek, Antonin (1x), Kalendovsky, Jan (1x), Niephaus, Walter (1x), Sahlmann, Walter (1x)

9…Bxc3 — 4.2% (34 parties)

Ambassadeurs : Horowitz, Albert Israel (2x), Buckley, Graeme N (2x), Albert-Kevitz, Alexan (1x), Kevitz, Alexander (1x), Petrosian, Tigran A. (1x), Filip, Marius Liviu (1x), Jedlicka, Ales (1x), Ergh (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	9…Bd6	9…Be7	9…Bxc3
<1800	8	88%	12%	—
1800-2200	157	89%	4%	6%
2200-2600	499	94%	4%	3%
2600+	60	100%	—	—

Évolution par décennie (% des parties)

Décennie	N parties	9…Bd6	9…Be7	9…Bxc3
1920s	1	—	100%	—
1930s	3	33%	—	67%
1950s	14	43%	29%	29%
1960s	8	62%	25%	12%
1970s	6	100%	—	—
1980s	36	86%	11%	3%
1990s	84	89%	4%	7%
2000s	152	89%	6%	5%
2010s	437	95%	2%	3%
2020s	78	91%	8%	1%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
9…Bd6	95%	91%	▼ -4.4%
9…Be7	2%	8%	▲ +5.9%
9…Bxc3	3%	1%	▼ -1.5%

Joueurs célèbres

Champions du monde dans cette position

Euwe, Max — 2 parties
Botvinnik, Mikhail — 1 partie

Parties historiques

9…Bd6 — 91.3% (748 parties)

1932 — Alatortsev, Vladimir N. vs Botvinnik, Mikhail — 0-1 — Leningrad training
1953 — Averbakh, Yuri L vs Ragozin, Viacheslav — 0-1 — Gagra
1953 — Taimanov, Mark vs Averbakh, Yuri L — 1-0 — Garga
1955 — Udovcic, Mijo vs O'Kelly, Albéric de Galway — 1-0 — Zagreb CRO
1956 — Moore, Brian J vs Barden, Leonard — 1/2-1/2 — Blackpool ENG

9…Be7 — 4.5% (37 parties)

1928 — Bogoljubow, Efim vs Euwe, Max — 1-0 — The Netherlands
1950 — Niephaus, Walter vs Sahlmann, Walter — 1/2-1/2 — Bad Pyrmont GER
1954 — Geller, Efim P. vs Lisitsin, Georgy — 1/2-1/2 — Kiev ch-URS
1956 — Koblencs, Alexander vs Neibults, Martins — 1-0 — Riga LAT
1958 — Petrosian, Tigran A. vs Pietzsch, Wolfgang — 1-0 — Munchen olm

9…Bxc3 — 4.2% (34 parties)

1931 — Horowitz, Albert Israel vs Albert-Kevitz, Alexan — 1-0 — New York, NY USA
1931 — Horowitz, Albert Israel vs Kevitz, Alexander — 1-0 — New York, NY USA
1955 — Petrosian, Tigran A. vs Filip, Marius Liviu — 1/2-1/2 — Goteborg SWE
1955 — Udovcic, Mijo vs Matanovic, Aleksandar — 0-1 — Zagreb CRO
1956 — Smith, Phillip D vs Meyer, Milton O — 1-0 — No. California

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	● b2	● c7
Chaînes	● b2→a3, f2→e3, e3→d4	● a7→b6, c7→b6
Passés	—	—
Majorité	● centre 2v1	● aile_dame 3v2

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● d4 (2v0), ● b5 (2v0), ● e5 (2v0)	● d5 (3v1)
Cases faibles	● e4	—
Centre	● d4 (2v0), ● e5 (2v0)	● d5 (3v1)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● c	● e

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 1)
Bd3	● Bd3 Actif (mob. 10)
Bb4		● Bb4 Actif (mob. 6)
Bb7		● Bb7 Ok (mob. 3)
Paire de fous	● Oui	● Oui
Non développées	2 (c1, a1)	2 (b8, a8)

Sécurité du roi

	♔ Blancs	♚ Noirs
Statut	● Roqué	● Roqué
Droits de roque	—	—

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	fermé
Ruptures	● e3-e4	—

Partie
1950 FRG Ch – Round 13 – Niephaus, Walter – 1/2-1/2 – Sahlmann, Walter – G33 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 b6 7. O-O Bb7 8. cxd5 exd5 9. a3 Be7 10. Ne5 Nbd7
1953 URS-training – Round 9 – Taimanov, Mark E – 1-0 – Averbakh, Yuri L – G30 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 b6 7. O-O Bb7 8. cxd5 exd5 9. a3 Bd6 10. b4 Re8
1954 Kiev ch-URS – Round 1 – Geller, Efim P – 1/2-1/2 – Lisitsin, Georgy – G59 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. e3 Bb7 5. Bd3 Bb4+ 6. Nc3 O-O 7. O-O d5 8. cxd5 exd5 9. a3 Be7 10. b4 Nbd7
1955 Gothenburg Interzonal – Round 16 – Petrosian, Tigran A. – 1/2-1/2 – Filip, Marius Liviu – G149 1. c4 Nf6 2. Nc3 e6 3. d4 Bb4 4. e3 O-O 5. Nf3 b6 6. Bd3 Bb7 7. O-O d5 8. cxd5 exd5 9. a3 Bxc3 10. bxc3 Re8
1955 Zagreb – Round 2 – Udovcic, Mijo – 1-0 – O'Kelly, Albéric de Galway – G34 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 b6 7. O-O Bb7 8. cxd5 exd5 9. a3 Bd6 10. Ne5 Re8
1955 Zagreb – Round 6 – Udovcic, Mijo – 0-1 – Matanovic, Aleksandar – G69 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Bd3 Bb7 6. Nf3 O-O 7. O-O d5 8. cxd5 exd5 9. a3 Bxc3 10. bxc3 Ba6
1956 GBR Ch 43rd – Round 5.2 – Moore, Brian J – 1/2-1/2 – Barden, Leonard – G5 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 b6 7. cxd5 exd5 8. O-O Bb7 9. a3 Bd6 10. b4 Nbd7
1956 Leningrad ch-URS – Round 11 – Boleslavsky, Isaac – 0-1 – Taimanov, Mark E – G135 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. e3 O-O 6. Bd3 b6 7. O-O Bb7 8. cxd5 exd5 9. a3 Bd6 10. b4 Re8
1957 DDR Ch 08th – Round 5 – Bertholdt, Dieter – 1-0 – Braun, Gottfried, Dr. – G30 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Nf3 Bb7 6. Bd3 O-O 7. O-O d5 8. cxd5 exd5 9. a3 Bd6 10. b4 Nbd7
1958 Munich olm fin-A – Round 9 – Petrosian, Tigran A. – 1-0 – Pietzsch, Wolfgang – G50 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. e3 Bb7 5. Bd3 Bb4+ 6. Nc3 O-O 7. O-O d5 8. cxd5 exd5 9. a3 Be7 10. b4 c6
1961 Marianske Lazne zt – Round 12 – Olafsson, Fridrik – 1-0 – Bobotsov, Milko G – G82 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 b6 7. O-O Bb7 8. cxd5 exd5 9. a3 Be7 10. b4 a5
1961 Zuerich – Round 10 – Petrosian, Tigran A. – 1/2-1/2 – Kupper, Josef – G48 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. Nc3 Bb4 5. e3 O-O 6. Bd3 Bb7 7. O-O d5 8. cxd5 exd5 9. a3 Bd6 10. b4 Nbd7
1962 Varna olm – Round 1 – Filip, Marius Liviu – 1/2-1/2 – Euwe, Max – G8 1. c4 Nf6 2. Nc3 e6 3. Nf3 Bb4 4. d4 b6 5. e3 Bb7 6. Bd3 O-O 7. O-O d5 8. cxd5 exd5 9. a3 Bd6 10. Qc2 a6
30. ECC Open 2014 – Round 1.5 – Van der Stricht, Geert – 0-1 – Harikrishna, Pentala – G15 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 b6 7. O-O Bb7 8. cxd5 exd5 9. a3 Bd6 10. b4 a6
40. Olympiad Open 2012 – Round 4.7 – Michalik, Peter – 1/2-1/2 – Polgar, Judit – G284 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 b6 5. e3 Bb7 6. Bd3 O-O 7. O-O d5 8. cxd5 exd5 9. a3 Bd6 10. b4 a6
40. Olympiad Open 2012 – Round 6.4 – Laznicka, Viktor – 0-1 – Vallejo Pons, Francisco – G380 1. d4 e6 2. c4 Nf6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 b6 7. O-O Bb7 8. cxd5 exd5 9. a3 Bd6 10. b4 a6
42. Olympiad 2016 – Round 5.5 – Beliavsky, Alexander G – 1/2-1/2 – Navara, David – G371 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 b6 7. O-O Bb7 8. cxd5 exd5 9. a3 Bd6 10. b4 a6
42. Olympiad 2016 – Round 6.10 – Kazhgaleyev, Murtas – 0-1 – Neiksans, Arturs – G391 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 b6 5. e3 Bb7 6. Bd3 O-O 7. O-O d5 8. cxd5 exd5 9. a3 Bd6 10. b4 a6
75. Tata Steel GpA 2013 – Round 2.3 – L'Ami, Erwin – 1/2-1/2 – Karjakin, Sergey – G9 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. Nc3 Bb4 5. e3 O-O 6. Bd3 d5 7. O-O Bb7 8. cxd5 exd5 9. a3 Bd6 10. b4 a6
European Club Cup 2015 – Round 4.2 – Rodshtein, Maxim – 0-1 – Wang, Yue(SH) – G69 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 b6 7. O-O Bb7 8. cxd5 exd5 9. a3 Bd6 10. b4 Nbd7
FIDE WCh KO 2001 – Round 1.2 – Radjabov, Teimour – 1/2-1/2 – Ehlvest, Jaan – G74 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 b6 7. cxd5 exd5 8. O-O Bb7 9. a3 Bd6 10. b4 a6
FIDE World Cup 2015 – Round 5.1 – Mamedyarov, Shakhriyar – 1/2-1/2 – Karjakin, Sergey – G400 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 b6 5. e3 Bb7 6. Bd3 O-O 7. O-O d5 8. cxd5 exd5 9. a3 Bd6 10. b4 a6
FIDE World Rapid 2014 – Round 6.11 – Tomashevsky, Evgeny – 1-0 – Georgiev, Krum – G51 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 b6 7. O-O Bb7 8. cxd5 exd5 9. a3 Bd6 10. b4 Nbd7
Montreal 1979 – Round 5 – Spassky, Boris V. – 1/2-1/2 – Hort, Vlastimil – G21 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 b6 7. O-O Bb7 8. cxd5 exd5 9. a3 Bd6 10. b4 Nbd7
World Blitz 2016 – Round 8.32 – Debashis, Das – 0-1 – Jakovenko, Dmitry – G325 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 b6 7. O-O Bb7 8. cxd5 exd5 9. a3 Bd6 10. b4 a6
World Blitz 2018 – Round 20.34 – Salem, A.R. Saleh – 1-0 – Najer, Evgeniy – G1182 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 b6 7. O-O Bb7 8. cxd5 exd5 9. a3 Bd6 10. b4 Nbd7
World Blitz 2019 – Round 1.49 – Salem, A.R. Saleh – 1/2-1/2 – Rozum, Ivan – G42 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 b6 7. O-O Bb7 8. cxd5 exd5 9. a3 Bd6 10. b4 a6
World Rapid 2016 – Round 1.18 – Debashis, Das – 1/2-1/2 – Wojtaszek, Radoslaw – G10 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 b6 7. O-O Bb7 8. cxd5 exd5 9. a3 Bd6 10. b4 Re8
XXII SuperGM 2005 – Round 1 – Kasimdzhanov, Rustam – 1/2-1/2 – Vallejo Pons, Francisco – G1 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 b6 7. O-O Bb7 8. cxd5 exd5 9. a3 Bd6 10. b4 Nbd7

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