E52f — Nimzo-Indian: Main Line, 6…b6 7.O-O Bb7 8.a3 Bd6

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 b6 7.O-O Bb7 8.a3 Bd6 * ○ Trait aux Blancs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Atouts. Les Blancs s'appuient sur les cases fortes b5 et e5, un fou actif en d3 et la paire de fous.

En contrepartie. Plusieurs pièces dorment encore (le fou c1 et la tour a1).

Plans. Bd2 (Développer Bc1) ; h3 (Empêcher ...Bg4).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Atouts. Les Noirs s'appuient sur un avant-poste en e4, un fou actif en d6 et la paire de fous.

Côté adverse. Le fou enfermé en c1.

En contrepartie. Plusieurs pièces dorment encore (le cavalier b8 et la tour a8).

Plans. ...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	● b2→a3, f2→e3, e3→d4	● e6→d5, a7→b6, c7→b6, f7→e6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● b5 (2v0), ● e5 (2v1)	—
Cases faibles	● e4	—
Centre	● d4 (2v0), ● e5 (2v1)	● d5 (3v2)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 1)
Bd3	● Bd3 Actif (mob. 7)
Bd6		● Bd6 Actif (mob. 8)
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	● c4-c5, ● e3-e4	● …e6-e5

Partie
1961 Baku ch-URS – Round 1 – Averbakh, Yuri L – 1/2-1/2 – Taimanov, Mark E – G6 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. e3 Bb7 5. Nc3 Bb4 6. Bd3 O-O 7. O-O d5 8. a3 Bd6 9. b4 dxc4 10. Bxc4 Nbd7
1961 Debrecen – Round 7 – Banfalvi, Sander – 1-0 – Fazekas, Stephan – G44 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Bd3 Bb7 6. Nf3 O-O 7. O-O d5 8. a3 Bd6 9. cxd5 exd5 10. Qc2 c5
1961 Oberhausen etc – Round 10 – Perez Perez, Francisco Jose – 1/2-1/2 – Pachman, Ludek – G241 1. d4 Nf6 2. c4 e6 3. e3 d5 4. Nc3 Bb4 5. Bd3 O-O 6. Nf3 b6 7. O-O Bb7 8. a3 Bd6 9. b4 dxc4 10. Bxc4 Nbd7
1962 Erevan ch-URS – Round 1 – Mikenas, Vladas – 0-1 – Bannik, Anatolij – G35 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Bd3 Bb7 6. Nf3 O-O 7. O-O d5 8. a3 Bd6 9. Nb5 dxc4 10. Bxc4 Be7
1962 Olympiad Varna BUL – Round 6 – Simon Cobo, Enrique – 1/2-1/2 – Bolbochan, J. – G35 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Nf3 b6 6. Bd3 Bb7 7. O-O d5 8. a3 Bd6 9. Qe2 Ne4 10. Nb5 dxc4
1962 Stockholm Interzonal – Round 14 – Olafsson, Fridrik – 1/2-1/2 – Bisguier, Arthur B – G123 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Nf3 b6 6. Bd3 Bb7 7. O-O d5 8. a3 Bd6 9. b4 dxc4 10. Bxc4 a5
1962 Stockholm Interzonal – Round 17 – Portisch, Lajos – 1/2-1/2 – Bolbochan, J. – G148 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Nf3 b6 6. Bd3 d5 7. O-O Bb7 8. a3 Bd6 9. b4 dxc4 10. Bxc4 Nbd7
1963 URS Team Ch – Round 1 – Taimanov, Mark E – 1-0 – Buslaev, Aleksander – G7 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 b6 7. O-O Bb7 8. a3 Bd6 9. b4 dxc4 10. Bxc4 Nbd7
1969 New York ch-USA – Round 7 – Addison, Wiliam G – 1/2-1/2 – Reshevsky, Samuel – G35 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 b6 7. O-O Bb7 8. a3 Bd6 9. Qe2 Ne4 10. Nd2 f5
1970 IBM – Round 7 – Donner, Jan Hein – 1-0 – Ree, Hans – G54 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 b6 7. O-O Bb7 8. a3 Bd6 9. b4 dxc4 10. Bxc4 Nbd7
1971 Hoogovens – Round 3 – Gligoric, Sofija – 1-0 – Van den Berg, Cees – G76 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 b6 7. O-O Bb7 8. a3 Bd6 9. b4 dxc4 10. Bxc4 Nbd7
1972 Skopje ol (Men) fin-A – Round 9 – Ungureanu, Emil – 1/2-1/2 – Bisguier, Arthur B – G153 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Bd3 Bb7 6. Nf3 O-O 7. O-O d5 8. a3 Bd6 9. b4 dxc4 10. Bxc4 a5
42. Olympiad 2016 – Round 4.28 – Abdikafi Arab Ahmed – 1/2-1/2 – Salem, A.R. Saleh – G283 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Nf3 d5 6. Bd3 b6 7. O-O Bb7 8. a3 Bd6 9. b3 dxc4 10. Bxc4 Nbd7
43. Olympiad 2018 – Round 3.16 – Papaioannou, Ioannis CS – 1/2-1/2 – Bogner, Sebastian – G177 1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. e3 Bb7 5. Bd3 d5 6. O-O Bd6 7. Nc3 O-O 8. a3 Nbd7 9. cxd5 exd5 10. Nb5 Be7
Amber Blindfold 2002 – Round 6 – Gelfand, Boris – 1-0 – Ljubojevic, Ljubomir – G7 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 d5 5. Bd3 O-O 6. Nf3 b6 7. O-O Bb7 8. a3 Bd6 9. cxd5 exd5 10. b4 a6
Amber Rapidplay 1999 – Round 4 – Ivanchuk, Vasyl – 1-0 – Piket, Jeroen – G22 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. Nc3 Bb7 5. e3 Bb4 6. Bd3 O-O 7. O-O d5 8. a3 Bd6 9. cxd5 exd5 10. b4 Nbd7
Amber-rapid 20th 2011 – Round 7 – Topalov, Veselin – 1/2-1/2 – Giri, Anish – G20 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 b6 7. O-O Bb7 8. a3 Bd6 9. Qe2 c5 10. Rd1 Nbd7
Bugojno 1982 – Round 1 – Gligoric, Svetozar – 1/2-1/2 – Petrosian, Tigran V – G23 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 d5 5. Bd3 O-O 6. Nf3 b6 7. O-O Bb7 8. a3 Bd6 9. cxd5 exd5 10. b4 a6
Erevan ch-URS 1975 – Round 1 – Gulko, Boris – 1/2-1/2 – Tal, Mikhail – G20 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Nf3 b6 6. Bd3 Bb7 7. O-O d5 8. a3 Bd6 9. b4 dxc4 10. Bxc4 Nbd7
EU Team Ch (Men) 17th 2009 – Round 8 – Sargissian, Gabriel – 1/2-1/2 – Jakovenko, Dmitry – 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. a3 Bd6 9. b4 dxc4 10. Bxc4 a5
Interpolis 1982 – Round 10 – Petrosian, Tigran V. – 1-0 – Browne, Walter Shawn – G47 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. Nc3 Bb4 5. e3 O-O 6. Bd3 Bb7 7. O-O d5 8. a3 Bd6 9. cxd5 exd5 10. b4 a6
Linares 1985 – Round 1 – Polugaevsky, Lev – 1-0 – Christiansen, Larry – G15 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. Nc3 Bb4 5. e3 Bb7 6. Bd3 O-O 7. O-O d5 8. a3 Bd6 9. cxd5 exd5 10. b4 a6
Lone Pine Open 1978 – Round 7 – Portisch, Lajos – 0-1 – Petrosian, Tigran V. – G26 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Bd3 Bb7 6. Nf3 O-O 7. O-O d5 8. a3 Bd6 9. b4 dxc4 10. Bxc4 Nbd7
Manila Interzonal 1990 – Round 2 – De La Torre Rodriguez, Elizabeth – 0-1 – Korchnoi, Viktor – G31 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Bd3 Bb7 6. Nf3 O-O 7. O-O d5 8. a3 Bd6 9. b4 dxc4 10. Bxc4 Nbd7
Moscow 1975 – Round 1 – Spassky, Boris V. – 1/2-1/2 – Tal, Mikhail – G22 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 b6 7. O-O Bb7 8. a3 Bd6 9. b4 dxc4 10. Bxc4 Nbd7
SuperUnited Blitz 2023 – Round 5.3 – Lupulescu, Constantin – 0-1 – Caruana, Fabiano – G23 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 b6 7. O-O Bb7 8. a3 Bd6 9. b4 dxc4 10. Bxc4 Nbd7
SuperUnited Rapid 2023 – Round 7.4 – Lupulescu, Constantin – 1/2-1/2 – Firouzja, Alireza – 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. a3 Bd6 9. b4 dxc4 10. Bxc4 Nbd7
Tal Memorial Blitz 2008 – Round 12 – Kramnik, Vladimir – 1-0 – Morozevich, Alexander – G106 1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. Nc3 Bb4 5. e3 O-O 6. Bd3 b6 7. O-O Bb7 8. a3 Bd6 9. cxd5 exd5 10. b4 a6

E52f — 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.a3 Bd6

Eval: [+0.15]

Les coups candidats

9.cxd5 — 39.5% (197 parties)

Ambassadeurs : Gligoric, Svetozar (8x), Ftacnik, Lubomir (5x), Petrosian, Tigran V. (3x), Mokry, Karel (3x), Chuchelov, Vladimir (3x), Campani, Paolo (3x), Ligterink, Gert (2x), Browne, Walter Shawn (2x)

9.b4 — 37.9% (189 parties)

Ambassadeurs : Portisch, Lajos (6x), Donner, Jan-Hein (5x), Bisguier, Arthur B (4x), Neverov, Valeriy (4x), Tal, Mikhail (3x), Khalifman, Alexander (3x), Kolanek, Roman (3x), Gligoric, Svetozar (2x)

9.b3 — 9.6% (48 parties)

Ambassadeurs : Shcherbakov, Ruslan (3x), Speelman, Jon S (3x), ? (2x), Shariyazdanov, Andrey (2x), Lukacs, Peter (2x), Rantanen, Yrjo A. (2x), McCormick, James (1x), Demauro, J (1x)

9.Qe2 — 6.6% (33 parties)

Ambassadeurs : Reshevsky, Samuel (2x), Mecking, Henrique (2x), Polugaevsky, Lev (2x), Schreiner, Till (2x), Simon Cobo, Enrique (1x), Bolbochan, J. (1x), Addison, Wiliam G (1x), Dolgitser, Konstantin (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	9.cxd5	9.b4	9.b3	9.Qe2
<1800	5	60%	20%	—	—
1800-2200	120	44%	36%	6%	8%
2200-2600	273	39%	36%	12%	6%
2600+	38	26%	53%	8%	11%

Évolution par décennie (% des parties)

Décennie	N parties	9.cxd5	9.b4	9.b3	9.Qe2
1950s	2	—	50%	—	—
1960s	11	9%	64%	—	18%
1970s	22	14%	68%	—	14%
1980s	44	57%	34%	2%	2%
1990s	95	29%	37%	19%	8%
2000s	78	51%	22%	9%	4%
2010s	212	41%	39%	9%	7%
2020s	35	40%	46%	6%	3%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
9.cxd5	41%	40%	▼ -0.6%
9.b4	39%	46%	▲ +6.6%
9.b3	9%	6%	▼ -3.7%
9.Qe2	7%	3%	▼ -4.2%

Joueurs célèbres

Champions du monde dans cette position

Tal, Mikhail — 3 parties
Kramnik, Vladimir — 1 partie
Ju, Wenjun — 1 partie

Parties historiques

9.cxd5 — 39.5% (197 parties)

1961 — Banfalvi, Sander vs Fazekas, Stephan — 1-0 — Debrecen HUN
1975 — Tarjan, James vs Silman, Jeremy — 1/2-1/2 — Berkeley
1978 — Lind, Anders vs Andeer, Stefan — 0-1 — ?
1979 — Knaak, Rainer vs Beliavsky, Alexander G — 1-0 — Novi Sad SRB
1980 — Gligoric, Svetozar vs Stean, Michael F — 1/2-1/2 — Baden-Baden GER

9.b4 — 37.9% (189 parties)

1958 — Zhukhovitsky, Samuel vs Sokolsky, Alexey — 1-0 — Baku AZE
1961 — Perez Perez, Francisco Jose vs Pachman, Ludek — 1/2-1/2 — Oberhausen etc
1961 — Averbakh, Yuri L vs Taimanov, Mark — 1/2-1/2 — Baku ch-URS
1962 — Olafsson, Fridrik vs Bisguier, Arthur B — 1/2-1/2 — Stockholm SWE
1962 — Portisch, Lajos vs Bolbochan, J. — 1/2-1/2 — Stockholm SWE

9.b3 — 9.6% (48 parties)

1980 — McCormick, James vs Demauro, J — 0-1 — Seattle, WA USA
1990 — Mega R vs ? — 0-1 — 5+11
1991 — Eriksson, Johan vs Hellsten, Johan — 0-1 — Helsingborg
1991 — Speelman, Jon S vs Chandler, Murray G — 1-0 — Hastings ENG
1992 — Strautins, Uldis vs Livie, Douglas M. — 1-0 — corr ICCF

9.Qe2 — 6.6% (33 parties)

1962 — Simon Cobo, Enrique vs Bolbochan, J. — 1/2-1/2 — Olympiad Varna BUL
1969 — Addison, Wiliam G vs Reshevsky, Samuel — 1/2-1/2 — New York, NY USA
1977 — Mecking, Henrique vs Polugaevsky, Lev — 0-1 — Luzern 2
1977 — Mecking, Henrique vs Polugaevsky, Lev — 0-1 — Lucerne SUI
1979 — Gofshtein, Leonid vs Salov, Sergej — 0-1 — Beltsy

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