Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● f2→e3, e3→d4	● e6→d5, a7→b6, c7→b6, f7→e6
Passés	—	—
Majorité	—	—

Cases

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

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 1)
Bd3	● Bd3 Actif (mob. 8)
Bb4		● Bb4 Actif (mob. 6)
Bc8		● Bc8 Non développé (mob. 3)
Paire de fous	● Oui	● Oui
Clouages	● knight c3	—
Non développées	3 (● c1, ● a1, ● h1)	3 (● b8, ● c8, ● a8)

Sécurité du roi

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

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	fermé
Ruptures	● c4-c5, ● e3-e4	● …e6-e5

E52a — Nimzo-Indian: Main Line, 6…b6

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

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plans. O-O (Mettre le roi en sécurité, connecter les tours — 82 % des parties) ; cxd5 (Capture en d5, Occuper le centre — 9 % des parties) ; a3 (Préparer expansion aile dame — 8 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plans. ...Bb7 (Fianchetto, fou sur la grande diagonale — 73 % des parties) ; ...Bxc3+ (Fou actif (mobilité 6) — 5 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Partie
1949 Moskou ch-URS – Round 1 – Lilienthal, Andor – 1/2-1/2 – Sokolsky, Alexey – G69 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. e3 O-O 6. Bd3 b6 7. Bd2 Bb7 8. O-O c5 9. a3 Bxc3 10. Bxc3 dxc4
1952 Budapest – Round 7 – Golombek, Harry – 1/2-1/2 – Keres, Paul – G67 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. e3 O-O 6. Bd3 b6 7. cxd5 exd5 8. O-O c5 9. Bd2 Bg4 10. Rc1 Nc6
1954 Belgrade – Round 1 – Rabar, Braslav – 1/2-1/2 – Nievergelt, Erwin – G7 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 b6 7. a3 Bd6 8. e4 dxe4 9. Nxe4 Bb7 10. Qc2 Nbd7
1955 Aberystwyth ch-BCF – Round 4 – Neals, J. – 0-1 – Haygarth, Michael J – G18 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 b6 7. cxd5 exd5 8. a3 Bd6 9. b3 Re8 10. Qc2 a6
1955 Budapest – Round 1 – Negyesy, Gyorgy – 1-0 – Hacsak, Istvan – G31 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 d5 5. Nf3 O-O 6. Bd3 b6 7. a3 Bxc3+ 8. bxc3 Ba6 9. cxd5 Bxd3 10. Qxd3 exd5
1956 Marianske Lazne/Praha – Round 15 – Jezek, Jaroslav – 1/2-1/2 – Filip, Miroslav – G99 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 Re8 9. Qc2 c5 10. dxc5 bxc5
1956 Montevideo – Round ? – Alvarez del Monte, Jose – 0-1 – Eliskases, Erich – G56 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Nf3 b6 6. Bd3 d5 7. a3 Bxc3+ 8. bxc3 Ba6 9. Nd2 c5 10. O-O Nc6
1960 Leningrad ch-URS – Round 4 – Polugaevsky, Lev – 1/2-1/2 – Shamkovich, Leonid – G31 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Nc3 Bb4 5. e3 O-O 6. Bd3 b6 7. Qb3 Be7 8. O-O Nc6 9. cxd5 exd5 10. Ne5 Bb7
1961 Hastings6162 – Round 1 – Barden, Leonard – 1/2-1/2 – Bisguier, Arthur B – G2 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 Re8 9. Ne5 Bb7 10. f4 c5
1964 Buenos Aires – Round 8 – Bolbochan, Julio – 1-0 – Bielicki, Carlos – G70 1. c4 Nf6 2. Nc3 e6 3. d4 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 b6 7. a3 Bxc3+ 8. bxc3 dxc4 9. Bxc4 Bb7 10. O-O Nc6
1966 Palma de Mallorca – Round 2 – Pomar Salamanca, Arturo – 1-0 – Shamkovich, Leonid – G10 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 d5 5. Nf3 O-O 6. Bd3 b6 7. a3 Bxc3+ 8. bxc3 dxc4 9. Bxc4 c5 10. O-O Bb7
1966 Prague (Blitz Match) - Round 1 - Liptay, Laszlo Dr. - 1/2-1/2 - Novak, Ervin - G2 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 b6 5. e3 O-O 6. Bd3 d5 7. cxd5 exd5 8. Ne5 Bd6 9. O-O Ba6 10. f4 Bxd3
1968 Capablanca Memorial – Round 1 – Cobo Arteaga, Eldis – 1/2-1/2 – O'Kelly, Albéric de Galway – G18 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 b6 7. cxd5 exd5 8. Qc2 Bb7 9. O-O Re8 10. Ne5 Bd6
1969 Mar del Plata zt – Round 1 – Aceros Rodriguez, Oscar Leonardo – 0-1 – Bronstein, Luis Marcos – G16 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 b6 7. a3 Be7 8. O-O c5 9. cxd5 exd5 10. Ne5 Bb7
1971 Hoogovens – Round 13 – Mecking, Henrique – 1-0 – Donner, Jan Hein – G73 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 b6 7. a3 Be7 8. cxd5 exd5 9. b4 c5 10. dxc5 bxc5
2005 Sochi (TCh-RUS) - Round 2 - Ivanov, Sergey - 0-1 - Jakovenko, Dmitry - G24 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 b6 7. a3 Be7 8. O-O c5 9. b3 Bb7 10. Bb2 Nbd7
41. Olympiad Open 2014 – Round 9.3 – Ipatov, Alexander – 1/2-1/2 – Johannessen, Leif Erlend – G648 1. d4 e6 2. c4 Nf6 3. Nf3 b6 4. Nc3 Bb4 5. e3 O-O 6. Bd3 d5 7. cxd5 exd5 8. O-O Ba6 9. Bxa6 Nxa6 10. Qa4 Qc8
42. Olympiad 2016 – Round 5.22 – Peralta, Fernando – 0-1 – Iturrizaga Bonelli, Eduardo – G348 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 b6 7. a3 Bxc3+ 8. bxc3 Ba6 9. cxd5 Bxd3 10. Qxd3 Qxd5
75. Tata Steel GpA 2013 – Round 1.5 – Sokolov, Ivan. – 1/2-1/2 – Wang, Hao(ZJWZ) – G4 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 b6 7. a3 Bd6 8. e4 dxe4 9. Nxe4 Nbd7 10. O-O Bb7
Manila Interzonal 1990 – Round 3 – Korchnoi, Viktor – 1/2-1/2 – Huebner, Robert – G47 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 b6 7. a3 Bxc3+ 8. bxc3 dxc4 9. Bxc4 Bb7 10. O-O c5
Qatar Masters Open 2015 – Round 8.6 – Ni, Hua – 1/2-1/2 – Harikrishna, Pentala – G283 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 b6 5. e3 O-O 6. Bd3 d5 7. cxd5 exd5 8. O-O Ba6 9. Bxa6 Nxa6 10. Qd3 Qc8
World Blitz 2015 – Round 17.8 – Mamedyarov, Shakhriyar – 0-1 – Tomashevsky, Evgeny – G1093 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 b6 5. e3 O-O 6. Bd3 d5 7. cxd5 exd5 8. O-O c5 9. dxc5 bxc5 10. Bd2 Nc6
World Blitz 2015 – Round 19.15 – Mamedyarov, Shakhriyar – 1-0 – Harikrishna, Pentala – G1166 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 b6 5. e3 O-O 6. Bd3 d5 7. cxd5 exd5 8. O-O Ba6 9. Bxa6 Nxa6 10. Qd3 Qc8

E52a — Main Line (1949)

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 b6

Les coups candidats

7.O-O — 76.8% (2143 parties) →

Ambassadeurs : Donner, Jan-Hein (14x), Taimanov, Mark (12x), Jussupow, Artur (11x), Knaak, Rainer (11x), Filip, Miroslav (10x), Gligoric, Svetozar (10x), Babula, Vlastimil (10x), Gligoric, Sofija (9x)

7.cxd5 — 15.2% (423 parties)

Ambassadeurs : Niemann, Hans Moke (4x), Donner, Jan-Hein (3x), Bisguier, Arthur B (3x), Zwaig, Arne (3x), Mamedyarov, Shakhriyar (3x), O'Kelly, Albéric de Galway (2x), Cherepkov, Alexander V (2x), Barden, Leonard (2x)

7.a3 — 7.1% (198 parties)

Ambassadeurs : Flear, Glenn C (6x), Knaak, Rainer (5x), Ibragimov, Ildar (5x), Sokolov, Andrei (3x), Chandler, Murray G (2x), Granda Zuniga, Julio E (2x), Korchnoi, Viktor (2x), Cuellar, Ulises (2x)

7.Bd2 — 0.5% (14 parties)

Ambassadeurs : Garcia Palermo, Carlos Horacio (2x), Sokolov, Andrei (1x), Sokolov, Ivan (1x), Perleberg, Olaf (1x), Johnson, Chris (1x), Varga, Zoltan (1x), Kummer, Helmut (1x), Jehle, Edgar (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	7.O-O	7.cxd5	7.a3	7.Bd2
<1800	125	78%	13%	8%	1%
1800-2200	770	78%	15%	5%	1%
2200-2600	1378	75%	16%	8%	0%
2600+	159	74%	17%	9%	—

Évolution par décennie (% des parties)

Décennie	N parties	7.O-O	7.cxd5	7.a3	7.Bd2
1950s	80	89%	8%	4%	—
1960s	75	73%	20%	5%	—
1970s	92	93%	3%	3%	—
1980s	150	79%	7%	11%	1%
1990s	296	81%	9%	8%	1%
2000s	360	80%	12%	6%	1%
2010s	1274	75%	16%	8%	0%
2020s	465	69%	25%	5%	1%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
7.O-O	75%	69%	▼ -5.9%
7.cxd5	16%	25%	▲ +8.9%
7.a3	8%	5%	▼ -3.1%
7.Bd2	0%	1%	+0.4%

Joueurs célèbres

Champions du monde dans cette position

Tal, Mikhail — 10 parties
Carlsen, Magnus — 2 parties
Ju, Wenjun — 2 parties
Smyslov, Vladimir — 1 partie
Karpov, Anatoly — 1 partie
Kramnik, Vladimir — 1 partie
Hou, Yifan — 1 partie

Parties historiques

7.O-O — 76.8% (2143 parties)

1950 — Niephaus, Walter vs Sahlmann, Walter — 1/2-1/2 — Bad Pyrmont GER
1951 — Taimanov, Mark vs Averbakh, Yuri L — 1-0 — Moskou ch-URS
1952 — Geller, Efim P. vs Keres, Paul — 1-0 — Moscow RUS
1952 — Geller, Efim P. vs Keres, Paul — 1-0 — Moskou ch-URS
1952 — Szabo, Laszlo vs Gereben, Erno — 1-0 — Budapest HUN

7.cxd5 — 15.2% (423 parties)

1952 — Golombek, Harry vs Keres, Paul — 1/2-1/2 — Budapest HUN
1955 — Neals, J. vs Haygarth, Michael J — 0-1 — Aberystwyth ch-BCF
1956 — Collet, Hugo vs Szapcenkopf, Jacques — 1-0 — Paris FRA
1956 — Jezek, Jaroslav vs Filip, Miroslav — 1/2-1/2 — Marianske Lazne
1956 — Moore, Brian J vs Barden, Leonard — 1/2-1/2 — Blackpool ENG

7.a3 — 7.1% (198 parties)

1954 — Rabar, Braslav vs Nievergelt, Erwin — 1/2-1/2 — Belgrade SRB
1955 — Negyesy, Gyorgy vs Hacsak, Istvan — 1-0 — Budapest HUN
1956 — Alvarez, Jose-Luis vs Eliskases, Erich — 0-1 — ?
1961 — Beach, Richard A vs Scholes, James Edward — 1-0 — Aberystwyth
1964 — Bolbochan, Julio vs Bielicki, Carlos — 1-0 — Buenos Aires ARG

7.Bd2 — 0.5% (14 parties)

1985 — Garcia Palermo, Carlos Horacio vs Sokolov, Andrei — 1/2-1/2 — Lucerne SUI
1985 — Garcia Palermo, Carlos Horacio vs Sokolov, Ivan — 1/2-1/2 — Lucerne SUI
1996 — Perleberg, Olaf vs Johnson, Chris — 1-0 — corr IECG Cup II prel
1999 — Varga, Zoltan vs Kummer, Helmut — 1-0 — Austria
2003 — Le Minh, Hoang vs Fournier Le Barzic, Diane — 1-0 — Hue

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