E51c — Nimzo-Indian: 4.e3 O-O 5.Nf3 d5 6.Be2

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Be2 * ● Trait aux Noirs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

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Plans. O-O (Mettre le roi en sécurité, connecter les tours — 75 % des parties) ; a3 (Préparer expansion aile dame — 5 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

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Plans. ...c5 (Frapper le centre adverse — 56 % des parties) ; ...b6 (Préparer le fianchetto — 22 % des parties) ; ...dxc4 (Capture en c4, Frapper le centre adverse — 14 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Structure de pions

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

Cases

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

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 1)
Be2	● Be2 Ok (mob. 2)
Bb4		● Bb4 Actif (mob. 6)
Bc8		● Bc8 Non développé (mob. 1)
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	● e3-e4	● …e6-e5

Partie
1939 Amsterdam m ch-NED – Round 3 – Landau, Salo – 1/2-1/2 – Euwe, Max – G3 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Nf3 d5 6. Be2 b6 7. cxd5 Nxd5 8. Qc2 c5 9. O-O cxd4 10. Nxd5 Qxd5
1954 Amsterdam olm – Round 1 – Trifunovic, Petar – 1/2-1/2 – Barcza, Gedeon – G155 1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. Nc3 Bb4 5. e3 O-O 6. Be2 c5 7. O-O Nbd7 8. cxd5 exd5 9. Qb3 Nb6 10. dxc5 Bxc5
1957 Mar del Plata – Round 7 – Panno, Oscar – 1-0 – Alonso-Lej De Las Casas, Fernando – G66 1. c4 Nf6 2. Nc3 e6 3. Nf3 d5 4. d4 Bb4 5. e3 O-O 6. Be2 c5 7. O-O b6 8. dxc5 bxc5 9. Na4 Qe7 10. cxd5 exd5
1960 Hamburg WGER-USSR – Round 4 – Lehmann, Heinz – 1/2-1/2 – Antoshin, Vladimir S – G9 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Nf3 d5 6. Be2 dxc4 7. Bxc4 Nc6 8. O-O a6 9. Qc2 Bd6 10. Rd1 Qe8
1961 Baden-Vienna – Round 1 – Averbakh, Yuri L – 1/2-1/2 – Stockl, Cameron – G4 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 d5 5. Nf3 O-O 6. Be2 c5 7. O-O b6 8. dxc5 bxc5 9. Na4 Nbd7 10. a3 Ba5
1964 Budapest ch-HUN – Round 1 – Kluger, Gyula – 1-0 – Haag, Ervin – G51 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Nf3 d5 6. Be2 b6 7. O-O Bb7 8. a3 Bxc3 9. bxc3 Nc6 10. a4 Ne4
1965 Budapest – Round 1 – Liptay, Laszlo Dr. – 1/2-1/2 – Hora, Vratislav – G19 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Nf3 d5 6. Be2 Nc6 7. O-O dxc4 8. Bxc4 Bd6 9. Nb5 Be7 10. Nc3 Bd6
1965 DDR Ch 15th – Round 6 – Moehring, Guenther – 0-1 – Brameyer, Hermann – G22 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Nf3 Bb4 5. e3 O-O 6. Be2 c5 7. O-O b6 8. a3 Bxc3 9. bxc3 Ba6 10. cxd5 Qxd5
1968 Solingen GER – Round 3 – Lehmann, Heinz – 1/2-1/2 – Damjanovic, Mato – G8 1. c4 Nf6 2. Nc3 e6 3. Nf3 d5 4. d4 Bb4 5. e3 O-O 6. Be2 c5 7. a3 Ba5 8. O-O dxc4 9. Bxc4 cxd4 10. exd4 Bxc3
30. ECC Open 2014 – Round 7.7 – Zhigalko, Andrey – 0-1 – Van Kampen, Robin – G162 1. c4 e6 2. Nc3 Nf6 3. d4 Bb4 4. Nf3 d5 5. e3 O-O 6. Be2 b6 7. O-O Bb7 8. Bd2 dxc4 9. Bxc4 Nbd7 10. Qe2 Qe7
FIDE-Wch k.o. 1997 – Round 2.4 – Aleksandrov, Aleksej – 1-0 – Hjartarson, Johann – G100 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Nf3 d5 6. Be2 b6 7. O-O Bb7 8. a3 Bd6 9. b4 dxc4 10. Bxc4 a5

E51c — Nimzo-Indian (1939)

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Be2

Les coups candidats

6…c5 — 56.1% (180 parties)

Ambassadeurs : Vaisser, Anatoli (8x), Kolanek, Roman (5x), Marciano, David (4x), Anay Barche (2x), Pollak, Georg (2x), O'Kelly, Albéric de Galway (2x), Lengyel, Levente (2x), Lehmann, Heinz (2x)

6…b6 — 22.1% (71 parties)

Ambassadeurs : Djuric, Stefan (2x), Schouten, Nico (2x), Povah, Nigel E (2x), Del Rio De Angelis, Salvador Gabriel (2x), Kluger, Gyula (1x), Haag, Ervin (1x), Buslaev, Aleksander (1x), Kholmov, Ratmir D (1x)

6…dxc4 — 14.3% (46 parties)

Ambassadeurs : Balashov, Yuri (2x), Panno, Oscar (1x), Petrosian, Tigran V. (1x), Jansson, Borje (1x), Johansson, Martin 1979 (1x), Lehmann, Heinz (1x), Abanin, Vladimir (1x), Varabiescu, Gheorghe (1x)

6…c6 — 1.9% (6 parties)

Ambassadeurs : Psakhis, Lev (2x), Fernandez Gonzalez, Juan Alfonso (2x), Graf, Alexander (1x), Ruderfer, Mark B (1x), Holloway, Nigel J (1x), Law, Andrew P (1x), Campos Hernandez, Antonio (1x), Rodriguez Leiva, Manuel (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	6…c5	6…b6	6…dxc4	6…c6
<1800	17	47%	6%	29%	6%
1800-2200	106	57%	20%	17%	1%
2200-2600	132	58%	23%	12%	3%
2600+	11	—	73%	27%	—

Évolution par décennie (% des parties)

Décennie	N parties	6…c5	6…b6	6…dxc4	6…c6
1950s	6	67%	17%	17%	—
1960s	26	62%	12%	23%	—
1970s	6	33%	17%	17%	17%
1980s	18	50%	17%	11%	17%
1990s	40	42%	32%	8%	—
2000s	48	73%	17%	4%	2%
2010s	128	62%	22%	11%	1%
2020s	49	37%	29%	35%	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
6…c5	62%	37%	▼ -25.0%
6…b6	22%	29%	▲ +6.7%
6…dxc4	11%	35%	▲ +23.8%
6…c6	1%	0%	▼ -0.8%

Joueurs célèbres

Champions du monde dans cette position

Botvinnik, Mikhail — 1 partie

Parties historiques

6…c5 — 56.1% (180 parties)

1954 — Trifunovic, Petar vs Anay Barche — 1/2-1/2 — Amsterdam olm
1957 — Anay Barche vs Sliwa, Bogdan — 0-1 — Sofia zt Sofia BUL
1957 — Panno, Oscar vs Casas Perea, Fernando — 1-0 — Mar del Plata ARG
1958 — Pogrebissky, Iosif vs Zamkovskaya, Violetta Aleks — 1-0 — Kiev UKR
1960 — Lehmann, Heinz vs Filip, Miroslav — 1/2-1/2 — Marianske Lazne

6…b6 — 22.1% (71 parties)

1959 — Nikolaevsky, Yuri V vs Averbakh, Yuri L — 1/2-1/2 — Erevan ARM
1961 — Botvinnik, Mikhail vs Furman, Semyon — 1-0 — Moscow RUS
1963 — Buslaev, Aleksander vs Kholmov, Ratmir D — 0-1 — Moscow RUS
1964 — Kluger, Gyula vs Haag, Ervin — 1-0 — Budapest ch-HUN
1971 — Minev, Nikolay N vs Kerchev, Zlatozar — 1-0 — Sofia BUL

6…dxc4 — 14.3% (46 parties)

1955 — Panno, Oscar vs Petrosian, Tigran V. — 1/2-1/2 — Goteborg izt
1960 — Lehmann, Heinz vs Abanin, Vladimir — 1/2-1/2 — Hamburg WGER-USSR
1961 — Giterman, Shlomo vs Seoev, Robert — 1-0 — URS-ch29 sf Novgorod
1964 — Weaver, Norris vs Blackstone, John — 0-1 — San Francisco, Ca
1965 — Bagirov, Yusif vs EDEN GLORY — 1/2-1/2 — Beverwijk NED

6…c6 — 1.9% (6 parties)

1974 — Holloway, Nigel J vs Law, Andrew P — 1/2-1/2 — Clacton ch-BCF
1983 — Psakhis, Lev vs Fernandez Gonzalez, Juan Alfonso — 1-0 — ?
1983 — Psakhis, Lev vs Fernandez Gonzalez, Juan Alfonso — 1-0 — Cienfuegos City CUB
1989 — Graf, Alexander vs Ruderfer, Mark B — 1-0 — Tashkent UZB
2004 — Campos Hernandez, Antonio vs Rodriguez Leiva, Manuel — 1-0 — ESP