E33b — Nimzo-Indian: Classical, 4…Nc6 5.Nf3

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 Nc6 5.Nf3 * ● Trait aux Noirs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plan principal. Attaque sur le roi adverse resté au centre.

Atouts. Les Blancs s'appuient sur les cases fortes e4, b5, e5 et g5 et la paire de fous.

Côté adverse. Le fou enfermé en c8 et le roi resté au centre.

En contrepartie. Le roi n'est pas encore à l'abri et plusieurs pièces dorment encore (les fous c1 et f1 et les tours a1 et h1).

Plans. e4 (Centre d4+e4, menace e5, libère Bf1) ; Bg5 (Clouer Nf6) ; h3 (Empêcher ...Bg4).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plan principal. Attaque sur le roi adverse resté au centre.

Atouts. Les Noirs s'appuient sur un fou actif en b4 et la paire de fous.

Côté adverse. Les fous enfermés en c1 et f1 et le roi resté au centre.

En contrepartie. Le roi n'est pas encore à l'abri et plusieurs pièces dorment encore (le fou c8 et les tours a8 et h8).

Plans. O-O (Mettre le roi en sécurité, connecter les tours) ; ...d6 (Libérer Bc8) ; ...d5 (Rupture) ; ...e5 (Rupture).

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	—	● d7→e6, f7→e6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● e4 (2v1), ● b5 (2v0), ● e5 (2v1), ● g5 (2v0)	—
Cases faibles	—	—
Centre	● e4 (2v1), ● e5 (2v1)	—

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bf1	● Bf1 Non développé (mob. 0)
Bb4		● Bb4 Actif (mob. 7)
Bc8		● Bc8 Non développé (mob. 0)
Paire de fous	● Oui	● Oui
Clouages	● knight c3	—
Non développées	4 (● c1, ● f1, ● a1, ● h1)	3 (● c8, ● a8, ● h8)

Sécurité du roi

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

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	semi-ouvert
Ruptures	● c4-c5, ● d4-d5, ● e2-e3	● …d7-d6, ● …d7-d5, ● …e6-e5

Partie
1932 Bern – Round 13 – Staehelin, Adolf – 1/2-1/2 – Johner, Hans – G94 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 O-O 6. a3 Bxc3+ 7. Qxc3 Ne4 8. Qc2 f5 9. e3 d5 10. Bd3 Rb8
1934 Leningrad ch-URS – Round 1 – Belavenets, Sergey – 1-0 – Ragozin, Viacheslav – G66 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 O-O 6. e4 Bxc3+ 7. bxc3 d6 8. e5 dxe5 9. dxe5 Nd7 10. Ba3 Ne7
1935 Lodz IT – Round 4 – Winter, William – 1-0 – Tartakower, Savielly – G5 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 O-O 6. a3 Bxc3+ 7. Qxc3 d6 8. b4 Ne4 9. Qc2 f5 10. b5 Ne7
1936 Bad Nauheim – Round 5 – Van den Bosch, Johannes – 0-1 – Stahlberg, Gideon – G22 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 O-O 6. Bd2 Re8 7. a3 Bf8 8. e3 d6 9. Bd3 e5 10. d5 Ne7
1936 Moscow – Round 1 – Botvinnik, Mikhail – 1-0 – Kan, Ilya A – G12 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 O-O 6. Bg5 Re8 7. e3 d6 8. Be2 e5 9. O-O Bxc3 10. bxc3 h6
1936 Moskou – Round 1 – Ragozin, Viacheslav – 1/2-1/2 – Riumin, Nikolai – G13 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 O-O 6. e4 d6 7. e5 dxe5 8. dxe5 Ng4 9. Bf4 Nd4 10. Qd2 f6
1936 Muenchen ol – Round 1 – Gibaud, Amedee – 0-1 – Frydman, Paulino – G4 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 O-O 6. e3 Re8 7. a3 Bf8 8. b4 e5 9. dxe5 Ng4 10. Bd3 h6
1937 Tbilisi ch-URS – Round 1 – Levenfish, Grigory – 1/2-1/2 – Konstantinopolsky, Alexander – G54 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 Qe7 6. a3 Bxc3+ 7. Qxc3 d6 8. b4 e5 9. dxe5 Nxe5 10. Nxe5 dxe5
1938 Leningrad – Round 1 – Kotov Lundqvist, Alex – 1/2-1/2 – Chekhover, Vitaly – G8 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 O-O 6. Bg5 Re8 7. a3 Bxc3+ 8. bxc3 d6 9. e3 e5 10. Be2 Qe7
1938 Montevideo – Round 7 – Balparda, Julio – 0-1 – Fenoglio, Virgilio – G47 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 O-O 6. e3 d5 7. a3 Bxc3+ 8. Qxc3 Ne4 9. Qc2 Bd7 10. b4 f5
1938 Trade Unions – Round 12 – Vasiliev, Viktor A – 1/2-1/2 – Chekhover, Vitaly – G93 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 O-O 6. Bg5 Qe7 7. e3 Re8 8. Be2 Bxc3+ 9. Qxc3 Ne4 10. Bxe7 Nxc3
1938 Trade Unions – Round 17 – Kotov, Alexander. – 1/2-1/2 – Chekhover, Vitaly – G136 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 O-O 6. Bg5 Re8 7. a3 Bxc3+ 8. bxc3 d6 9. e3 e5 10. Be2 Qe7
1938 URS Ch, semi final – Round 1 – Kotov, Alexander A – 1/2-1/2 – Kaiev, Lev Alexeevich – G21 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 O-O 6. Bg5 h6 7. Bh4 d6 8. e3 Re8 9. a3 Bxc3+ 10. bxc3 e5
1939 Buenos Aires ol prel-B – Round 4 – Olivera, Alfredo – 1-0 – Reinhardt, Heinrich – G14 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 O-O 6. e4 Bxc3+ 7. bxc3 d6 8. e5 dxe5 9. dxe5 Nd7 10. Bf4 h6
1939 Buenos Aires ol prel-C – Round 3 – Bolbochan, J. – 1-0 – Poulsen, Christian – G10 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 O-O 6. e3 Qe7 7. a3 Bxc3+ 8. Qxc3 d6 9. Be2 Ne4 10. Qc2 f5
1939 Leningrad/Moscow – Round 14 – Makogonov, Vladimir – 1/2-1/2 – Romanovsky, Pjotr – G11 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 O-O 6. a3 Bxc3+ 7. Qxc3 a5 8. b3 Re8 9. Bb2 d5 10. g3 Bd7
1939 Leningrad/Moscow – Round 8 – Keres, Paul Petrovich – 1/2-1/2 – Romanovsky, Pjotr – G59 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 O-O 6. a3 Bxc3+ 7. Qxc3 a5 8. b3 d6 9. Bb2 Re8 10. Nd2 d5
1940 Moskou ch-URS – Round 15 – Veresov, Gavriil – 1-0 – Levenfish, Grigory – G145 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 O-O 6. Bg5 h6 7. Bh4 g5 8. Bg3 g4 9. Nh4 Nh5 10. d5 Nb8
1940 URS-sf – Round 1 – Goldberg, Grigory A – 0-1 – Dubinin, Peter – G18 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 Qe7 6. a3 Bxc3+ 7. Qxc3 a5 8. g3 d6 9. Bg2 e5 10. O-O O-O
1941 Mar del Plata – Round 3 – Winz, Victor – 0-1 – Bolbochan, J. – G34 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 Qe7 6. a3 Bxc3+ 7. Qxc3 d6 8. b4 O-O 9. Bb2 Ne4 10. Qc2 f5
1945 Novi Sad – Round 1 – Gligorić, Svetozar – 0-1 – Kulzinski, Nikolaj – G13 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 Qe7 6. Bg5 h6 7. Bxf6 Qxf6 8. a3 Bxc3+ 9. Qxc3 d6 10. e3 O-O
1946 New York ch-USA – Round 1 – Kowalski, Stefan – 0-1 – Pinkus, Albert – G13 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 O-O 6. Bd2 d5 7. e3 Re8 8. a3 Bf8 9. Bd3 g6 10. O-O Bg7
1946 POL Ch – Round 4 – Gadalinski, Jan – 1-0 – Gawlikowski, Stanislaw – G20 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 O-O 6. Bd2 d5 7. e3 Qe7 8. cxd5 exd5 9. Bd3 Bg4 10. O-O Bxf3
1947 Helsinki – Round 1 – Book, Eero – 1-0 – Vestol, A. – G9 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 Qe7 6. Bd2 e5 7. dxe5 Nxe5 8. a3 Bxc3 9. Bxc3 d6 10. e3 O-O
1948 New York – Round 9 – Denker, Arnold S – 1/2-1/2 – Steiner, Heinrich Jun. – G46 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 O-O 6. a3 Bxc3+ 7. Qxc3 d6 8. g3 Ne4 9. Qc2 f5 10. Bg2 e5
1948 South Fallsburg ch-USA – Round 1 – Poschel, Paul – 1/2-1/2 – Almgren, Sven – G10 1. c4 Nf6 2. Nc3 e6 3. d4 Bb4 4. Qc2 Nc6 5. Nf3 O-O 6. a3 Bxc3+ 7. Qxc3 Ne4 8. Qc2 f5 9. b4 a6 10. g3 b5
1949 Moskou ch-URS – Round 1 – Flohr, Salo – 1/2-1/2 – Ragozin, Viacheslav – G61 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 O-O 6. Bd2 d5 7. e3 Bd7 8. Be2 dxc4 9. Bxc4 a6 10. O-O Bd6
1949 YUG-SUI m – Round 2 – Vidmar, Milan Jr – 1-0 – Staehelin, Adolf – G8 1. c4 Nf6 2. Nc3 e6 3. d4 Bb4 4. Qc2 Nc6 5. Nf3 O-O 6. a3 Bxc3+ 7. Qxc3 a5 8. b3 d6 9. Bb2 Re8 10. e3 e5
1950 Dubrovnik olm – Round 12 – Van Scheltinga, Theo – 1-0 – Panagopoulos, Takis – G174 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 O-O 6. a3 Bxc3+ 7. Qxc3 a5 8. b3 Re8 9. Bb2 d5 10. e3 Ne4
1960 Leningrad tt – Round 9 – Hollis, Adrian – 1-0 – Szabo, Iuliu inactive – G113 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 O-O 6. Bg5 d6 7. e3 e5 8. d5 Nb8 9. Nd2 Na6 10. Bd3 h6
1964 WchT U26 11. fin-B – Round 1.1 – Hollis, Adrian – 1/2-1/2 – Jongsma, Alexander – G2 1. d4 Nf6 2. c4 Nc6 3. Nf3 e6 4. Nc3 Bb4 5. Qc2 Qe7 6. a3 Bxc3+ 7. Qxc3 a5 8. b3 d6 9. Bb2 O-O 10. g3 Re8
1965 Pardubice – Round 5 – Petras, Jan – 1-0 – Janata, Michael – G43 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 O-O 6. a3 Bxc3+ 7. Qxc3 Ne4 8. Qc2 d5 9. e3 Bd7 10. Bd3 f5

E33b — Classical

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 Nc6 5.Nf3

Les coups candidats

5…d6 — 67.4% (3090 parties) →

Ambassadeurs : Vlassov, Nikolai (21x), Eliskases, Erich (14x), Simmelink, Joop Theo (14x), Euwe, Max (13x), Reshevsky, Samuel (11x), Orlov, Georgi (11x), Morin, Stephane (11x), Milner Barry, Philip (10x)

5…O-O — 13.6% (625 parties)

Ambassadeurs : Bednay, Dezso (6x), Roe, Philip (5x), Toth, Lili Dr. (5x), Martin Hernandez, Jonas David (4x), Ragozin, Viacheslav (3x), Tartakower, Savielly (3x), Alekhine, Alexander (3x), Romanovsky, Pjotr (3x)

5…d5 — 13.0% (596 parties) →

Ambassadeurs : Gurgenidze, Bukhuti (8x), Naumkin, Igor (7x), Lazarev, Vladimir (6x), Inkiov, Ventzislav (6x), Kogan, Arthur (6x), Pergel, Laszlo (6x), Flohr, Salo (4x), Botvinnik, Mikhail (3x)

5…Qe7 — 2.4% (108 parties)

Ambassadeurs : Bodrogi, Mihaly (3x), Kahn, Evarth Dr. (3x), Gudbrandsen, Gustav (2x), Maximov, Dmitry (2x), Sluzhbina, Anastasiya (2x), Korobov, Anton (2x), Buchaillot, Luis Mario (2x), Promyshlyanskiy, Vitaliy (2x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	5…d6	5…O-O	5…d5	5…Qe7
<1800	110	49%	26%	13%	2%
1800-2200	1411	65%	16%	11%	3%
2200-2600	2071	73%	11%	12%	3%
2600+	61	90%	3%	3%	2%

Évolution par décennie (% des parties)

Décennie	N parties	5…d6	5…O-O	5…d5	5…Qe7
1920s	1	—	100%	—	—
1930s	142	63%	23%	13%	1%
1940s	173	75%	12%	10%	2%
1950s	96	78%	6%	15%	—
1960s	39	72%	8%	18%	3%
1970s	54	65%	6%	28%	2%
1980s	79	59%	6%	33%	1%
1990s	509	58%	10%	25%	3%
2000s	1392	66%	14%	13%	3%
2010s	1781	69%	15%	10%	2%
2020s	317	76%	13%	6%	2%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
5…d6	69%	76%	▲ +6.4%
5…O-O	15%	13%	▼ -2.1%
5…d5	10%	6%	▼ -3.2%
5…Qe7	2%	2%	-0.1%

Joueurs célèbres

Champions du monde dans cette position

Euwe, Max — 10 parties
Alekhine, Alexander — 9 parties
Botvinnik, Mikhail — 6 parties
Smyslov, Vladimir — 4 parties
Karpov, Anatoly — 2 parties
Lasker, Emanuel — 1 partie
Kasparov, Garry — 1 partie
Kramnik, Vladimir — 1 partie
Carlsen, Magnus — 1 partie
Ju, Wenjun — 1 partie
Ding, Liren — 1 partie
Gukesh D — 1 partie

Parties historiques

5…d6 — 67.4% (3090 parties)

1930 — Flohr, Salo vs Alexander, Conol Hugh — 1-0 — Hastings ENG
1931 — Flohr, Salo vs Nimzowitsch, Aron — 0-1 — Bled SLO
1932 — Van den Bosch, Johannes vs Alexander, Conol Hugh — 1-0 — Cambridge, Guildhall
1932 — Flohr, Salo vs Barry Bertomeu, Enrique — 0-1 — London ENG
1932 — Flohr, Salo vs Milner Barry, Philip — 1-0 — Londen

5…O-O — 13.6% (625 parties)

1926 — Gooding, William vs Macdonald, Ronald Cadell — 1/2-1/2 — Edinburgh SCO
1932 — Staehelin, Adolf vs Johner, Hans — 1/2-1/2 — Bern SUI
1934 — Belavenets, Sergey vs Ragozin, Viacheslav — 1-0 — Leningrad ch-URS
1935 — Mikenas, Vladas vs Tartakower, Savielly — 0-1 — Lodz Lodz POL
1935 — Winter, William vs Tartakower, Savielly — 1-0 — Lodz POL

5…d5 — 13.0% (596 parties)

1931 — Ibanez Guillen, Enrique vs Acero Falcon, Lucas Esteban — 1-0 — Argentina
1932 — Goldberg, Grigory A vs Miasoedov, Grigory — 1-0 — Leningrad RUS
1935 — Spielmann, Rudolf vs Romanovsky, Pjotr — 1-0 — Moskou
1936 — Botvinnik, Mikhail vs Ragozin, Viacheslav — 1-0 — Moscow RUS
1936 — Friedmann Henryk vs Keller, Hans — 1-0 — Vienna AUT

5…Qe7 — 2.4% (108 parties)

1937 — Cherubim, Reinhard vs O'Kelly de Galway, Alberic — 0-1 — Brussels BEL
1937 — Levenfish, Grigory vs Konstantinopolsky, Alexander — 1/2-1/2 — Tbilisi ch-URS
1940 — Goldberg, Grigory A vs Dubinin, Peter — 0-1 — Kiev UKR
1941 — Winz, Victor vs Bolbochan, J. — 0-1 — Mar del Plata ARG
1945 — Gligorić, Svetozar vs Kulzinski, Nikolaj — 0-1 — Novi Sad SRB

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