Structure de pions

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

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● b5 (2v0), ● e5 (2v1), ● g5 (2v0)	—
Cases faibles	● e4	—
Centre	● e5 (2v1)	● d5 (3v2)

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. 1)
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	fermé
Ruptures	—	● …e6-e5

E33c — Nimzo-Indian: Classical, 4…Nc6 5.Nf3 d5

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 Nc6 5.Nf3 d5 * ○ Trait aux Blancs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plans. e3 (Libérer Bf1, préparer Bd3 — 29 % des parties) ; a3 (Préparer expansion aile dame — 26 % des parties) ; Bg5 (Fou actif (mobilité 7), Développer c1 — 24 % des parties) ; cxd5 (Capture en d5, Occuper le centre — 19 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plans. ...Bxc3+ (Fou actif (mobilité 6) — 26 % des parties) ; ...O-O (Mettre le roi en sécurité, connecter les tours — 26 % des parties) ; ...h6 (17 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Partie
1932 Leningrad Ch – Round 1 – Goldberg, Grigory A – 1-0 – Miasoedov, Grigory – G14 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 d5 6. Bd2 O-O 7. e3 Re8 8. O-O-O Bd7 9. h3 Bf8 10. a3 a5
1935 Moskou – Round 17 – Spielmann, Rudolf – 1-0 – Romanovsky, Pjotr – G84 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 d5 6. e3 O-O 7. a3 Bxc3+ 8. Qxc3 Bd7 9. Bd3 Qe7 10. b4 dxc4
1936 Leningrad Ch – Round 1 – Goldberg, Grigory A – 0-1 – Ragozin, Viacheslav – G14 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 d5 6. cxd5 Qxd5 7. Bd2 Bxc3 8. Bxc3 b6 9. g3 Bb7 10. Bg2 Qh5
1937 Prague – Round 4 – Graf, Sascha – 0-1 – Opocensky, Karel – G21 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 d5 6. cxd5 exd5 7. Bg5 h6 8. Bxf6 Qxf6 9. e3 O-O 10. Be2 Ne7
1938 Trade Unions – Round 17 – Kamyshov, Mikhail – 1-0 – Ragozin, Viacheslav – G135 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 d5 6. e3 O-O 7. Bd3 Qe7 8. O-O dxc4 9. Bxc4 e5 10. Nd5 Nxd5
1939 Buenos Aires ol f-A – Round 3 – Feigin, Movsa – 1-0 – Luckis, Marcos – G45 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 d5 6. e3 O-O 7. a3 Bxc3+ 8. Qxc3 Bd7 9. Bd3 dxc4 10. Bxc4 a5
1939 Buenos Aires ol f-A – Round 3 – Petrov, Vladimir (ENG) – 1-0 – Mikenas, Vladas – G46 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 d5 6. a3 Bxc3+ 7. Qxc3 a5 8. b3 O-O 9. e3 Re8 10. Bb2 Bd7
1939 Buenos Aires ol f-A – Round 7 – Capablanca, Jose – 1-0 – Mikenas, Vladas – G131 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 d5 6. a3 Bxc3+ 7. Qxc3 a5 8. b3 O-O 9. Bg5 h6 10. Bxf6 Qxf6
1939 Leningrad ch-URS – Round 17 – Kotov Lundqvist, Alex – 0-1 – Botvinnik, Mikhail – G139 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 d5 6. e3 O-O 7. a3 Bxc3+ 8. Qxc3 Bd7 9. b3 a5 10. Bd3 a4
1939 olm Buenos Aires – Round ? – Feigin, Movsa – 1-0 – Luckis, Marcos – G4 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 d5 6. e3 O-O 7. a3 Bxc3+ 8. Qxc3 Bd7 9. Bd3 dxc4 10. Bxc4 a5
1939 SCO-ch52/ – Round 9 – Combe, Robert F – 1/2-1/2 – Winter, William – G16 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 d5 6. cxd5 Qxd5 7. e3 e5 8. Nxe5 Bxc3+ 9. bxc3 Nxe5 10. dxe5 Qxe5
1940 New York ch-USA – Round 12 – Bernstein, Sidney – 0-1 – Fine, Richard Alvaro Adrien – G67 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 d5 6. cxd5 exd5 7. Bg5 h6 8. Bf4 Ne4 9. e3 g5 10. Be5 f6
1944 Moskou ch-URS – Round 1 – Flohr, Salo – 1/2-1/2 – Smyslov, Vladimir – G40 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 d5 6. cxd5 exd5 7. Bg5 Qd6 8. Bxf6 Qxf6 9. e3 Bf5 10. Bd3 Bxd3
1944 URS-ch13 – Round ? – Flohr, Salo – 1/2-1/2 – Smyslov, Vasily – G7 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 d5 6. cxd5 exd5 7. Bg5 Qd6 8. Bxf6 Qxf6 9. e3 Bf5 10. Qd3 Bxd3
1945 Moscow Ch – Round 2 – Flohr, Salo – 1/2-1/2 – Fridstein, German – G7 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 d5 6. cxd5 exd5 7. Bg5 Qd6 8. Bxf6 Qxf6 9. a3 Bxc3+ 10. Qxc3 Bg4
1945 Moskou ch-URS – Round 1 – Flohr, Salo – 1-0 – Kan, Ilya A – G50 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 d5 6. a3 Bxc3+ 7. Qxc3 Ne4 8. Qb3 O-O 9. e3 b6 10. Bd3 Bb7
1945 Novi Sad – Round 14 – Vukovic, Sava – 1/2-1/2 – Trifunovic, Petar – G145 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 d5 6. Bf4 dxc4 7. e3 Bd6 8. Be5 Nb4 9. Qd1 Nd3+ 10. Bxd3 cxd3
1946 Mar del Plata – Round 18 – Maderna, Carlos – 0-1 – Corte, Cesar J – G154 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 d5 6. cxd5 exd5 7. a3 Bxc3+ 8. bxc3 Ne4 9. e3 O-O 10. Bd3 Re8
1946 Mar del Plata – Round 3 – Sanguinetti, Ricardo – 1-0 – Corte, Cesar J – G42 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 d5 6. Bg5 h6 7. Bxf6 Qxf6 8. e3 O-O 9. a3 Bxc3+ 10. Qxc3 Re8
1946 Moscow RUS – Round 1 – Kotov Lundqvist, Alex – 1-0 – Baturinsky, Victor – G12 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 d5 6. e3 O-O 7. a3 Bd6 8. c5 Be7 9. Bd3 h6 10. h3 e5
1946 Moscow-Prague – Round 9 – O'Reilly, Edward – 1/2-1/2 – Lilienthal, Andor – G38 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 d5 6. e3 O-O 7. Bd2 dxc4 8. Bxc4 Bd6 9. Bb5 e5 10. Bxc6 exd4
1946 NED Ch prelim I – Round 1 – Marwitz, Jan Hendrik – 1/2-1/2 – Van den Berg, Carel B – G1 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 d5 6. e3 O-O 7. a3 Bxc3+ 8. bxc3 b6 9. cxd5 exd5 10. Bd3 Na5
1946 San Francisco ARG – Round 7 – Menasse, J. – 0-1 – Corte, Cesar J – G16 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 d5 6. e3 Bd7 7. a3 Bxc3+ 8. Qxc3 O-O 9. Bd3 a5 10. b3 a4
1948 GER Ch – Round 5 – Rellstab, Ludwig Sr – 1/2-1/2 – Czaya, Richard – G10 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 d5 6. e3 O-O 7. a3 Bxc3+ 8. bxc3 Re8 9. Be2 e5 10. cxd5 Qxd5
1950 CSR-BUL Prague CZE – Round 2 – Kottnauer, Cenek – 1/2-1/2 – Dimitrov Garcia, Dimitri Ivaylov – G8 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 d5 6. e3 O-O 7. a3 Bxc3+ 8. Qxc3 Re8 9. b4 Ne7 10. Bb2 b6
1950 DDR Ch – Round 14 – Platz, Hans – 0-1 – Nuesken Fritz – G27 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 d5 6. cxd5 exd5 7. a3 Bxc3+ 8. Qxc3 O-O 9. Bf4 Ne4 10. Qc1 Bf5
1950 Szcawno Zdroj – Round ? – Sapi, Laszlo – 0-1 – Keres, Paul – G3 1. d4 Nf6 2. c4 e6 3. Nf3 Nc6 4. Nc3 Bb4 5. Qc2 d5 6. e3 O-O 7. a3 Be7 8. b4 b6 9. Be2 Bb7 10. O-O a5
1950 Szczawno Zdroj – Round 1 – Szapiel, Mateusz – 0-1 – Keres, Paul – G1 1. d4 Nf6 2. c4 e6 3. Nf3 Nc6 4. Nc3 Bb4 5. Qc2 d5 6. e3 O-O 7. a3 Be7 8. b4 b6 9. Be2 Bb7 10. O-O a5
1951 Moskou ch-URS – Round 1 – Lipnitsky, Isaac – 0-1 – Smyslov, Vladimir – G59 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 d5 6. a3 Bxc3+ 7. bxc3 Na5 8. Ne5 Nd7 9. Nxd7 Bxd7 10. cxd5 exd5
1953 POL-ch11 – Round 11 – Gadalinski, Jan – 1-0 – Ziembinski, Marian – G66 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 d5 6. Bg5 h6 7. Bf4 O-O 8. e3 Re8 9. Bg3 a6 10. cxd5 exd5
1956 Moscow olm prel – Round 1 – Lindblom, Peter – 1/2-1/2 – Kolarov, Atanas S. – G10 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 d5 6. cxd5 exd5 7. Bg5 h6 8. Bxf6 Qxf6 9. e3 O-O 10. a3 Bxc3+
1957 Toronto wch-jr – Round 3 – Gerusel, Mathias – 0-1 – Lombardy, William J – G7 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 d5 6. a3 Bxc3+ 7. Qxc3 Ne4 8. Qc2 e5 9. dxe5 Bf5 10. Qa4 O-O
1957 Warchau ch POL – Round 16 – Gromek, Jozef – 1-0 – Branicki, Ignacy – G83 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 d5 6. a3 Bd6 7. e3 dxc4 8. Bxc4 O-O 9. Bd2 e5 10. dxe5 Nxe5
1961 USA Ch Open 62th – Round 2 – Svalberg, Charles – 0-1 – Bisguier, Arthur B – G5 1. c4 Nf6 2. d4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 d5 6. cxd5 exd5 7. e3 O-O 8. Be2 Re8 9. O-O a6 10. Bd2 Bd6
1965 Hungary – Round 1 – Forintos, Gyozo V – 1/2-1/2 – Szilagyi, Peter – G38 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 d5 6. a3 Bxc3+ 7. Qxc3 a5 8. e3 O-O 9. Qc2 Re8 10. b3 a4

E33c — Classical (1932)

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 Nc6 5.Nf3 d5

Les coups candidats

6.e3 — 33.9% (220 parties)

Ambassadeurs : Gogichaishvili, Giorgi (2x), Brousseau, Yvan (2x), Laurin, Jacques (2x), Furman, Boris (2x), Haag, Russell A (2x), Niebuhr, Gerd (2x), Titzhoff, Frank, Dr. (2x), Palladino, Mario (2x)

6.a3 — 25.1% (163 parties)

Ambassadeurs : Inkiov, Ventzislav (3x), Forintos, Gyozo V (2x), Kakageldyev, Amanmurad (2x), Abanin, Vladimir (2x), Velikov, Petar (2x), Gromek, Jozef (1x), Branicki, Ignacy (1x), Lacroix, Serge (1x)

6.Bg5 — 24.0% (156 parties)

Ambassadeurs : Gurgenidze, Bukhuti (2x), Petursson, Margeir (2x), Lahlum, Hans Olav (2x), Lidacis, A (1x), Grivainis, Konstantin (1x), Gadalinski, Jan (1x), Ziembinski, Marian (1x), McClain, G. (1x)

6.cxd5 — 15.3% (99 parties)

Ambassadeurs : Varga, Peter (3x), Zemerov, Vladimir (3x), Kogan, Arthur (3x), Naumkin, Igor (2x), Van der Wal, Jannes (2x), Stuhlmann, Florian (2x), Kotov, Alexander (1x), Smyslov, Vasily (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	6.e3	6.a3	6.Bg5	6.cxd5
<1800	56	38%	20%	29%	11%
1800-2200	193	41%	23%	19%	16%
2200-2600	248	25%	33%	23%	18%
2600+	2	—	—	50%	50%

Évolution par décennie (% des parties)

Décennie	N parties	6.e3	6.a3	6.Bg5	6.cxd5
1950s	14	36%	21%	21%	21%
1960s	7	29%	57%	—	14%
1970s	17	41%	35%	18%	6%
1980s	28	36%	25%	25%	11%
1990s	141	23%	26%	26%	23%
2000s	212	36%	24%	26%	12%
2010s	202	39%	25%	21%	14%
2020s	28	32%	21%	25%	18%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
6.e3	39%	32%	▼ -6.5%
6.a3	25%	21%	▼ -3.3%
6.Bg5	21%	25%	▲ +3.7%
6.cxd5	14%	18%	▲ +3.5%

Parties historiques

6.e3 — 33.9% (220 parties)

1950 — Kottnauer, Cenek vs Dimitrov Petar — 1/2-1/2 — CSR-BUL Prague CZE
1950 — Shapira, Lilia vs Keres Paul Petrovich — 0-1 — ?
1950 — Al Balushi, Shuaib Abdul Wahab vs Keres, Paul — 0-1 — Szcawno Zdroj
1951 — Knothe, Karl vs Nuesken, Fritz — 1-0 — Schwerin GER
1952 — Benini, Clarice vs Krausz, Andrea — 1-0 — Firenze ITA

6.a3 — 25.1% (163 parties)

1951 — Lipnitsky, Isaac vs Smyslov, Vasily — 0-1 — Moskou ch-URS
1957 — Gromek, Jozef vs Branicki, Ignacy — 1-0 — Warchau ch POL
1957 — Gerusel, Mathias vs Lombardy, William J — 0-1 — Toronto wch-jr
1965 — Lacroix, Serge vs De Gruchy, Phil — 1-0 — Montreal CAN
1965 — Forintos, Gyozo V vs Szilagyi, Peter — 1/2-1/2 — HUN

6.Bg5 — 24.0% (156 parties)

1952 — Lidacis, A vs Grivainis, Konstantin — 1/2-1/2 — Latvian Exiles 5254
1953 — Gadalinski, Jan vs Ziembinski, Marian — 1-0 — Krakow POL
1956 — McClain, G. vs Fischheimer, Daniel — 0-1 — Oklahoma City, OK USA
1970 — Doroshkievich, Vladimir K vs Tseshkovsky, Vitaly — 0-1 — Kuibyshev ch-RUS
1972 — Knaak, Rainer vs Estrin, Yakov — 1-0 — Olomouc CZE

6.cxd5 — 15.3% (99 parties)

1950 — Kotov, Alexander vs Smyslov, Vasily — 0-1 — Budapest HUN
1950 — Platz, Hans vs Nuesken, Fritz — 0-1 — Soemmerda GER
1956 — Lindblom, Per vs Kolarov, Atanas S. — 1/2-1/2 — Moskou olm
1961 — Servais, Charles vs Bisguier, Arthur B — 0-1 — San Francisco, CA USA
1972 — Ree, Hans vs Bellin, Robert — 1-0 — Teesside ENG

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