E36b — Nimzo-Indian: Classical, Noa, 5.a3 Be7

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 d5 5.a3 Be7 * ○ Trait aux Blancs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plans. Nf3 (Développer g1 — 44 % des parties) ; cxd5 (Capture en d5, Occuper le centre — 30 % des parties) ; Bg5 (Fou actif (mobilité 7), Développer c1 — 15 % des parties) ; e3 (Libérer Bf1, préparer Bd3 — 6 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plans. ...O-O (Mettre le roi en sécurité, connecter les tours — 40 % des parties) ; ...Nbd7 (Développer b8 — 9 % des parties) ; ...c6 (Renforcer le centre — 7 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● b2→a3	● e6→d5, f7→e6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● b5 (2v0)	—
Cases faibles	● e4	—
Centre	● e5 (1v0)	● d5 (3v2)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bf1	● Bf1 Non développé (mob. 0)
Be7		● Be7 Actif (mob. 5)
Bc8		● Bc8 Non développé (mob. 1)
Paire de fous	● Oui	● Oui
Non développées	5 (● g1, ● c1, ● f1, ● a1, ● h1)	4 (● b8, ● 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

Partie
1928 Berlin Cafe Koenig – Round 2 – Ahues, Carl – 1/2-1/2 – Gruenfeld, Ernst – G5 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. a3 Be7 6. Nf3 O-O 7. e3 Nbd7 8. Bd3 dxc4 9. Bxc4 c5 10. dxc5 Nxc5
1936 Novi Sad – Round 1 – Broeder, Mirko – 1-0 – Vukovic, Sava – G2 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. a3 Be7 6. Nf3 Nbd7 7. Bg5 c6 8. e3 a6 9. Rd1 b5 10. c5 e5
1937 Bad Nauheim/Stuttgart/Garmisch – Round 5 – Euwe, Max – 0-1 – Bogoljubow, Efim – G8 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. a3 Be7 6. Bg5 h6 7. Bh4 Nbd7 8. e3 O-O 9. Nf3 c6 10. Rd1 Ne8
1938 Bad Oeynhausen – Round 3 – Reinhardt, Heinrich – 0-1 – Rellstab, Ludwig – G29 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. a3 Be7 6. Nf3 O-O 7. Bg5 c6 8. e3 Nbd7 9. Bd3 a6 10. c5 Re8
1939 Berlijn m – Round 7 – Eliskases, Erich – 1-0 – Bogoljubow, Efim – G9 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. a3 Be7 6. Bg5 h6 7. Bh4 O-O 8. Nf3 Nbd7 9. e3 c6 10. Bd3 Ne8
1941 Baarn I – Round 1 – Koomen, Fenny – 0-1 – Kmoch, Hans – G2 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. a3 Be7 6. Nf3 O-O 7. e4 dxe4 8. Nxe4 Nc6 9. Be3 Nxe4 10. Qxe4 f5
1941 Montevideo – Round 1 – Olivera, Alfredo – 1/2-1/2 – Engels, Ludwig – G1 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. a3 Be7 6. Nf3 O-O 7. Bg5 h6 8. Bh4 c6 9. e3 b6 10. Ne5 Nbd7
1941 Trencianske Teplice – Round 4 – Foltys, Jan – 1-0 – Ahues, Carl – G14 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. a3 Be7 6. Nf3 Nbd7 7. Bg5 c6 8. e3 dxc4 9. Bxc4 Nd5 10. Bxe7 Qxe7
1943 Rio de Janeiro free – Round ? – Cruz, Walter – 0-1 – Eliskases, Erich – G2 1. c4 e6 2. d4 Nf6 3. Nc3 Bb4 4. Qc2 d5 5. a3 Be7 6. Bg5 h6 7. Bh4 O-O 8. e3 c6 9. Nf3 Ne8 10. Bxe7 Qxe7
1943 Rio de Janeiro free – Round ? – Silva Rocha, Adhemar – 1/2-1/2 – Eliskases, Erich – G4 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. a3 Be7 6. Nf3 O-O 7. e3 b6 8. cxd5 exd5 9. b4 Bb7 10. Bb2 Nbd7
1945 Novi Sad – Round 20 – Gligorić, Svetozar – 1-0 – Fajer Abdallah Mohamad – G188 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. a3 Be7 6. Bg5 Nbd7 7. e3 c6 8. Nf3 dxc4 9. Bxc4 Nd5 10. Bxe7 Qxe7
1947 HUN-AUT tt – Round 1 – Florian, Tibor – 1-0 – Krassnig, Otto – G1 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. a3 Be7 6. Nf3 Nbd7 7. Bg5 dxc4 8. e4 O-O 9. Bxc4 h6 10. Bh4 c5
1948 New York – Round 1 – Siff, Anton – 0-1 – Kashdan, Isaac – G1 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. a3 Be7 6. cxd5 exd5 7. Bf4 c6 8. h3 O-O 9. e3 Re8 10. Bd3 Nbd7
1949 Leningrad – Round 3 – Zamikhovsky, Abram – 1/2-1/2 – Shamaev, Leonid – G36 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. a3 Be7 6. Bg5 O-O 7. e3 b6 8. cxd5 Nxd5 9. Bxe7 Nxe7 10. Bd3 h6
1949 POL-CSR Katowice POL – Round 2 – Gadalinski, Jan – 0-1 – Opocensky, Karel – G8 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. a3 Be7 6. Nf3 Nbd7 7. cxd5 exd5 8. Bf4 c6 9. e3 Nf8 10. Bd3 Ne6
1952 Helsinki olm – Round 1 – Kramer, Hanspeter – 1/2-1/2 – Pedersen, Ebbe – G57 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. a3 Be7 6. cxd5 exd5 7. Bg5 O-O 8. e3 Re8 9. Bd3 h6 10. Bh4 Nbd7
1959 Budapest-Leningrad m – Round 3.5 – Bondarevsky, Igor – 1/2-1/2 – Dely, Peter – G11 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. a3 Be7 6. Nf3 O-O 7. Bg5 h6 8. Bf4 b6 9. cxd5 exd5 10. g3 c5
1959 Corr – Round 1 – Tommaseo – 0-1 – Palmiotto, Fiorentino – G17 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. a3 Be7 6. Bg5 h6 7. Bh4 c6 8. e3 Nbd7 9. Nf3 Qa5 10. Bd3 dxc4
1968 Bristol ch-BCF – Round 7 – Wood, Beau – 0-1 – Botterill, George S. – G74 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. a3 Be7 6. Nf3 O-O 7. Bg5 Nbd7 8. e3 b6 9. cxd5 exd5 10. Bd3 Bb7
1975 Milan – Round 2 – Ljubojevic, Ljubomir – 1/2-1/2 – Petrosian, Tigran L. – G19 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. a3 Be7 6. Nf3 O-O 7. e3 b6 8. cxd5 exd5 9. b4 Re8 10. Bd3 Bb7
Milan 3pl 1975 – Round 2 – Ljubojevic, Ljubomir – 1/2-1/2 – Petrosian, Tigran V. – G2 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. a3 Be7 6. Nf3 O-O 7. e3 b6 8. cxd5 exd5 9. b4 Re8 10. Bd3 Bb7
World Blitz 2009 – Round 42 – Morozevich, Alexander – 0-1 – Mamedyarov, Shakhriyar – G436 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. a3 Be7 6. cxd5 exd5 7. Bg5 h6 8. Bh4 O-O 9. e3 c6 10. Bd3 Nbd7

E36b — Classical, Noa (1928)

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 d5 5.a3 Be7

Les coups candidats

6.Nf3 — 44.0% (122 parties)

Ambassadeurs : Grigoryan, Karen A. (2x), Beliavsky, Alexander G (2x), Djuric, Stefan (2x), Lucas Leon, Angel (2x), Bogoljubow, Efim (1x), Unzicker, Ferdinand, Dr. (1x), Wood, Baruch (1x), Botterill, George S. (1x)

6.cxd5 — 30.0% (83 parties)

Ambassadeurs : Ridolfi, Raffaele (2x), Kramer, Haije (1x), Pedersen, Eigil (1x), Nautsch, Werner (1x), Spassky, Boris V. (1x), Poschel, Paul (1x), Jiang, Brooks (1x), Petursson, Margeir (1x)

6.Bg5 — 15.2% (42 parties)

Ambassadeurs : Albiolo, Tommaso (1x), Palmiotto, Fiorentino (1x), Watt, David Anthony (1x), Marcussi, Bartolome J (1x), Westbrock, C. (1x), Harrell, Bridget D (1x), Weichselbaumer, Ernst (1x), Lambert, Hans (1x)

6.e3 — 6.5% (18 parties)

Ambassadeurs : Urcan, Olimpiu G (1x), Georgescu, Cristian (1x), Masera, Javier Horacio (1x), Omar, Gonzalo Martin (1x), Odachowski, Arthur (1x), Yearwood, Roy (1x), Dubessay, Bastien (1x), Sondag Husser, Mickael (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	6.Nf3	6.cxd5	6.Bg5	6.e3
<1800	22	45%	18%	14%	9%
1800-2200	128	36%	34%	17%	9%
2200-2600	89	55%	29%	12%	1%
2600+	4	75%	25%	—	—

Évolution par décennie (% des parties)

Décennie	N parties	6.Nf3	6.cxd5	6.Bg5	6.e3
1950s	6	33%	17%	50%	—
1960s	2	50%	—	50%	—
1970s	7	71%	—	14%	—
1980s	13	46%	31%	15%	—
1990s	33	45%	24%	21%	6%
2000s	69	42%	29%	14%	10%
2010s	103	42%	34%	13%	8%
2020s	44	48%	34%	11%	2%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
6.Nf3	42%	48%	▲ +6.0%
6.cxd5	34%	34%	+0.1%
6.Bg5	13%	11%	▼ -1.3%
6.e3	8%	2%	▼ -5.5%

Parties historiques

6.Nf3 — 44.0% (122 parties)

1950 — Bogoljubow, Efim vs Unzicker, Ferdinand, Dr. — 0-1 — Bad Pyrmont GER
1959 — Bondarevsky, Igor vs Dely, Peter — 1/2-1/2 — Budapest HUN
1968 — Wood, Baruch vs Botterill, George S. — 0-1 — Bristol ch-BCF
1971 — Ungureanu, Emil vs Bobotsov, Milko G — 1/2-1/2 — Bucharest ROU
1974 — Grigoryan, Karen A. vs Beliavsky, Alexander G — 1/2-1/2 — ?

6.cxd5 — 30.0% (83 parties)

1952 — Kramer, Haije vs Pedersen, Eigil — 1/2-1/2 — Helsinki olm
1980 — Nautsch, Werner vs Spassky, Boris V. — 0-1 — GER
1984 — Poschel, Paul vs Jiang, Brooks — 0-1 — Plymouth ch-MI op
1989 — Petursson, Margeir vs Ostenstad, Berge — 1-0 — Espoo zt
1989 — Garcia Palermo, Carlos Horacio vs Nikolic, Stanimir — 0-1 — Citta di Forli

6.Bg5 — 15.2% (42 parties)

1951 — Westbrock, C. vs Harrell, Bridget D — 1-0 — Forth Worth
1952 — Weichselbaumer, Ernst vs Lambert, Hans — 1-0 — Helsinki olm
1959 — Albiolo, Tommaso vs Palmiotto, Fiorentino — 0-1 — cr.
1967 — Watt, David Anthony vs Marcussi, Bartolome J — 0-1 — Glasgow SCO
1972 — Soos, Bela vs Bohm, Hans — 1-0 — Amsterdam NED

6.e3 — 6.5% (18 parties)

1997 — Masera, Javier Horacio vs Omar, Gonzalo Martin — 1-0 — ?
1999 — Urcan, Olimpiu G vs Georgescu, Cristian — 1-0 — Deva
2000 — Odachowski, Arthur vs Yearwood, Roy — 1-0 — Calgary CAN
2000 — Rovik, Falk Rune vs Solstad, Trond — 1/2-1/2 — Gausdal NOR
2001 — Campbell, Robert J vs Lunna, Todd — 1/2-1/2 — Framingham, MA USA

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