E32k — Nimzo-Indian: Classical, 4…O-O 5.a3, 6…Ne4

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 O-O 5.a3 Bxc3+ 6.Qxc3 Ne4 * ○ Trait aux Blancs

Ouverture — Centre mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

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Plans. Qc2 (Prépare O-O-O — 99 % des parties) ; Qd3 (Centraliser la dame, Prépare O-O-O — 1 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

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Plans. ...f5 (Attaque à l'aile roi — 90 % des parties) ; ...d5 (Occuper le centre — 9 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● b2→a3	● d7→e6, f7→e6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● b4 (2v0)	● g5 (2v1)
Cases faibles	—	—
Centre	● d4 (1v0), ● e5 (1v0)	—

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bf1	● Bf1 Non développé (mob. 0)
Bc8		● Bc8 Non développé (mob. 0)
Paire de fous	● Oui	Non
Non développées	5 (● g1, ● c1, ● f1, ● 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	mobile
Ruptures	● d4-d5	● …c7-c5, ● …d7-d5, ● …e6-e5

Partie
? 1998 – Round ? – Gambrinus – 0-1 – Kasparov, Garry – G25 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O 5. a3 Bxc3+ 6. Qxc3 Ne4 7. Qc2 f5 8. g3 b6 9. Bg2 Bb7 10. Nf3 c5
1939 Buenos Aires ol f-A – Round 13 – Enevoldsen, Jens – 0-1 – Trompowsky, Octavio – G248 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O 5. a3 Bxc3+ 6. Qxc3 Ne4 7. Qc2 f5 8. e3 b6 9. Nf3 Bb7 10. Bd3 d6
1943 Salzburg – Round 1 – Schmidt, Pascal – 1/2-1/2 – Foltys, Jan – G6 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O 5. a3 Bxc3+ 6. Qxc3 Ne4 7. Qc2 f5 8. Nh3 Nc6 9. f3 Nf6 10. e3 d6
1943 UJCS-17.Kongress – Round 6 – Tikovsky, Alexandr – 1-0 – Thelen, Bedrich – G26 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O 5. a3 Bxc3+ 6. Qxc3 Ne4 7. Qc2 f5 8. Nf3 b6 9. g3 Bb7 10. Bg2 Qc8
1947 Yugoslavia Ch – Round 6 – Bidev, Pavle – 1-0 – Vukovic, Sava – G29 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O 5. a3 Bxc3+ 6. Qxc3 Ne4 7. Qc2 d5 8. Nf3 c5 9. dxc5 a5 10. g3 Na6
1948 Budapest – Round 9 – Wood, Baruch – 0-1 – Pachman, Ludek – G49 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O 5. a3 Bxc3+ 6. Qxc3 Ne4 7. Qc2 f5 8. b4 b6 9. g3 Bb7 10. Bg2 d6
1951 Marianske Lazne zt – Round 1 – Balanel, Ion – 1-0 – Tsvetkov, Alexandar K – G34 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O 5. a3 Bxc3+ 6. Qxc3 Ne4 7. Qc2 f5 8. e3 b6 9. Ne2 Bb7 10. f3 Nd6
1967 ROM Ch – Round 6 – Soos, Bela – 1-0 – Vaisman, Volodia – G37 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O 5. a3 Bxc3+ 6. Qxc3 Ne4 7. Qc2 f5 8. e3 b6 9. Ne2 Bb7 10. f3 Nf6
Amber-rapid 6th 1997 – Round 9 – Karpov, Anatoly – 1-0 – Piket, Jeroen – G48 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O 5. a3 Bxc3+ 6. Qxc3 Ne4 7. Qc2 f5 8. e3 c5 9. f3 Qh4+ 10. g3 Nxg3
Dortmund 1995 – Round 7 – Beliavsky, Alexander G – 1-0 – Lobron, Eric – G33 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O 5. a3 Bxc3+ 6. Qxc3 Ne4 7. Qc2 f5 8. e3 b6 9. Ne2 Bb7 10. f3 Nd6
Madrid 1996 – Round 4 – Azmaiparashvili, Zurab – 1/2-1/2 – Adams, Michael – G13 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O 5. a3 Bxc3+ 6. Qxc3 Ne4 7. Qc2 f5 8. e3 b6 9. Ne2 Bb7 10. f3 Nf6
Olympiad 2002 – Round 12 – Dautov, Ravil – 1/2-1/2 – Halkias, Stelios – G400 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O 5. a3 Bxc3+ 6. Qxc3 Ne4 7. Qc2 f5 8. e3 b6 9. Ne2 Bb7 10. f3 Nf6
Yerevan ol (Men) 1996 – Round 13 – Alterman, Boris – 1/2-1/2 – Adams, Michael – G195 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O 5. a3 Bxc3+ 6. Qxc3 Ne4 7. Qc2 f5 8. g3 b6 9. Bg2 Bb7 10. Nf3 Nf6

E32k — Classical (1939)

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 O-O 5.a3 Bxc3+ 6.Qxc3 Ne4

Les coups candidats

7.Qc2 — 98.8% (1530 parties)

Ambassadeurs : De Firmian, Nick (18x), Zelcic, Robert (13x), Brynell, Stellan (11x), Adams, Michael (9x), Kiriakov, Petr (9x), Pogorelov, Ruslan (8x), Sokolov, Ivan (7x), Dao, Thien Hai (7x)

7.Qd3 — 1.1% (17 parties)

Ambassadeurs : Walther, Reinhard (2x), Bazant, Petr (1x), Oral, Tomas (1x), L'Huissier, Alain (1x), Troger, Dominik Mag (1x), Dreev, Aleksey (1x), Kiriakov, Petr (1x), Petrienko, Vladimir (1x)

7.Qf3 — 0.1% (2 parties)

Ambassadeurs : Kubieziel, Jens (1x), Steiner, Karl (1x), Virle Kimaya (1x), Aditya Varun Gampa (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	7.Qc2	7.Qd3	7.Qf3
<1800	69	96%	3%	1%
1800-2200	569	99%	1%	—
2200-2600	729	99%	1%	—
2600+	32	97%	3%	—

Évolution par décennie (% des parties)

Décennie	N parties	7.Qc2	7.Qd3	7.Qf3
1950s	1	100%	—	—
1960s	2	100%	—	—
1970s	6	100%	—	—
1980s	9	100%	—	—
1990s	343	99%	1%	—
2000s	710	99%	1%	0%
2010s	404	98%	2%	0%
2020s	74	99%	1%	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
7.Qc2	98%	99%	▲ +0.6%
7.Qd3	2%	1%	-0.4%
7.Qf3	0%	0%	-0.2%

Joueurs célèbres

Champions du monde dans cette position

Botvinnik, Mikhail — 2 parties
Kasparov, Garry — 1 partie
Karpov, Anatoly — 1 partie
Anand, Viswanathan — 1 partie
Carlsen, Magnus — 1 partie

Parties historiques

7.Qc2 — 98.8% (1530 parties)

1951 — Balanel, Ion vs Tsvetkov, Aleksandar — 1-0 — Marianske Lazne zt
1965 — Litkiewicz, Kurt vs Graschdanzew — 0-1 — corr Baltic
1967 — Soos, Bela vs Vaisman, Volodia — 1-0 — Bucharest ROU
1971 — Castiglione, Roberto O vs Enricci, Juan Andres — 0-1 — CADAP tem G-7-69
1973 — Jones, Chris vs Berry, Jonathan — 0-1 — Vancouver BC CAN

7.Qd3 — 1.1% (17 parties)

1996 — Bazant, Petr vs Oral, Tomas — 0-1 — Turnov ch-CZE
1997 — L'Huissier, Alain vs Troger, Dominik Mag — 1-0 — IECC
2003 — Hort, Wolfgang vs Farmer, Walter — 0-1 — ?
2004 — Dreev, Aleksey vs Kiriakov, Petr — 1/2-1/2 — ?
2004 — Petrienko, Vladimir vs Meshcheriakova, Evgenia — 1/2-1/2 — Budapest HUN

7.Qf3 — 0.1% (2 parties)

2003 — Kubieziel, Jens vs Steiner, Karl — 1-0 — ?
2018 — Virle Kimaya vs Aditya Varun Gampa — 0-1 — Mumbai IND