E39k — Nimzo-Indian: Classical, Pirc, 6.a3 Bxc5 7.Nf3 Nc6

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 c5 5.dxc5 O-O 6.a3 Bxc5 7.Nf3 Nc6 * ○ Trait aux Blancs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : majorité aile_dame (3v2), case forte e4, case forte b5, case forte g5, paire de fous, colonne d.
Faiblesses adverses : arriéré d7, Bc8 enfermé.
Problèmes : roi au centre, Bc1 enfermé, Bf1 enfermé, arriéré b2, 4 pièces non développées (C1, F1, A1, H1).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● e4 — Centre d4+e4, menace e5, libère Bf1
● Bg5 — Clouer Nf6
● h3 — Empêcher ...Bg4
● Rd — Tour sur colonne d

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : majorité centre (2v1), case forte d4, Bc5 actif, paire de fous, colonne c.
Faiblesses adverses : arriéré b2, Bc1 enfermé, Bf1 enfermé, roi blanc au centre.
Problèmes : Bc8 enfermé, arriéré d7.
Plans :
● ...d6 — Libérer Bc8
● ...Bg4 — Clouer Nf3
● ...d5 — Rupture
● ...e5 — Rupture
● ...Rc — Tour sur colonne c

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

E39k — Classical Pirc

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 c5 5.dxc5 O-O 6.a3 Bxc5 7.Nf3 Nc6

Eval: [+0.49]

Les coups candidats

8.Bg5 — 65.4% (703 parties)

Ambassadeurs : Forintos, Gyozo V (7x), Seirawan, Yasser (7x), Rittner, Horst (5x), Suba, Mihai (5x), Bohm, Hans (4x), Prandstetter, Eduard (4x), Siger, Csaba (4x), Barth, Hans Juergen (4x)

8.Bf4 — 18.3% (197 parties)

Ambassadeurs : Whiteley, Andrew J (6x), Farago, Ivan (4x), Forintos, Gyozo V (4x), Chekhov, Valery A (4x), Ree, Hans (3x), Arlandi, Ennio (3x), Van der Wiel, John T.H. (3x), Condie, Mark L (3x)

8.e3 — 8.3% (89 parties)

Ambassadeurs : Euwe, Max (2x), Keller-Hermann, Edith (2x), Malek, Daniel (2x), Rossi, Giampiero (2x), Baburin, Alexander (2x), Szigeti, Miklos (1x), Szabo, Laszlo (1x), Rohacek, Ivan (1x)

8.b4 — 7.3% (78 parties)

Ambassadeurs : Najdorf, Miguel (3x), Reshevsky, Samuel (3x), Martins, Kurt (2x), Spielmann De Gea, David (1x), Lazarne Vajda, Szidonia (1x), Olivera, Alfredo (1x), Rossetto, Hector (1x), Oestreich, Reinhard (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	8.Bg5	8.Bf4	8.e3	8.b4
<1800	17	65%	24%	12%	—
1800-2200	249	62%	13%	11%	13%
2200-2600	508	66%	24%	6%	4%
2600+	23	83%	13%	4%	—

Évolution par décennie (% des parties)

Décennie	N parties	8.Bg5	8.Bf4	8.e3	8.b4
1920s	1	—	—	—	100%
1930s	3	33%	—	67%	—
1940s	1	100%	—	—	—
1950s	24	8%	8%	42%	33%
1960s	6	17%	—	67%	17%
1970s	27	37%	44%	4%	15%
1980s	139	58%	34%	4%	4%
1990s	270	72%	14%	8%	6%
2000s	317	71%	17%	6%	5%
2010s	244	67%	15%	6%	9%
2020s	43	56%	14%	26%	5%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
8.Bg5	67%	56%	▼ -11.4%
8.Bf4	15%	14%	▼ -1.2%
8.e3	6%	26%	▲ +19.4%
8.b4	9%	5%	▼ -4.8%

Joueurs célèbres

Champions du monde dans cette position

Euwe, Max — 3 parties
Karpov, Anatoly — 3 parties
Smyslov, Vladimir — 1 partie
Kasparov, Garry — 1 partie
Kramnik, Vladimir — 1 partie

Parties historiques

8.Bg5 — 65.4% (703 parties)

1939 — Van Scheltinga, Theo vs Golombek, Harry — 1/2-1/2 — The Hague NED
1949 — Kotov Lundqvist, Alex vs Szabo, Ladislav — 1-0 — Budapest HUN
1950 — Van Scheltinga, Theo vs O'Kelly de Galway, Alberic — 1/2-1/2 — Amsterdam NED
1955 — Keller, Dieter vs Broden, Per — 1-0 — Antwerp BEL
1960 — Levin, Mikhail vs Novopashin, Arkady — 0-1 — Kiev UKR

8.Bf4 — 18.3% (197 parties)

1952 — Euwe, Max vs Lundin, Erik — 0-1 — Zurich SUI
1958 — Wise, Thomas H vs Fazekas, Stephan — 1/2-1/2 — Leamington
1973 — Forintos, Gyozo V vs Mititelu, Gheorghe — 1/2-1/2 — Bath etc
1975 — Forintos, Gyozo V vs Tompa, Janos — 1-0 — Kecskemet HUN
1975 — Hjorth, Sune vs Wikstrom, Bo-Gunnar — 1-0 — cr.

8.e3 — 8.3% (89 parties)

1934 — Rohacek, Ivan vs Eliskases, Erich — 0-1 — Budapest HUN
1936 — Szigeti, Miklos vs Szabo, Laszlo — 1/2-1/2 — Budapest HUN
1951 — Euwe, Max vs Unzicker, Wolfgang — 1-0 — Duesseldorf GER
1951 — Scheltinga Muhrin vs Euwe, Max and vd Berg — 0-1 — Radio LB
1951 — Scheltinga Muhring vs Euwe vd Berg — 0-1 — radio

8.b4 — 7.3% (78 parties)

1928 — Spielmann De Gea, David vs Lazarne Vajda, Szidonia — 1-0 — It, Budapest HUN
1952 — Najdorf, Miguel vs Reshevsky, Samuel — 0-1 — Mexico/N.York/Salvador
1952 — Najdorf, Miguel vs Reshevsky, Samuel — 0-1 — New York, NY USA
1952 — Najdorf, Miguel vs Reshevsky, Samuel — 1/2-1/2 — Mexico/N.York/Salvador
1954 — Bronstein, David I vs Denker, Arnold S — 1-0 — New York, NY USA

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	● b2	● d7
Chaînes	● b2→a3	● d7→e6, f7→e6
Passés	—	—
Majorité	● aile_dame 3v2	● centre 2v1

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● e4 (2v1), ● b5 (2v0), ● g5 (2v0)	● d4 (2v1)
Cases faibles	—	—
Centre	● e4 (2v1)	● d4 (2v1)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● d	● c

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bf1	● Bf1 Non développé (mob. 0)
Bc5		● Bc5 Actif (mob. 8)
Bc8		● Bc8 Non développé (mob. 0)
Paire de fous	● Oui	● Oui
Non développées	4 (c1, f1, a1, h1)	2 (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	semi-ouvert
Ruptures	● e2-e3	● …d7-d6, ● …d7-d5, ● …e6-e5

Partie
1934 Budapest – Round ? – Rohacek, Ivan – 0-1 – Eliskases, Erich – G16 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5 5. dxc5 Nc6 6. Nf3 Bxc5 7. a3 O-O 8. e3 b6 9. Bd3 Bb7 10. O-O d5
1936 Budapest – Round 4 – Szigeti, Miklos – 1/2-1/2 – Szabo, Laszlo – G15 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5 5. dxc5 Nc6 6. Nf3 O-O 7. a3 Bxc5 8. e3 b6 9. Be2 Bb7 10. O-O Rc8
1949 Budapest-Moscow – Round 7 – Kotov Lundqvist, Alex – 1-0 – Szabo, Ladislav – G50 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5 5. dxc5 Nc6 6. Nf3 O-O 7. a3 Bxc5 8. Bg5 h6 9. Bh4 g5 10. Bg3 d5
1950 Amsterdam – Round 13 – Van Scheltinga, Theo – 1/2-1/2 – O'Kelly de Galway, Alberic – G127 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5 5. dxc5 O-O 6. a3 Bxc5 7. Nf3 Nc6 8. Bg5 Nd4 9. Nxd4 Bxd4 10. e3 Qa5
1952 Zuerich LB – Round ? – Euwe, Max – 0-1 – Lundin, Erik – G7 1. c4 Nf6 2. d4 e6 3. Nc3 Bb4 4. Qc2 c5 5. dxc5 O-O 6. a3 Bxc5 7. Nf3 Nc6 8. Bf4 Nh5 9. Bg3 f5 10. e3 b6
1953 Zagreb – Round 10 – Nedeljkovic, Srecko M – 1/2-1/2 – Preinfalk, Anton – G83 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5 5. dxc5 O-O 6. a3 Bxc5 7. Nf3 Nc6 8. e3 b6 9. Be2 Bb7 10. O-O Rc8
1954 Munich zt – Round 16 – Castaldi, Vincenzo – 1/2-1/2 – Bouwmeester, Hans – G101 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5 5. dxc5 O-O 6. a3 Bxc5 7. Nf3 Nc6 8. g3 b6 9. Bg2 Bb7 10. O-O Rc8
1954 New York – Round 4 – Bronstein, David I – 1-0 – Denker, Arnold S – G16 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5 5. dxc5 Nc6 6. Nf3 O-O 7. a3 Bxc5 8. b4 Be7 9. Bb2 d5 10. e3 Bd7
1955 Wch U20 prel-C – Round 5 – Keller, Dieter – 1-0 – Broden, Per – G13 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5 5. dxc5 O-O 6. a3 Bxc5 7. Nf3 Nc6 8. Bg5 Nd4 9. Nxd4 Bxd4 10. e3 Qa5
1956 Montevideo – Round 1 – Olivera, Alfredo – 0-1 – Rossetto, Hector – G13 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5 5. dxc5 Nc6 6. Nf3 O-O 7. a3 Bxc5 8. b4 Be7 9. Bb2 b6 10. e3 Bb7
1958 GDR Ch Schkopau GER – Round 10 – Keller-Hermann, Edith – 1/2-1/2 – Dorawa, Bernhard – G58 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5 5. dxc5 O-O 6. a3 Bxc5 7. Nf3 Nc6 8. e3 d5 9. b4 Be7 10. Bb2 dxc4
1958 URS Ch sf – Round ? – Tarasov, Vitaly – 1/2-1/2 – Shaposhnikov, Yury – G35 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5 5. dxc5 Nc6 6. Nf3 O-O 7. a3 Bxc5 8. b4 Be7 9. Bb2 d6 10. e3 Ng4
1961 Rheda ch OWL – Round 1 – Oestreich, Reinhard – 0-1 – Speer, Albrecht – G1 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5 5. dxc5 O-O 6. a3 Bxc5 7. Nf3 Nc6 8. e3 b6 9. Be2 Bb7 10. O-O Rc8
1965 Hamburg etc – Round 7 – Udovcic, Mijo – 1-0 – Kramer, Hanspeter – G80 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5 5. dxc5 O-O 6. a3 Bxc5 7. Nf3 Nc6 8. e3 b6 9. Be2 Bb7 10. O-O Rc8
1966 OWL Ch – Round 7 – Oestreich, Reinhard – 1-0 – Groenegress, Wilfried – G25 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5 5. dxc5 O-O 6. a3 Bxc5 7. Nf3 Nc6 8. b4 Be7 9. Bb2 b6 10. e3 Bb7
Amsterdam 1981 – Round ? – Karpov, Anatoly – 1/2-1/2 – Portisch, Lajos – G29 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5 5. dxc5 O-O 6. a3 Bxc5 7. Nf3 Nc6 8. Bg5 Nd4 9. Nxd4 Bxd4 10. e3 Qa5
Amsterdam 1981 – Round 10 – Donner, Jan Hein – 1/2-1/2 – Polugaevsky, Lev – G24 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5 5. dxc5 O-O 6. a3 Bxc5 7. Nf3 Nc6 8. Bg5 Nd4 9. Nxd4 Bxd4 10. e3 Qa5
FIDE World Cup 2015 – Round 1.1 – Wang, Hao(ZJWZ) – 1-0 – Perunovic, Milos – G15 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5 5. dxc5 O-O 6. a3 Bxc5 7. Nf3 Nc6 8. Bg5 h6 9. Bh4 Be7 10. Rd1 b6
Interpolis 1983 – Round 1 – Seirawan, Yasser – 1/2-1/2 – Van der Wiel, John T.H. – G18 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5 5. dxc5 O-O 6. a3 Bxc5 7. Nf3 Nc6 8. Bf4 d5 9. Rd1 e5 10. Bg5 d4
Lindores Abbey Tal Memorial 2021 – Round 13.22 – Indjic, Aleksandar – 0-1 – Petrosyan, Manuel – G562 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5 5. dxc5 Nc6 6. Nf3 O-O 7. a3 Bxc5 8. Bg5 Be7 9. O-O-O b6 10. e4 Bb7
Moskou ch-URS 1973 – Round 1 – Grigorian, Kamo – 0-1 – Smyslov, Vassily – G21 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5 5. dxc5 Nc6 6. Nf3 O-O 7. a3 Bxc5 8. b4 Be7 9. Bb2 b6 10. e3 Bb7
Tal Memorial Blitz 2008 – Round 11 – Eljanov, Pavel – 0-1 – Ivanchuk, Vasyl – G92 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5 5. dxc5 O-O 6. a3 Bxc5 7. Nf3 Nc6 8. Bf4 e5 9. Bg5 Nd4 10. Nxd4 exd4
Tilburg Fontys 1997 – Round 10 – Kasparov, Garry – 1/2-1/2 – Kramnik, Vladimir – G35 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5 5. dxc5 O-O 6. a3 Bxc5 7. Nf3 Nc6 8. Bg5 Nd4 9. Nxd4 Bxd4 10. e3 Qa5
World Cup 1991 – Round 6 – Salov, Valery – 1/2-1/2 – Ljubojevic, Ljubomir – G41 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5 5. dxc5 O-O 6. a3 Bxc5 7. Nf3 Nc6 8. Bg5 Nd4 9. Nxd4 Bxd4 10. e3 Qa5
World Cup 1991 – Round 8 – Salov, Valery – 1-0 – Andersson, Ulf 1949 – G58 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5 5. dxc5 O-O 6. a3 Bxc5 7. Nf3 Nc6 8. Bg5 Nd4 9. Nxd4 Bxd4 10. e3 Qa5

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