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 mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plans. Bg5 (Fou actif (mobilité 7), Développer c1 — 65 % des parties) ; Bf4 (Fou actif (mobilité 10), Développer c1 — 18 % des parties) ; e3 (Libérer Bf1, préparer Bd3 — 8 % des parties) ; b4 (Expansion aile dame — 8 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plans. ...Nd4 (Cavalier centralisé en d4, Menace c2 — 40 % des parties) ; ...b6 (Préparer le fianchetto — 17 % des parties) ; ...Be7 (16 % des parties) ; ...d5 (Occuper le centre — 11 % des parties) ; ...h6 (8 % 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	● aile dame 3v2	—

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	mobile
Ruptures	—	● …d7-d5

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

E39k — Classical, Pirc (1934)

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

Les coups candidats

8.Bg5 — 64.9% (705 parties)

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

8.Bf4 — 18.5% (201 parties)

Ambassadeurs : Bakheet Farag (5x), Whiteley, Andrew Jonathan (4x), Forintos, Gyozo V (4x), Chekhov, Valery A (4x), Berg, Michael E (4x), Kengis, Edvins (3x), Arlandi, Ennio (3x), Condie, Mark L (3x)

8.e3 — 8.4% (91 parties)

Ambassadeurs : Keller-Hermann, Edith (2x), Eken, Max (2x), Malek, Daniel (2x), Krebs, Hans (1x), Batik, Frantisek (1x), Nedeljkovic, Srecko M (1x), Preinfalk, Anton (1x), Oestreich, Reinhard (1x)

8.b4 — 7.5% (81 parties)

Ambassadeurs : Miguel, Nahuel (3x), Rapaka Samuel Paul (3x), Martins, Kurt (2x), Olivera, Alfredo (1x), Nassimbwa Rosette (1x), Oestreich, Reinhard (1x), Groenegress, Wilfried (1x), Bronstein, David I (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	41	61%	24%	7%	5%
1800-2200	307	58%	19%	11%	10%
2200-2600	478	68%	21%	6%	5%
2600+	19	84%	11%	5%	—

Évolution par décennie (% des parties)

Décennie	N parties	8.Bg5	8.Bf4	8.e3	8.b4
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	60	47%	17%	25%	10%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
8.Bg5	67%	47%	▼ -20.5%
8.Bf4	15%	17%	▲ +1.5%
8.e3	6%	25%	▲ +18.9%
8.b4	9%	10%	▲ +0.6%

Joueurs célèbres

Champions du monde dans cette position

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

Parties historiques

8.Bg5 — 64.9% (705 parties)

1950 — Bosch van Rosenthal, Edzard 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
1971 — Mulder van Leens Dijkstra, Kornelis vs Jongman, Riekent W Prof — 1-0 — corr NBC
1973 — Pylkkanen, Juhani vs Oksa Pertti — 0-1 — ?

8.Bf4 — 18.5% (201 parties)

1952 — Eken, 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 — 8.4% (91 parties)

1951 — Eken, Max vs Jonsson, Eric — 1/2-1/2 — Goteborg SWE
1951 — Eken, Max vs Unzicker, Ferdinand, Dr. — 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
1952 — Monciunskas, P vs Zalys, Ignas — 1/2-1/2 — cr match

8.b4 — 7.5% (81 parties)

1952 — Miguel, Nahuel vs Rapaka Samuel Paul — 0-1 — Mexico/N.York/Salvador
1952 — Miguel, Nahuel vs Rapaka Samuel Paul — 0-1 — New York, NY USA
1952 — Miguel, Nahuel vs Rapaka Samuel Paul — 1/2-1/2 — Mexico/N.York/Salvador
1954 — Bronstein, David I vs Decker, Arnold Sheldon — 1-0 — New York, NY USA
1954 — Ritson-Morry, William vs Schlaugat, Michael — 0-1 — corr Dyckhoff mem

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