E56i — Nimzo-Indian: Main Line, 7…Nc6 8.a3 dxc4 9.Bxc4

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O Nc6 8.a3 dxc4 9.Bxc4 * ● Trait aux Noirs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plan principal. Exploiter la case forte b5….

Atouts. Les Blancs s'appuient sur une majorité de pions à l'centre (2 contre 1), les cases fortes b5 et e5, un fou actif en c4, la paire de fous et la colonne semi-ouverte c.

Côté adverse. Le fou enfermé en c8.

En contrepartie. Plusieurs pièces dorment encore (le fou c1 et la tour a1).

Plans. Bd2 (Développer Bc1) ; h3 (Empêcher ...Bg4).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plan principal. Exploiter la case forte d5.

Atouts. Les Noirs s'appuient sur une majorité de pions à l'aile_dame (3 contre 2), la case forte d5, un avant-poste en d5, la paire de fous et la colonne semi-ouverte d.

Côté adverse. Le fou enfermé en c1.

En contrepartie. Plusieurs pièces dorment encore (le fou c8 et la tour a8).

Plans. ...Bd7 (PRIORITÉ: libérer le Bc8 (...Bd7, b6+Bb7, ...Bg4, ...Bf5)) ; ...Na5 (Attaquer Bc4) ; ...e5 (Rupture).

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● b2→a3, f2→e3, e3→d4	● f7→e6
Passés	—	—
Majorité	● centre 2v1	● aile_dame 3v2

Cases

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

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● c	● d

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 1)
Bc4	● Bc4 Actif (mob. 8)
Bb4		● Bb4 Ok (mob. 3)
Bc8		● Bc8 Non développé (mob. 1)
Paire de fous	● Oui	● Oui
Non développées	2 (● c1, ● a1)	2 (● c8, ● a8)

Sécurité du roi

	♔ Blancs	♚ Noirs
Statut	● Roqué	● Roqué
Droits de roque	—	—

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	semi-ouvert
Ruptures	● d4-d5, ● e3-e4	● …e6-e5

Partie
1937 Kemeri – Round 1 – Landau, Salo – 0-1 – Steiner, Endre – G49 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 dxc4 7. Bxc4 c5 8. O-O Nc6 9. a3 Ba5 10. Qd3 a6
1939 New York ch-ACF – Round 1 – Reshevsky, Samuel – 1/2-1/2 – Fine, Reuben – G3 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 d5 5. Nf3 c5 6. Bd3 O-O 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Ne2 cxd4
1940 Buenos Aires – Round 1 – Alhuay Grau, Dominick Fabricio – 0-1 – Luckis, Marcos – G8 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 d5 6. Nf3 Nc6 7. O-O dxc4 8. Bxc4 O-O 9. a3 Ba5 10. Ne2 cxd4
1951 YUG Ch 7th – Round 16 – Nikolac, Juraj – 1-0 – Karaklajic, Nikola – G133 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 c5 6. Nf3 d5 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Qd3 a6
1951 YUG Ch 7th – Round 7 – Germek, Milan – 1/2-1/2 – Karaklajic, Nikola – G53 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 c5 6. Nf3 d5 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Na4 cxd4
1953 URS-training – Round 6 – Boleslavsky, Isaac – 1/2-1/2 – Smyslov, Vasily – G20 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 O-O 6. Nf3 d5 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Qd3 a6
1954 Belgrade – Round 8 – Rabar, Braslav – 1/2-1/2 – Ivkov, Borislav – G73 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 d5 6. Nf3 O-O 7. O-O Nc6 8. a3 dxc4 9. Bxc4 Ba5 10. Qd3 a6
1954 Bucharest – Round 4 – Furman, Slavomir – 1-0 – Troianescu, Octav – G44 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 O-O 6. Nf3 d5 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Qd3 a6
1955 Gothenburg Interzonal – Round 14 – Ilivitsky, Georgy A – 1/2-1/2 – Bisguier, Arthur B – G128 1. c4 Nf6 2. Nc3 e6 3. d4 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. dxc5 Bxc3
1955 Gothenburg Interzonal – Round 21 – Pilnik, Herman – 1/2-1/2 – Bisguier, Arthur B – G199 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Bd3 cxd4
1955 Ljubljana – Round 9 – Stahlberg, Gideon – 1-0 – Karaklajic, Nikola – G73 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 c5 6. Nf3 d5 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Ne2 cxd4
1955 Mar del Plata – Round 2 – Wexler, Bernardo – 0-1 – Gligorić, Svetozar – G12 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Qd3 a6
1955 Novi Sad – Round 12 – Udovcic, Mijo – 1/2-1/2 – Karaklajic, Nikola – G93 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Nf3 c5 6. Be2 d5 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Qd3 a6
1955 Novi Sad – Round 17 – Gligorić, Svetozar – 1/2-1/2 – Karaklajic, Nikola – G122 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 c5 6. Nf3 d5 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Qd3 a6
1955 Zagreb – Round 2 – Gligorić, Svetozar – 1-0 – Karaklajic, Nikola – G35 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Bd3 h6
1956 Budapest Szikra – Round ? – Barcza, Gedeon – 1-0 – Dely, Peter – G16 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. dxc5 Bxc3
1960 Buenos Aires ch-ARG – Round 6 – Aguayo Cruz, Ramon Uriel – 0-1 – Schweber – G37 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 O-O 6. Nf3 d5 7. O-O Nc6 8. a3 dxc4 9. Bxc4 Ba5 10. Ne2 cxd4
1961 Buenos Aires ch-ARG – Round 4 – Aguayo Cruz, Ramon Uriel – 1/2-1/2 – Obregoso – G25 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 dxc4 7. Bxc4 c5 8. O-O Nc6 9. a3 Ba5 10. Qd3 e5
1961 Maroczy Memorial Budapest HUN – Round 1 – Kluger, Gyula – 1/2-1/2 – Bisguier, Arthur B – G20 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Nf3 O-O 6. Bd3 d5 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Qd3 Qe7
1962 Stockholm Interzonal – Round 20 – Bolbochan, J. – 1/2-1/2 – Bisguier, Arthur B – G176 1. c4 Nf6 2. Nc3 e6 3. d4 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Bd3 cxd4
1964 Holstebro ch-DEN – Round 1 – Kolvig, Bent – 1/2-1/2 – Larsen, Benjamin Holsko – G3 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 d5 6. Nf3 O-O 7. O-O Nc6 8. a3 dxc4 9. Bxc4 Ba5 10. Bd3 cxd4
1965 Capablanca Memorial – Round 16 – Lehmann, Heinz – 0-1 – Ivkov, Borislav – G158 1. d4 e6 2. c4 Nf6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 c5 6. Nf3 d5 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Qd3 Qe7
1965 HUN-ch21 – Round 1 – Portisch, Ferenc – 1/2-1/2 – Dely, Peter – G29 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 c5 6. Nf3 d5 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Ne5 Qc7
1966 Hungary – Round 7 – Gasztonyi, Endre – 1-0 – Dely, Peter – G48 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Nf3 c5 6. Bd3 d5 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Ne2 Bb6
1967 Capablanca Memorial – Round 6 – Taimanov, Mark E – 0-1 – Larsen, Benjamin Holsko – G51 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 c5 6. Nf3 d5 7. O-O Nc6 8. a3 dxc4 9. Bxc4 Ba5 10. Qd3 a6
1967 Dundee – Round 8 – Gligorić, Svetozar – 1-0 – Larsen, Bent Ravn – G15 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 O-O 6. Nf3 d5 7. O-O Nc6 8. a3 dxc4 9. Bxc4 Ba5 10. Qd3 a6
1967 Dundee Centenary – Round 1 – Gligoric, Svetozar – 1/2-1/2 – O'Kelly de Galway, Alberic – G1 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 Nc6 6. Nf3 d5 7. O-O O-O 8. a3 dxc4 9. Bxc4 Ba5 10. Qd3 a6
1967 Oxford ch-BCF – Round 2 – Haygarth, Michael J – 1/2-1/2 – Golombek, Harry – G24 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 d5 6. Nf3 Nc6 7. O-O O-O 8. a3 dxc4 9. Bxc4 Ba5 10. Ne2 cxd4
1967 Skopje – Round 16 – Damjanovic, Marko – 1/2-1/2 – Dely, Peter – G123 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nc3 c5 5. e3 O-O 6. Bd3 d5 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Ne5 Qc7
1967 Sochi – Round 4 – Bogdanovic, Rajko – 1/2-1/2 – Damjanovic, Marko – G39 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 O-O 5. e3 d5 6. Bd3 c5 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Ne5 Qc7
1967 Sousse Interzonal – Round 21 – Gligoric, Sofija – 1/2-1/2 – Larsen, Benjamin Holsko – G194 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 O-O 6. Nf3 d5 7. O-O Nc6 8. a3 dxc4 9. Bxc4 Ba5 10. Qd3 a6
1968 Bucharest – Round 1 – Gheorghiu, Florin – 1-0 – Wade, Robert G – G3 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O Nc6 8. a3 dxc4 9. Bxc4 Ba5 10. Qd3 a6
1968 Candidats qf3 – Round 1 – Portisch, Lajos – 1/2-1/2 – Larsen, Benjamin Holsko – G1 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 c5 6. Nf3 d5 7. O-O Nc6 8. a3 dxc4 9. Bxc4 Ba5 10. Qd3 a6
1968 Candidats qf3 – Round 3 – Portisch, Lajos – 0-1 – Larsen, Benjamin Holsko – G3 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Qd3 a6
1968 Candidats qf3 – Round 7 – Portisch, Lajos – 1-0 – Larsen, Benjamin Holsko – G7 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 dxc4 7. Bxc4 c5 8. O-O Nc6 9. a3 Ba5 10. Qd3 a6
1968 Hoogovens – Round 13 – Portisch, Lajos – 1-0 – Karaklajic, Nikola – G113 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 d5 6. Nf3 dxc4 7. Bxc4 O-O 8. O-O Nc6 9. a3 Ba5 10. Qd3 h6
1968 Hungary – Round 1 – Farago, Ivan – 1/2-1/2 – Haag, Ervin – G49 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 d5 6. Nf3 O-O 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Qd3 a6
1968 IBM I – Round 12 – Donner, H. – 1/2-1/2 – Lengyel, Laszlo – G42 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 O-O 6. Nf3 d5 7. O-O Nc6 8. a3 dxc4 9. Bxc4 Ba5 10. Bd3 cxd4
1968 Lugano ol (Men) qual-F – Round 1 – Ojanen, Kaarle S – 1-0 – Johansson, Martin 1979 – G3 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Nf3 d5 6. Bd3 O-O 7. O-O Nc6 8. a3 dxc4 9. Bxc4 Ba5 10. Bd3 h6
1968 Lugano olm - Round 1 - Jimenez Zerquera, Eleazar - 0-1 - Johannsson, Ingi R - G95 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 O-O 6. Nf3 d5 7. O-O Nc6 8. a3 dxc4 9. Bxc4 Ba5 10. Qd3 a6
1968 Lugano olm - Round 1 - Toran Albero, Roman - 1/2-1/2 - Bouwmeester, Hans - G97 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O Nc6 8. a3 dxc4 9. Bxc4 Ba5 10. Bd3 cxd4
1968 Lugano olm - Round 1 - Visier Segovia, Fernando - 1/2-1/2 - Kristinsson, Jon - G93 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 O-O 6. Nf3 d5 7. O-O Nc6 8. a3 dxc4 9. Bxc4 Ba5 10. Ne2 Bb6
1968 Lugano SUI – Round 2 – Sanguineti, Raúl Carlos – 1/2-1/2 – Johansson, Martin 1979 – G62 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Nf3 O-O 6. Bd3 d5 7. O-O Nc6 8. a3 dxc4 9. Bxc4 Ba5 10. Ba2 Bb6
1968 Skopje/Ohrid – Round 6 – Gligorić, Svetozar – 1-0 – Ilievski, Borce – G47 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O Nc6 8. a3 dxc4 9. Bxc4 Ba5 10. Qd3 a6
1968 Skopje/Ohrid – Round 8 – Gligorić, Svetozar – 1/2-1/2 – Gheorghiu, Florin – G64 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 c5 6. Nf3 d5 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Qd3 a6
1968 Solingen – Round 10 – Donner, Jan-Hein – 1/2-1/2 – O'Kelly de Galway, Alberic – G41 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 O-O 6. Nf3 d5 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Bd3 Qe7
1968 Solingen – Round 14 – Donner, Jan-Hein – 1-0 – Wade, Robert G – G61 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 d5 6. Nf3 O-O 7. O-O Nc6 8. a3 dxc4 9. Bxc4 Ba5 10. Bd3 Bd7
1968 Solingen GER – Round 7 – Lehmann, Heinz – 1-0 – Wade, Robert G – G13 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 c5 5. e3 d5 6. Be2 O-O 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Qd3 a6
1968 USA Open Aspen – Round 1 – Sherwin, James T – 1-0 – Wood, Nick – G3 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 c5 5. e3 O-O 6. Bd3 d5 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Qd3 cxd4
1968 Vinkovci – Round 9 – Ivkov, Borislav – 1-0 – Wade, Robert G – G51 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 c5 5. e3 O-O 6. Bd3 d5 7. O-O Nc6 8. a3 dxc4 9. Bxc4 Ba5 10. Qd3 a6
1969 Amsterdam AMRO Open – Round ? – Lenstra, Wiebe – 0-1 – Langeweg, Kick – G10 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Nf3 O-O 6. Bd3 d5 7. O-O Nc6 8. a3 dxc4 9. Bxc4 Ba5 10. Qd3 a6
1969 Capablanca Memorial – Round 12 – Pomar Salamanca, Arturo – 0-1 – Parma, Bruno – G87 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Nf3 O-O 6. Bd3 d5 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Bd3 cxd4
1969 Capablanca Memorial – Round 8 – Panno, Oscar – 1/2-1/2 – Parma, Bruno – G59 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 O-O 6. Nf3 d5 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Qd3 a6
1969 Hoogovens – Round 15 – Portisch, Lajos – 1/2-1/2 – Benko, Pal – G125 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 c5 6. Nf3 d5 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Qd3 a6
1969 Hoogovens – Round 2 – Portisch, Lajos – 0-1 – Olafsson, Fridrik – G19 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 O-O 6. Nf3 d5 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Qd3 a6
1969 Hungary – Round 1 – Portisch, Lajos – 1-0 – Haag, Ervin – G11 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 d5 6. Nf3 O-O 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Qd3 a6
1969 IBM – Round 10 – Portisch, Lajos – 1-0 – Langeweg, Kick – G38 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 O-O 6. Nf3 d5 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Bd3 Qe7
1969 Ljubljana – Round ? – Gligorić, Svetozar – 1/2-1/2 – Unzicker, Wolfgang – G23 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Qd3 a6
1969 Moskou ch-URS – Round 1 – Taimanov, Mark E – 1/2-1/2 – Polugaevsky, Lev – G44 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Nf3 O-O 6. Bd3 d5 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Bd3 cxd4
1969 Netanya – Round 2 – Reshevsky, Samuel – 1-0 – Damjanovic, Marko – G17 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 d5 6. Nf3 O-O 7. O-O Nc6 8. a3 dxc4 9. Bxc4 Ba5 10. Qd3 a6
1969 New York ch-USA – Round 1 – Reshevsky, Samuel – 1-0 – Burger, Kim – G3 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 c5 6. Nf3 d5 7. O-O Nc6 8. a3 dxc4 9. Bxc4 Ba5 10. Bd3 Qe7
1969 Olot – Round 9 – Pomar Salamanca, Arturo – 1/2-1/2 – O'Kelly, Albéric de Galway – G30 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 O-O 6. Nf3 d5 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Qd3 a6
1969 Palma de Mallorca – Round 1 – Korchnoi, Viktor – 1/2-1/2 – Najdorf, Miguel – G4 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Nf3 O-O 6. Bd3 d5 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Qd3 a6
1969 Villa Gesell tt – Round 1 – Luckis, Marcos – 0-1 – Garcia Rodriguez, Raimundo – G3 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Qd3 a6
1970 IBM – Round 6 – Gligoric, Svetozar – 0-1 – Polugaevsky, Lev – G55 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 c5 6. Nf3 d5 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Na4 cxd4
1970 Palma de Mallorca Interzonal – Round 17 – Gligoric, Svetozar – 1/2-1/2 – Polugaevsky, Lev – G94 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 c5 6. Nf3 d5 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Bd3 cxd4
1970 Palma de Mallorca Interzonal – Round 17 – Taimanov, Mark – 0-1 – Mecking, Henrique – G92 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 O-O 6. Nf3 d5 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Bd3 cxd4
1970 Palma de Mallorca Interzonal – Round 5 – Portisch, Lajos – 0-1 – Polugaevsky, Lev – G103 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 c5 6. Nf3 d5 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Qd3 a6
1970 Vinkovci – Round 1 – Taimanov, Mark – 1-0 – Parma, Bruno – G37 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Nf3 d5 6. Be2 6. ... O-O 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Bd3 cxd4
1970 Vinkovci – Round 3 – Taimanov, Mark – 1-0 – Parma, Bruno – G36 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Nf3 O-O 6. Bd3 d5 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Bd3 cxd4
1971 Hoogovens – Round 12 – Gligoric, Svetozar – 1/2-1/2 – Langeweg, Kick – G72 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 c5 6. Nf3 d5 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Bd3 cxd4
1971 Moscow – Round 13 – Byrne, Robert – 1/2-1/2 – Parma, Bruno – G74 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 O-O 6. Nf3 d5 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Bd3 cxd4
1971 Moscow – Round 6 – Tukmakov, Vladimir B – 1/2-1/2 – Gheorghiu, Florin – G75 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Nf3 O-O 6. Bd3 d5 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Bd3 cxd4
1972 Skopje ol (Men) fin-A – Round 7 – Bisguier, Arthur Bernard – 1/2-1/2 – Medina-Garcia, Antonio – G91 1. c4 Nf6 2. Nc3 e6 3. Nf3 d5 4. d4 Bb4 5. e3 c5 6. Bd3 O-O 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Bd3 cxd4
41. Olympiad Open 2014 – Round 6.4 – Kotsur, Pavel – 0-1 – Bruzon Batista, Lazaro – G441 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Bd3 h6
FIDE Grand Swiss 2025 – Round 5 – Theodorou Nikolas – 1/2-1/2 – Nepomniachtchi Ian – G243 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 d5 6. Nf3 dxc4 7. Bxc4 O-O 8. O-O Nc6 9. a3 Ba5 10. Bd3 h6
FIDE World Cup 2025 – Round R3 Rapid 1 – Vachier-Lagrave Maxime – 1/2-1/2 – Vladislav Artemiev – G502 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. Nc3 Nf6 5. d3 a6 6. a4 d6 7. O-O O-O 8. Bg5 h6 9. Bh4 Nd4 10. Nxd4 Bxd4
FIDE World Rapid Championship 2025 – Round 13 – Samuel Sevian – 1-0 – Nepomniachtchi Ian – G247 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. dxc5 Bxc3
Madrid 1973 – Round 15 – Portisch, Lajos – 1/2-1/2 – Furman, Slavomir – G28 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Qd3 a6
Moskou ch-URS 1973 – Round 1 – Korchnoi, Viktor – 1/2-1/2 – Polugaevsky, Lev – G20 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 c5 6. Nf3 d5 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Qd3 a6
Moskou ch-URS 1973 – Round 1 – Taimanov, Mark E – 1/2-1/2 – Karpov, Anatoly – G17 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Nf3 O-O 6. Bd3 d5 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Ba2 a6
Superbet Chess Classic Romania 2025 – Round 3 – So Wesley – 1/2-1/2 – Duda Jan-Krzysztof – G14 1. c4 Nf6 2. Nc3 e6 3. d4 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 dxc4 7. Bxc4 c5 8. O-O Nc6 9. a3 Ba5 10. Bd3 h6
World Blitz 2016 – Round 3.34 – Firouzja, Alireza – 1/2-1/2 – Nguyen, Ngoc Truong Son – G122 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 c5 6. Nf3 d5 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Ne2 cxd4
World Blitz 2023 – Round 19.18 – Saini Vidit – 0-1 – Daneshvar, Bardiya – G1072 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 dxc4 7. Bxc4 c5 8. O-O Nc6 9. a3 Ba5 10. h3 a6

E56i — Main Line

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O Nc6 8.a3 dxc4 9.Bxc4

Les coups candidats

9…Ba5 — 62.5% (657 parties)

Ambassadeurs : Portisch, Lajos (18x), Lechtynsky, Jiri (17x), Wade, Robert G (15x), Reshevsky, Samuel (12x), Gligorić, Svetozar (11x), Polugaevsky, Lev (11x), Parma, Bruno (10x), Taimanov, Mark (8x)

9…Bxc3 — 29.4% (309 parties)

Ambassadeurs : Kostro, Jerzy (5x), Reshevsky, Samuel (4x), Kolarov, Atanas S. (4x), Kholmov, Ratmir D (4x), Tiviakov, Sergei (4x), Burkett, Max (4x), Najdorf, Miguel (3x), Potkin, Vladimir (3x)

9…cxd4 — 8.0% (84 parties) →

Ambassadeurs : Najdorf, Miguel (3x), Reshevsky, Samuel (2x), Hudec, Jan (2x), Ragozin, Viacheslav (1x), Bastrikov, Georgy (1x), Goldberg, Grigory A (1x), Sidorov, Anatoly (1x), Goldenberg, Richard (1x)

9…Qxd4 — 0.1% (1 parties)

Ambassadeurs : Rodriguez Cespedes, Amador (1x), Nogueiras Santiago, Jesus (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	9…Ba5	9…Bxc3	9…cxd4	9…Qxd4
<1800	14	57%	21%	21%	—
1800-2200	183	48%	38%	14%	—
2200-2600	488	65%	31%	4%	0%
2600+	55	78%	18%	4%	—

Évolution par décennie (% des parties)

Décennie	N parties	9…Ba5	9…Bxc3	9…cxd4	9…Qxd4
1930s	4	75%	—	25%	—
1940s	3	67%	33%	—	—
1950s	48	54%	31%	15%	—
1960s	114	67%	28%	5%	—
1970s	175	83%	14%	3%	—
1980s	50	58%	34%	8%	—
1990s	81	40%	44%	15%	1%
2000s	103	31%	46%	23%	—
2010s	273	55%	37%	8%	—
2020s	201	80%	18%	2%	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
9…Ba5	55%	80%	▲ +25.2%
9…Bxc3	37%	18%	▼ -19.1%
9…cxd4	8%	2%	▼ -5.7%
9…Qxd4	0%	0%	+0.0%

Joueurs célèbres

Champions du monde dans cette position

Karpov, Aleksandr — 5 parties
Ju, Wenjun — 3 parties
Botvinnik, Mikhail — 2 parties
Tal, Mikhail — 2 parties
Smyslov, Vladimir — 2 parties
Karpov, Anatoly — 1 partie

Parties historiques

9…Ba5 — 62.5% (657 parties)

1937 — Landau, Salo vs Steiner, Endre — 0-1 — Kemeri LAT
1938 — Landau, Salo vs Alexander, Conol Hugh — 1/2-1/2 — London, Gt Eastern Hotel
1939 — Reshevsky, Samuel vs Fine, Reuben — 1/2-1/2 — New York, NY USA
1940 — Alatortsev, Vladimir N. vs Levenfish, Grigory — 0-1 — Moscow RUS
1940 — Alhuay Grau, Dominick Fabricio vs Luckis, Marcos — 0-1 — Buenos Aires ARG

9…Bxc3 — 29.4% (309 parties)

1947 — Levenfish, Grigory vs Kan, Ilya A — 1/2-1/2 — Leningrad ch-URS
1953 — Najdorf, Miguel vs Reshevsky, Samuel — 1-0 — Match Buenos Aires
1953 — Reshevsky, Samuel vs Najdorf, Miguel — 1/2-1/2 — Buenos Aires ARG
1953 — Najdorf, Miguel vs Reshevsky, Samuel — 1-0 — Buenos Aires ARG
1953 — Steinberg Daniv, Eliyahu vs Shocron, Ruben — 1/2-1/2 — Bariloche

9…cxd4 — 8.0% (84 parties)

1938 — Ragozin, Viacheslav vs Bastrikov, Georgy — 1-0 — Leningrad RUS
1952 — Rabar, Braslav vs De Souza Mendes, Joao — 1-0 — Vienna AUT
1952 — Najdorf, Miguel vs Reshevsky, Samuel — 1-0 — ?
1953 — Najdorf, Miguel vs Reshevsky, Samuel — 1-0 — Buenos Aires ARG
1954 — Goldberg, Grigory A vs Sidorov, Anatoly — 1-0 — Riga LAT

9…Qxd4 — 0.1% (1 parties)

1995 — Rodriguez Cespedes, Amador vs Nogueiras Santiago, Jesus — 1/2-1/2 — Capablanca mem