E54c — Nimzo-Indian: Main Line, Smyslov Variation

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O dxc4 8.Bxc4 Qe7 * ○ Trait aux Blancs

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), 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 cavalier b8, le fou c8 et la tour a8).

Plans. ...Bd7 (PRIORITÉ: libérer le Bc8 (...Bd7, b6+Bb7, ...Bg4, ...Bf5)) ; ...Nbd7 (Développer Nb8) ; ...e5 (Rupture).

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

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

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● b5 (2v0), ● e5 (2v0)	—
Cases faibles	—	—
Centre	● d4 (3v1), ● e5 (2v0)	—

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● c	● d

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 1)
Bc4	● Bc4 Actif (mob. 7)
Bb4		● Bb4 Ok (mob. 3)
Bc8		● Bc8 Non développé (mob. 1)
Paire de fous	● Oui	● Oui
Non développées	2 (● c1, ● a1)	3 (● b8, ● 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
1959 Candidats Tournament – Round 19 – Gligoric, Sofija – 0-1 – Smyslov, Vladimir – G71 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 Qe7 9. a3 Ba5 10. Qc2 Bd7
1959 HUN Ch Budapest HUN – Round 9 – Szily, Jozsef – 1-0 – Foldi, Jozsef – 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 Qe7 9. a3 Ba5 10. Qe2 Nc6
1959 New York ch-USA – Round 6 – Byrne, Ray – 1/2-1/2 – Reshevsky, Samuel – G30 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 Qe7 9. a3 Ba5 10. Qc2 Bd7
1960 UKR Ch – Round 6 – Rotstein, Jefim – 0-1 – Novopashin, Arkady – G33 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 Qe7 9. a3 Ba5 10. Qc2 Bd7
1960 URS Ch sf – Round 15 – Movshovich A – 1-0 – Uusi, Gunnar – G115 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 Qe7 9. a3 Ba5 10. Qe2 Bd7
1960 URS Ch sf – Round 5 – Peterson, Andrejs – 1/2-1/2 – Novopashin, Arkady – G33 1. c4 e6 2. d4 Nf6 3. Nc3 Bb4 4. e3 d5 5. Nf3 O-O 6. Bd3 c5 7. O-O dxc4 8. Bxc4 Qe7 9. Qe2 Rd8 10. a3 Ba5
1961 Soviet-ch28 – Round 14 – Geller, Efim P – 1-0 – Smyslov, Vladimir – G22 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 Qe7 9. a3 Ba5 10. Qc2 Bd7
1962 New York ch-USA – Round 1 – Steinmeyer, Robert – 1-0 – Evans Lianda – G2 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 Qe7 9. a3 Bxc3 10. bxc3 Nbd7
1963 Alekhine Memorial – Round 2 – Liberzon, Vladimir M – 0-1 – Smyslov, Vladimir – G11 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 Qe7 9. Qe2 Nc6 10. Rd1 Rd8
1963 Leningrad ch-URS – Round 1 – Taimanov, Mark E – 0-1 – Kholmov, Ratmir D – G39 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 Qe7 9. Qe2 Nc6 10. Bd2 Rd8
1964 Amsterdam Interzonal – Round 16 – Portisch, Lajos – 1-0 – Porath, Yosef – G157 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 Qe7 9. a3 Ba5 10. Qc2 Bd7
1964 Buenos Aires – Round 14 – Filip, Miroslav – 1/2-1/2 – Eliskases, Erich – G124 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 Qe7 9. a3 Ba5 10. Bd2 Rd8
1964 Capablanca Memorial – Round 4 – Taimanov, Mark E – 1/2-1/2 – Smyslov, Vladimir – G43 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 Qe7 9. Qc2 Bd7 10. a3 Ba5
1964 Capablanca Memorial – Round 9 – Portisch, Lajos – 1/2-1/2 – Smyslov, Vasily – G84 1. c4 Nf6 2. Nc3 e6 3. d4 Bb4 4. e3 O-O 5. Bd3 c5 6. Nf3 d5 7. O-O dxc4 8. Bxc4 Qe7 9. a3 Ba5 10. Qc2 Bd7
1964 Capablanca Memorial – Round 9 – Portisch, Lajos – 1/2-1/2 – Smyslov, Vladimir – G85 1. c4 Nf6 2. Nc3 e6 3. d4 Bb4 4. e3 O-O 5. Bd3 c5 6. Nf3 d5 7. O-O dxc4 8. Bxc4 Qe7 9. a3 Ba5 10. Qc2 Bd7
1964 Kiev ch-URS – Round 1 – Borisenko, Georgy K – 1/2-1/2 – Korchnoi, Viktor – G38 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 Qe7 9. a3 Ba5 10. Qe2 Bd7
1965 Aalborg – Round 1 – Holm, Sejer – 1-0 – Kolbak, Jens – G19 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 Qe7 9. Qc2 Nc6 10. a3 Ba5
1965 Capablanca Memorial – Round 20 – Geller, Efim P – 1/2-1/2 – Smyslov, Vladimir – G199 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 Qe7 9. a3 Ba5 10. Bd2 Nc6
1965 Novi Sad – Round 11 – Gligorić, Svetozar – 1/2-1/2 – Puc, Stojan – G90 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 Qe7 9. a3 Ba5 10. Bd3 Nc6
1966 La Habana ol – Round ? – Kraidman, Yair – 1-0 – Bouteville, Guy – G5 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 Qe7 9. Qe2 Nc6 10. Rd1 Rd8
1966 La Habana olm fin-B – Round 6 – Kraidman, Yair – 1-0 – Boutteville, Cesar – G85 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 Qe7 9. Qe2 Nc6 10. Rd1 Rd8
1966 Malaga Malaga ESP – Round 3 – Toran Albero, Roman – 1-0 – Medina-Garcia, Antonio – G2 1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. Nc3 Bb4 5. e3 O-O 6. Bd3 c5 7. O-O dxc4 8. Bxc4 Qe7 9. Qe2 a6 10. a3 Ba5
1966 Panamerican – Round ? – Schweber, Samuel – 1/2-1/2 – Cobo Arteaga, Eldis – G56 1. c4 Nf6 2. Nc3 e6 3. d4 Bb4 4. e3 O-O 5. Bd3 c5 6. Nf3 d5 7. O-O dxc4 8. Bxc4 Qe7 9. Qe2 Bd7 10. Rd1 Bc6
1966 Panamerican – Round ? – Yepez, Olavo – 1-0 – Cobo Arteaga, Eldis – G58 1. c4 Nf6 2. Nc3 e6 3. d4 Bb4 4. e3 c5 5. Bd3 O-O 6. Nf3 d5 7. O-O dxc4 8. Bxc4 Qe7 9. Qe2 Nc6 10. Rd1 Rd8
1967 Asztalos Memorial 10th – Round 3 – Damjanovic, Mato – 1-0 – Cobo Arteaga, Eldis – G11 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 Qe7 9. a3 Ba5 10. Qe2 Nc6
1967 Capablanca Memorial – Round 14 – Taimanov, Mark E – 1/2-1/2 – Smyslov, Vladimir – G119 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 Qe7 9. a3 Ba5 10. Qc2 Bd7
1967 Clare Benedict Cup 14th – Round 5.1 – Donner, Jan-Hein – 1/2-1/2 – Unzicker, Wolfgang – G25 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 Qe7 9. a3 Ba5 10. Qe2 Nc6
1967 Copenhagen – Round 1 – Hamann, Svend – 0-1 – Unzicker, Wolfgang – G7 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 Qe7 9. a3 Ba5 10. Qe2 Nc6
1967 DSV-Turnier – Round 5 – Kozma, Julius – 0-1 – Fuchs, Reinhart – 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 Qe7 9. a3 Ba5 10. Qc2 Bd7
1967 Dundee – Round 3 – Olafsson, Fridrik – 1-0 – O'Kelly, Albéric de Galway – G6 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 Qe7 9. Bd3 Nc6 10. Ne4 cxd4
1967 Moscow – Round ? – Portisch, Lajos – 0-1 – Smyslov, Vasily – G154 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 Qe7 9. a3 Ba5 10. Qc2 Bd7
1967 Moscow – Round 1 – Gligoric, Sofija – 1/2-1/2 – Smyslov, Vladimir – 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 Qe7 9. a3 Ba5 10. Bd3 Nbd7
1967 Moscow RUS – Round 1 – Portisch, Lajos – 0-1 – Smyslov, Vladimir – 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 Qe7 9. a3 Ba5 10. Qc2 Bd7
1967 Moscow RUS – Round 15 – Gligorić, Svetozar – 1/2-1/2 – Gheorghiu, Florin – G28 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 Qe7 9. a3 Ba5 10. Qc2 Bd7
1967 Palma de Mallorca – Round 15 – Jimenez Zerquera, Eleazar – 1/2-1/2 – Medina-Garcia, Antonio – G107 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 Qe7 9. Bd2 Bd7 10. a3 Ba5
1967 Rubinstein Memorial – Round 11 – Furman, Slavomir – 1-0 – Schmidt, Waldemar – G41 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 Qe7 9. a3 Ba5 10. Qc2 Bd7
1968 Bamberg – Round 4 – Toran Albero, Roman – 0-1 – Unzicker, Wolfgang – G36 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 Qe7 9. Qe2 Nc6 10. Rd1 Rd8
1968 CSR Ch – Round 5 – Jansa, Vlastimil – 1-0 – Janata, Michael – G42 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 Qe7 9. Qe2 Rd8 10. Bd2 cxd4
1968 IBM – Round 3 – Donner, Jan-Hein – 1-0 – Bouwmeester, Hans – 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 Qe7 9. a3 Ba5 10. Bd3 Bd7
1968 IBM I – Round 9 – Donner, Jan-Hein – 1/2-1/2 – Langeweg, Kick – G31 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 Qe7 9. a3 Ba5 10. Bd3 Nbd7
1968 Lugano olm - Round 1 - Najdorf, Miguel - 1/2-1/2 - Unzicker, Wolfgang - G98 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 Qe7 9. a3 Ba5 10. Bd2 Nc6
1968 Lugano SUI – Round 11 – Gligorić, Svetozar – 1/2-1/2 – Reshevsky, Samuel – G102 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 Qe7 9. a3 Ba5 10. Qc2 Bd7
1968 Mar del Plata ch-ARG – Round 10 – Najdorf, Miguel – 1/2-1/2 – Sanguineti, Raúl Carlos – G64 1. d4 e6 2. c4 Nf6 3. Nc3 Bb4 4. e3 c5 5. Bd3 O-O 6. Nf3 d5 7. O-O dxc4 8. Bxc4 Qe7 9. a3 Ba5 10. Qe2 Nc6
1968 Reykjavik – Round 1 – Addison, Wiliam G – 1-0 – Sigurjonsson, Gudmundur – G24 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 Qe7 9. a3 Ba5 10. Bd3 a6
1968 Skopje/Ohrid – Round 14 – Portisch, Lajos – 1-0 – Gheorghiu, Florin – G113 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 Qe7 9. a3 Ba5 10. Qc2 Bd7
1968 Skopje/Ohrid – Round 15 – Savon, Vladimir – 1/2-1/2 – Polugaevsky, Lev – 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 Qe7 9. Qe2 Bd7 10. Rd1 Bc6
1968 Sombor – Round 1 – Barczay, Laszlo – 0-1 – Ivkov, Borislav – G2 1. c4 Nf6 2. Nc3 e6 3. d4 Bb4 4. Nf3 c5 5. e3 O-O 6. Bd3 d5 7. O-O dxc4 8. Bxc4 Qe7 9. Bd2 Rd8 10. Qe2 cxd4
1968 Yugoslavia – Round 1 – Gligorić, Svetozar – 1/2-1/2 – Ivkov, Borislav – G6 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 Qe7 9. a3 Ba5 10. Qc2 Rd8
1969 Capablanca Memorial – Round 11 – Gligorić, Svetozar – 1-0 – O'Kelly, Albéric de Galway – G81 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 Qe7 9. a3 Ba5 10. Qd3 Rd8
1969 Capablanca Memorial – Round 3 – Pomar Salamanca, Arturo – 1/2-1/2 – O'Kelly, Albéric de Galway – G22 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 Qe7 9. a3 Ba5 10. Bd3 Nbd7
1969 Hungary – Round 1 – Polugaevsky, Lev – 1-0 – Portisch, Lajos – G3 1. c4 Nf6 2. Nc3 e6 3. d4 Bb4 4. Nf3 c5 5. e3 O-O 6. Bd3 d5 7. O-O dxc4 8. Bxc4 Qe7 9. a3 Ba5 10. Qe2 Rd8
1969 IBM – Round 2 – Darga, Klaus – 1/2-1/2 – Ivkov, Borislav – G8 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 Qe7 9. Qe2 Nc6 10. Bd2 cxd4
1969 Olot – Round 4 – Pomar Salamanca, Arturo – 1/2-1/2 – Ivkov, Borislav – G19 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 Qe7 9. a3 Ba5 10. Qe2 Nc6
1969 YUG Ch 24th – Round 6 – Cvetkovic, Srdjan – 1/2-1/2 – Bukic, Enver – G18 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 Qe7 9. Qc2 Bd7 10. Ne4 Nxe4
1970 Palma de Mallorca Interzonal – Round 12 – Mecking, Henrique – 1/2-1/2 – Panno, Oscar – G88 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 Qe7 9. a3 Ba5 10. Qd3 Nbd7

E54c — Main Line Smyslov Variation

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O dxc4 8.Bxc4 Qe7

Eval: [+0.30]

Les coups candidats

9.a3 — 71.1% (170 parties)

Ambassadeurs : Portisch, Lajos (7x), Smyslov, Vladimir (7x), Gligorić, Svetozar (6x), Unzicker, Wolfgang (4x), Borisenko, Georgy K (3x), Novopashin, Arkady (3x), Donner, Jan-Hein (3x), Ivkov, Borislav (3x)

9.Qe2 — 18.8% (45 parties)

Ambassadeurs : Cobo Arteaga, Eldis (2x), Toran Albero, Roman (2x), Kraidman, Yair (2x), Baklan, Vladimir (2x), Peterson, Andrejs (1x), Novopashin, Arkady (1x), Schweber, Samuel (1x), Yepez, Olavo (1x)

9.Qc2 — 3.8% (9 parties)

Ambassadeurs : Bukic, Enver (2x), Holm, Sejer (1x), Kolbak, Jens (1x), Cvetkovic, Srdjan (1x), Djordjevic Velimir (1x), Marek, Ivan (1x), Kausek (1x), Weiner, Alex (1x)

9.Bd2 — 2.1% (5 parties)

Ambassadeurs : Barczay, Laszlo (1x), Ivkov, Borislav (1x), Ree, Hans (1x), Timman, Jan H (1x), Jimenez Zerquera, Eleazar (1x), Medina-Garcia, Antonio (1x), Prokopchuk, Evgeny (1x), Lugovoi, Aleksei (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	9.a3	9.Qe2	9.Qc2	9.Bd2
<1800	1	100%	—	—	—
1800-2200	32	75%	19%	3%	3%
2200-2600	81	70%	20%	2%	2%
2600+	3	33%	67%	—	—

Évolution par décennie (% des parties)

Décennie	N parties	9.a3	9.Qe2	9.Qc2	9.Bd2
1950s	3	100%	—	—	—
1960s	74	59%	23%	8%	4%
1970s	45	82%	7%	4%	—
1980s	27	81%	15%	4%	—
1990s	24	75%	17%	—	4%
2000s	37	73%	22%	—	—
2010s	28	64%	32%	—	4%
2020s	1	100%	—	—	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
9.a3	64%	100%	▲ +35.7%
9.Qe2	32%	0%	▼ -32.1%
9.Qc2	0%	0%	+0.0%
9.Bd2	4%	0%	▼ -3.6%

Joueurs célèbres

Champions du monde dans cette position

Smyslov, Vladimir — 10 parties

Parties historiques

9.a3 — 71.1% (170 parties)

1959 — Byrne, Ray vs Reshevsky, Samuel — 1/2-1/2 — New York, NY USA
1959 — Szily, Jozsef vs Foldi, Jozsef — 1-0 — HUN-ch Budapest HUN
1959 — Gligoric, Sofija vs Smyslov, Vladimir — 0-1 — Bled/Zagreb/Belgrade
1960 — Borisenko, Georgy K vs Novopashin, Arkady — 1/2-1/2 — Kiev UKR
1960 — Rotstein, Jefim vs Novopashin, Arkady — 0-1 — ?

9.Qe2 — 18.8% (45 parties)

1960 — Peterson, Andrejs vs Novopashin, Arkady — 1/2-1/2 — Vilnius LTU
1961 — Thomson, Derec vs Larusson, Gudmundur — 0-1 — The Hague NED
1963 — Liberzon, Vladimir M vs Smyslov, Vladimir — 0-1 — Moscow RUS
1963 — Taimanov, Mark vs Kholmov, Ratmir D — 0-1 — Leningrad ch-URS
1966 — Schweber, Samuel vs Cobo Arteaga, Eldis — 1/2-1/2 — Havana CUB

9.Qc2 — 3.8% (9 parties)

1964 — Taimanov, Mark vs Smyslov, Vladimir — 1/2-1/2 — Havana CUB
1965 — Holm, Sejer vs Kolbak, Jens — 1-0 — Aalborg DEN
1965 — Bagnara Letelier, Joaquin vs Smyslov, Dmitri — 1/2-1/2 — Santiago de Chile
1968 — Kausek vs Weiner, Alex — 1/2-1/2 — corr ch CZE
1969 — Cvetkovic, Srdjan vs Bukic, Enver — 1/2-1/2 — Novi Travnik

9.Bd2 — 2.1% (5 parties)

1967 — Jimenez Zerquera, Eleazar vs Medina-Garcia, Antonio — 1/2-1/2 — Palma de Majorca ESP
1968 — Barczay, Laszlo vs Ivkov, Borislav — 0-1 — Sombor
1968 — Ree, Hans vs Timman, Jan H — 0-1 — The Hague NED
1999 — Prokopchuk, Evgeny vs Lugovoi, Aleksei — 1/2-1/2 — Novgorod RUS
2013 — Kireev, Vladimir Vasilyevich vs Trofimov, Nikolay Mihailovich — 1/2-1/2 — ICCF

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