E11c — Bogo-Indian: 4.Nbd2 b6

1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+ 4.Nbd2 b6 * ○ Trait aux Blancs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Atouts. Les Blancs s'appuient sur la case forte e5 et la paire de fous.

Côté adverse. Le fou enfermé en c8 et le roi resté au centre.

En contrepartie. Le roi n'est pas encore à l'abri et plusieurs pièces dorment encore (les fous c1 et f1 et les tours a1 et 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).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Atouts. Les Noirs s'appuient sur un fou actif en b4 et la paire de fous.

Côté adverse. Les fous enfermés en c1 et f1 et le roi resté au centre.

En contrepartie. Le roi n'est pas encore à l'abri et plusieurs pièces dorment encore (le cavalier b8, le fou c8 et les tours a8 et h8).

Plans. O-O (Mettre le roi en sécurité, connecter les tours) ; ...d6 (Libérer Bc8) ; ...Nc6 (Développer Nb8) ; ...Bg4 (Clouer Nf3) ; ...c5 (Rupture).

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	—	● a7→b6, c7→b6, d7→e6, f7→e6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● e5 (2v0)	—
Cases faibles	—	—
Centre	● d4 (1v0), ● e5 (2v0)	● d5 (2v1)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 0)
Bf1	● Bf1 Non développé (mob. 0)
Bb4		● Bb4 Actif (mob. 8)
Bc8		● Bc8 Non développé (mob. 2)
Paire de fous	● Oui	● Oui
Clouages	● knight d2	—
Non développées	4 (c1, f1, a1, h1)	4 (b8, c8, a8, h8)

Sécurité du roi

	♔ Blancs	♚ Noirs
Statut	● Au centre !	● Au centre !
Droits de roque	O-O / O-O-O	O-O / O-O-O

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	semi-ouvert
Ruptures	● c4-c5, ● d4-d5, ● e2-e3	● …c7-c6, ● …c7-c5, ● …d7-d6, ● …d7-d5, ● …e6-e5

Partie
19. European Teams 2013 – Round 1.15 – Beinoras, Mindaugas – 1/2-1/2 – Papaioannou, Ioannis CS – G19 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Qxd2 Bb7 7. g3 a5 8. Bg2 O-O 9. b3 d6 10. O-O Nbd7
1927 Moskou ch-URS – Round 8 – Selezniev, Alexey – 1-0 – Ilyin Zhenevsky, Alexander – G22 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Nxd2 Bb7 7. b4 O-O 8. Qc2 c5 9. e3 Qe7 10. Bb2 Rc8
1931 Brno Brno CZE – Round 1 – Fazekas, Stephan – 1/2-1/2 – Steiner, Heinrich Jun. – G4 1. d4 Nf6 2. Nf3 e6 3. c4 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Qxd2 Bb7 7. e3 O-O 8. Bd3 c5 9. Qe2 d5 10. cxd5 exd5
1932 Trebitsch mem15 – Round 5 – Podhorzer, David – 1/2-1/2 – Eliskases, Erich – G11 1. d4 Nf6 2. Nf3 e6 3. c4 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Nxd2 Bb7 7. Qc2 d5 8. e3 Nbd7 9. cxd5 exd5 10. Bd3 O-O
1939 Margate Premier Reserves A – Round 9 – Pogoriely, Henryk – 1/2-1/2 – Koenig, Imre – G13 1. Nf3 Nf6 2. c4 e6 3. d4 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Nxd2 Bb7 7. b4 O-O 8. Bb2 a5 9. e3 Qe7 10. b5 d6
1945 Novi Sad – Round 8 – Tomovic, Vasilje – 1-0 – Milic, Borislav – G98 1. d4 Nf6 2. Nf3 e6 3. c4 Bb4+ 4. Nbd2 b6 5. e3 O-O 6. Bd3 d6 7. O-O Bxd2 8. Qxd2 Bb7 9. Qc2 Bxf3 10. gxf3 e5
1961 Maroczy Memorial – Round 1 – Uhlmann, Wolfgang – 1-0 – Barcza, Gedeon – G25 1. d4 Nf6 2. Nf3 e6 3. c4 Bb4+ 4. Nbd2 b6 5. e3 O-O 6. Be2 d5 7. O-O Nbd7 8. b3 Qe7 9. Qc2 Bd6 10. e4 dxe4
1962 Lasker Memorial Berlin-Ost – Round 4 – Malich, Burkhard, Dr. – 1/2-1/2 – Beni, Alfred – G16 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. e3 Bb7 6. a3 Bxd2+ 7. Bxd2 Ne4 8. Be2 O-O 9. O-O d6 10. Rc1 Nd7
1963 Bad Liebenstein – Round 13 – Uhlmann, Wolfgang – 1/2-1/2 – Damjanovic, Mato – G90 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Qxd2 Bb7 7. b4 O-O 8. Bb2 d6 9. e3 Nbd7 10. Be2 Qe7
1963 Dravograd – Round 8 – Nicevski, Risto – 0-1 – Ceglar, Robert – G12 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. e3 Bb7 6. Be2 O-O 7. a3 Be7 8. Qc2 d5 9. O-O Nbd7 10. b4 c5
1964 Belgrade – Round 10 – Ivkov, Borislav – 1-0 – Korchnoi, Viktor – G68 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. e3 O-O 6. Bd3 d5 7. O-O Ba6 8. b3 c5 9. Bb2 cxd4 10. exd4 Nc6
1965 Zagreb – Round 17 – Antoshin, Vladimir S – 0-1 – Ivkov, Borislav – G170 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Qxd2 O-O 7. e3 d5 8. b3 c5 9. dxc5 bxc5 10. Bd3 Nc6
1966 La Habana olm fin-B – Round 3 – Langeweg, Kick – 1/2-1/2 – Ducic, Bogdan – G45 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Qxd2 O-O 7. e3 Ne4 8. Qc2 f5 9. Bd3 Bb7 10. b3 d6
1968 Memorial Em. Lasker – Round 12 – Uhlmann, Wolfgang – 1-0 – Bronstein, David I – G37 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Qxd2 a5 7. b3 Bb7 8. e3 O-O 9. Be2 d6 10. O-O Nbd7
1968 URS-JUG – Round 1 – Ivkov, Borislav – 0-1 – Bronstein, David I – G1 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. e3 c5 6. Bd3 cxd4 7. exd4 Bb7 8. O-O O-O 9. a3 Be7 10. b3 d6
1969 Capablanca Memorial – Round 5 – Uhlmann, Wolfgang – 1-0 – Haro Garcia, Gilberto – G38 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. a3 Be7 6. e4 d5 7. e5 Ne4 8. cxd5 exd5 9. Bd3 Nxd2 10. Bxd2 O-O
1969 DSV-Turnier – Round 3 – Golz, Werner – 1-0 – Sydor, Andrzej – G12 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. a3 Be7 6. e4 O-O 7. Bd3 d5 8. e5 Ne8 9. cxd5 exd5 10. Qe2 c5
1969 Raach zt – Round 1 – Adamski, Jan – 0-1 – Ivkov, Borislav – G8 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. e3 c5 6. dxc5 Bxc5 7. Bd3 Bb7 8. O-O O-O 9. a3 Be7 10. b3 d5
1969 Sarajevo – Round 2 – Uhlmann, Wolfgang – 1-0 – Damjanovic, Marko – G21 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Qxd2 O-O 7. b4 a5 8. Bb2 axb4 9. axb4 Rxa1+ 10. Bxa1 d6
20. European Teams 2015 – Round 2.11 – Hammer, Jon Ludvig – 1-0 – Kveinys, Aloyzas – G65 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Qxd2 Bb7 7. e3 O-O 8. Be2 d6 9. O-O Ne4 10. Qc2 f5
20. European Teams 2015 – Round 8.5 – Hammer, Jon Ludvig – 1/2-1/2 – Meier, Georg – G351 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Qxd2 Bb7 7. e3 O-O 8. Be2 d5 9. O-O c5 10. cxd5 Bxd5
30. ECC Open 2014 – Round 6.3 – Dubov, Daniil – 1-0 – Meribanov, Vitaly – G126 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Qxd2 Bb7 7. e3 O-O 8. Be2 d6 9. b4 Nbd7 10. Bb2 Qe7
36. Olympiad 2004 – Round 5 – Kempinski, Robert – 1/2-1/2 – Speelman, Jon S – G144 1. d4 e6 2. Nf3 Nf6 3. c4 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Qxd2 Bb7 7. e3 d6 8. Be2 Nbd7 9. O-O O-O 10. b4 Ne4
40. Olympiad Open 2012 – Round 10.28 – Amanov, Mesgen – 1/2-1/2 – Amin, Bassem – G560 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Qxd2 Bb7 7. e3 O-O 8. Be2 Ne4 9. Qc2 f5 10. O-O Rf6
41. Olympiad Open 2014 – Round 2.30 – Ragger, Markus – 1-0 – Markos, Jan – G140 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Qxd2 Bb7 7. e3 O-O 8. Be2 d6 9. O-O a5 10. b3 Nbd7
41. Olympiad Open 2014 – Round 3.5 – Bartel, Mateusz – 1/2-1/2 – Quesada Perez, Yuniesky – G228 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Qxd2 Bb7 7. e3 d6 8. b4 Nbd7 9. Bb2 O-O 10. Be2 a5
41. Olympiad Open 2014 – Round 6.11 – Laznicka, Viktor – 1/2-1/2 – Hansen, Torbjorn Ringdal – G395 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Qxd2 a5 7. b3 Bb7 8. e3 O-O 9. Be2 d5 10. O-O Nbd7
41. Olympiad Open 2014 – Round 8.8 – Shankland, Sam – 1-0 – Polgar, Judit – G598 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Qxd2 Bb7 7. e3 a5 8. b3 d6 9. Be2 Nbd7 10. Bb2 O-O
43. Olympiad 2018 – Round 10.12 – Mareco, Sandro – 0-1 – Paichadze, Luka – G635 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Qxd2 Bb7 7. e3 O-O 8. Be2 Ne4 9. Qc2 f5 10. b4 a5
43. Olympiad 2018 – Round 3.8 – Rodshtein, Maxim – 1-0 – Hjartarson, Johann – G225 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Qxd2 Bb7 7. e3 d6 8. Be2 Nbd7 9. b4 a5 10. Bb2 Ne4
7. World Team Championship 2010 – Round 2 – Roiz, Michael – 1/2-1/2 – Akopian, Vladimir – G30 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Qxd2 Bb7 7. e3 O-O 8. Be2 a5 9. b3 d6 10. O-O Nbd7
Amber Rapidplay 2000 – Round 1 – Gelfand, Boris – 1-0 – Nikolic, Predrag – G5 1. Nf3 Nf6 2. d4 e6 3. c4 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Qxd2 Bb7 7. e3 O-O 8. Be2 Ne4 9. Qc2 d6 10. O-O Nd7
Candidats Tournament 1985 – Round 5 – Smyslov, Vassily – 1/2-1/2 – Seirawan, Yasser – G29 1. d4 Nf6 2. Nf3 e6 3. c4 Bb4+ 4. Nbd2 b6 5. e3 Bb7 6. a3 Bxd2+ 7. Qxd2 O-O 8. b3 Ne4 9. Qc2 f5 10. Bd3 d6
Corus A 2006 – Round 10 – Sokolov, Ivan. – 1/2-1/2 – Adams, Michael – G62 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Qxd2 Bb7 7. e3 O-O 8. Be2 d5 9. O-O Nbd7 10. b4 dxc4
Cote d'Ivoire Blitz 2019 – Round 5.4 – Ding, Liren – 1-0 – Amin, Bassem – G24 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Qxd2 Bb7 7. e3 O-O 8. Be2 Ne4 9. Qc2 f5 10. O-O Rf6
EU Team Ch (Men) 17th 2009 – Round 1 – Nyback, Tomi – 1-0 – Jobava, Baadur – G1 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Qxd2 Bb7 7. e3 O-O 8. Be2 d6 9. O-O Nbd7 10. b4 Ne4
EU-Cup 24th 2008 – Round 2 – Van Wely, Loek – 1/2-1/2 – Hracek, Zbynek – G2 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Qxd2 Bb7 7. e3 a5 8. b3 d6 9. Bb2 Nbd7 10. Be2 O-O
FIDE Grand Swiss 2025 – Round 2 – Gukesh D – 1/2-1/2 – Erdogmus Yagiz Kaan – G59 1. d4 d5 2. c3 Nf6 3. Bg5 c6 4. Qc2 Ne4 5. Bf4 Bf5 6. Qb3 Qb6 7. f3 Nd6 8. Nd2 Nd7 9. g4 Bg6 10. h4 h6
FIDE WCh KO 2001 – Round 4.1 – Bareev, Evgeny – 1-0 – Ehlvest, Jaan – G292 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Qxd2 O-O 7. g3 Ba6 8. Qc2 Bb7 9. Bg2 d6 10. O-O Nbd7
FIDE World Rapid Championship 2014 – Round 14.9 – Eljanov, Pavel – 1-0 – Naiditsch, Arkadij – G85 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Qxd2 Bb7 7. e3 a5 8. b3 O-O 9. Be2 d5 10. O-O Nbd7
Interpolis 1984 – Round 1 – Timman, Jan H – 1-0 – Andersson, Ulf 1949 – G49 1. Nf3 Nf6 2. d4 e6 3. c4 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Qxd2 Bb7 7. e3 O-O 8. Be2 d6 9. b4 a5 10. Bb2 Ne4
Linares 1983 – Round 1 – Miles, Anthony J – 1/2-1/2 – Andersson, Ulf 1949 – G7 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. e3 Bb7 6. Be2 O-O 7. O-O Be7 8. b3 c5 9. Bb2 cxd4 10. Nxd4 Nc6
Madrid 1996 – Round 5 – Gelfand, Boris – 0-1 – Illescas Cordoba, Miguel – G18 1. d4 Nf6 2. Nf3 e6 3. c4 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Qxd2 Bb7 7. e3 O-O 8. Be2 d6 9. O-O Nbd7 10. b4 Ne4
Phillips&Drew 1982 – Round 1 – Portisch, Lajos – 1-0 – Andersson, Ulf 1949 – G14 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. e3 c5 6. a3 Bxd2+ 7. Qxd2 O-O 8. Be2 a5 9. b3 Bb7 10. O-O d6
Tal Memorial Blitz 2014 – Round 2.3 – Gelfand, Boris – 1-0 – Tomashevsky, Evgeny – G9 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Qxd2 Bb7 7. e3 O-O 8. Be2 d6 9. O-O Nbd7 10. b4 Ne4
TCh-RUS 2005 – Round 5 – Gelfand, Boris – 1/2-1/2 – Moiseenko, Alexander – G76 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Qxd2 Bb7 7. e3 O-O 8. Be2 d6 9. O-O Nbd7 10. b4 Ne4
TCh-RUS 2005 – Round 9 – Ivanchuk, Vasyl – 1/2-1/2 – Moiseenko, Alexander – G145 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Qxd2 O-O 7. e3 Bb7 8. Be2 d6 9. O-O Ne4 10. Qc2 f5
TCh-RUS 2008 – Round 11 – Navara, David – 1/2-1/2 – Akopian, Vladimir – G316 1. Nf3 Nf6 2. c4 e6 3. d4 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Qxd2 Bb7 7. e3 a5 8. b3 d6 9. Be2 Nbd7 10. Bb2 O-O
Turin ol (Men) 37th 2006 – Round 6 – Agrest, Evgenij – 1/2-1/2 – Georgiev, Kiril – G77 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Qxd2 Bb7 7. e3 O-O 8. Be2 d6 9. O-O a5 10. b3 Nbd7
World Blitz 2007 – Round 5 – Grischuk, Alexander – 1/2-1/2 – Adams, Michael – G44 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Qxd2 Bb7 7. e3 a5 8. b3 d6 9. Be2 Nbd7 10. O-O O-O
World Blitz 2015 – Round 20.38 – Cheparinov, Ivan – 1-0 – Moiseenko, Alexander – G1253 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Qxd2 Bb7 7. e3 O-O 8. Be2 d6 9. b4 Nbd7 10. Bb2 Ne4
World Blitz 2016 – Round 12.34 – Anton Guijarro, David – 1/2-1/2 – Moiseenko, Alexander – G488 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Qxd2 Bb7 7. e3 O-O 8. Be2 d6 9. b4 Nbd7 10. Bb2 Ne4
World Blitz 2016 – Round 18.28 – Al-Sayed, Mohammed – 1-0 – Moiseenko, Alexander – G718 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Qxd2 Bb7 7. e3 O-O 8. Be2 d6 9. b3 Nbd7 10. Bb2 Ne4
World Blitz 2016 – Round 4.14 – Bok, Benjamin – 0-1 – Jobava, Baadur – G141 1. d4 Nf6 2. Nf3 e6 3. c4 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Qxd2 O-O 7. e3 a5 8. b3 d5 9. Be2 Ba6 10. O-O a4
World Blitz 2016 – Round 5.13 – Adhiban, B. – 1-0 – Moiseenko, Alexander – G182 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Qxd2 Bb7 7. g3 a5 8. b3 O-O 9. Bg2 d6 10. O-O Nbd7
World Blitz 2016 – Round 6.21 – Bok, Benjamin – 1-0 – Moiseenko, Alexander – G231 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Qxd2 Bb7 7. e3 O-O 8. Be2 d6 9. O-O Nbd7 10. b4 Ne4
World Cup 1988 – Round 1 – Nogueiras Santiago, Jesus – 1/2-1/2 – Andersson, Ulf 1949 – G44 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Qxd2 O-O 7. g3 Bb7 8. Bg2 d5 9. cxd5 Bxd5 10. O-O Nbd7
World Cup 1989 – Round 1 – Jussupow, Artur – 1/2-1/2 – Nikolic, Predrag – G32 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Qxd2 Bb7 7. e3 O-O 8. Be2 Ne4 9. Qd3 d5 10. b3 a5
World Cup 1989 – Round 1 – Portisch, Lajos – 1/2-1/2 – Andersson, Ulf 1949 – G16 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Qxd2 Bb7 7. e3 O-O 8. b4 a5 9. b5 d6 10. Bb2 Nbd7
World Rapid 2016 – Round 14.22 – Wojtaszek, Radoslaw – 1/2-1/2 – Quparadze, Giga – G528 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Qxd2 Bb7 7. e3 d6 8. b4 O-O 9. Be2 Nbd7 10. O-O Ne4
World Rapid 2019 – Round 14.66 – Belov, Vladimir – 1/2-1/2 – Vokhidov, Shamsiddin – G932 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Qxd2 Bb7 7. e3 d6 8. Be2 Nbd7 9. b4 a5 10. Bb2 axb4
World Rapid 2021 – Round 4.24 – Matlakov, Maxim – 1/2-1/2 – Bellahcene, Bilel – G214 1. d4 e6 2. Nf3 Nf6 3. c4 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Nxd2 Bb7 7. Qc2 O-O 8. b3 d6 9. Bb2 Nbd7 10. e4 c5

E11c —

1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+ 4.Nbd2 b6

Eval: [+0.37]

Les coups candidats

5.a3 — 66.5% (4207 parties) →

Ambassadeurs : Kozul, Zdenko (38x), Cebalo, Miso (33x), Andersson, Ulf (31x), Cramling, Pia (19x), Kempinski, Robert (17x), Drasko, Milan (16x), Lputian, Smbat (15x), Malakhatko, Vadim (15x)

5.e3 — 17.0% (1076 parties)

Ambassadeurs : Cramling, Pia (11x), Kosten, Anthony C. (10x), Dreev, Aleksey (10x), Sorin, Ariel (9x), Andersson, Ulf (9x), Kholmov, Ratmir D (7x), Lundin, Anders (7x), Macieja, Bartlomiej (7x)

5.g3 — 16.2% (1027 parties)

Ambassadeurs : Naumkin, Igor (10x), Barkhagen, Jonas (9x), Hracek, Zbynek (8x), Korchnoi, Viktor (8x), Grivas, Efstratios (7x), Szabolcsi, Janos (6x), Ionescu, Constantin (6x), Rajkovic, Dusan (6x)

5.Qb3 — 0.1% (6 parties)

Ambassadeurs : Henley, Robert (1x), Olafsson, Fridrik (1x), Kostic, Vladimir (1x), Guerra, Alessandro (1x), Kostic, Vladimir G (1x), Baumgartner, Heinz (1x), Vranic, Ljubomir (1x), Korponai, Akos (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	5.a3	5.e3	5.g3	5.Qb3
<1800	59	78%	14%	7%	—
1800-2200	1381	64%	15%	21%	0%
2200-2600	4232	68%	17%	15%	0%
2600+	222	81%	12%	7%	—

Évolution par décennie (% des parties)

Décennie	N parties	5.a3	5.e3	5.g3	5.Qb3
1920s	11	27%	36%	36%	—
1930s	16	25%	31%	44%	—
1940s	5	20%	60%	20%	—
1950s	9	11%	89%	—	—
1960s	37	24%	70%	5%	—
1970s	67	24%	52%	24%	—
1980s	435	58%	30%	11%	1%
1990s	1053	63%	21%	16%	—
2000s	1623	65%	17%	18%	—
2010s	2254	70%	13%	17%	0%
2020s	813	77%	10%	14%	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
5.a3	70%	77%	▲ +6.9%
5.e3	13%	10%	▼ -3.2%
5.g3	17%	14%	▼ -3.6%
5.Qb3	0%	0%	-0.1%

Joueurs célèbres

Champions du monde dans cette position

Karpov, Anatoly — 7 parties
Smyslov, Vladimir — 6 parties
Carlsen, Magnus — 5 parties
Ding, Liren — 5 parties
Gukesh D — 4 parties
Anand, Viswanathan — 3 parties
Alekhine, Alexander — 2 parties
Tal, Mikhail — 2 parties
Kasparov, Garry — 1 partie
Karpov, Aleksandr — 1 partie
Hou, Yifan — 1 partie
Ju, Wenjun — 1 partie

Parties historiques

5.a3 — 66.5% (4207 parties)

1924 — Jonet, F. vs Matisons, Hermanis — 0-1 — Paris FRA
1927 — Selezniev, Alexey vs Ilyin Zhenevsky, Alexander — 1-0 — Moskou ch-URS
1927 — Bogoljubow, Efim vs Winter, William — 1-0 — London ENG
1931 — Fazekas, Stephan vs Steiner, Heinrich Jun. — 1/2-1/2 — Brno Brno CZE
1932 — Podhorzer, David vs Eliskases, Erich — 1/2-1/2 — Vienna AUT

5.e3 — 17.0% (1076 parties)

1926 — Moritz, Bruno vs Hoenlinger, Baldur — 1/2-1/2 — Vienna AUT
1929 — Factor, Samuel D vs Steiner, Herman — 1/2-1/2 — Saint Louis
1929 — Freiman, Sergey Nikolaevich vs Kan, Ilya A — 1-0 — Odessa ch-URS
1929 — Capablanca, Jose vs Thomas, George Alan — 1-0 — Hastings Town Hall
1931 — Myhre, Erling vs Alexandersson, Harry — 0-1 — Sweden

5.g3 — 16.2% (1027 parties)

1926 — Alekhine, Alexander vs Mirlas, Luis — 1-0 — Buenos Aires ARG
1926 — Colle, Edgar vs Monticelli, Mario — 1/2-1/2 — Budapest HUN
1927 — Rejfir, Josef vs Prokes, Ladislav — 0-1 — Prague Evony
1929 — Sergeant, Edward vs Thomas, George Alan — 1-0 — Hastings Town Hall
1931 — Zamikhovsky, Abram vs Kan, Ilya A — 1/2-1/2 — Moscow RUS

5.Qb3 — 0.1% (6 parties)

1986 — Henley, Robert vs Olafsson, Fridrik — 1/2-1/2 — Reykjavik ISL
1989 — Kostic, Vladimir vs Guerra, Alessandro — 1-0 — Caorle op Caorle ITA
1989 — Kostic, Vladimir G vs Baumgartner, Heinz — 1-0 — Austria
2013 — Vranic, Ljubomir vs Korponai, Akos — 1-0 — Senta SRB
2014 — Gonzalez Rodriguez, Raul Omar vs Castells Briones, Miquel — 1-0 — Barcelona ESP

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