D34b — QGD Tarrasch: 7.Bg2 Be7 8.O-O Be6

1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 Nf6 7.Bg2 Be7 8.O-O Be6 * ○ Trait aux Blancs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plan principal. Exploiter l'avant-poste f4.

Atouts. Les Blancs s'appuient sur un contrôle dominant de f4, e5 et g5, un avant-poste en f4 et la colonne semi-ouverte c.

Côté adverse. Le roi resté au centre.

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

Plans. dxc5 (Capture en c5, Frapper le centre adverse — 38 % des parties) ; Bg5 (Fou actif (mobilité 7), Développer c1 — 28 % des parties) ; b3 (Préparer le fianchetto — 15 % des parties) ; Bf4 (Fou actif (mobilité 9), Développer c1 — 6 % des parties) ; Be3 (Fou actif (mobilité 5), Développer c1 — 5 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

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Plan principal. Manœuvres et amélioration des pièces.

Atouts. Les Noirs s'appuient sur une majorité de pions à l'aile dame (3 contre 2), un contrôle dominant de b4, e4 et g4, un fou actif en e6 et la colonne semi-ouverte e.

En contrepartie. Le roi n'est pas encore à l'abri et plusieurs pièces dorment encore (les tours a8 et h8).

Plans. ...O-O (Mettre le roi en sécurité, connecter les tours — 28 % des parties) ; ...Ne4 (Cavalier centralisé en e4 — 11 % des parties) ; ...c4 (Frapper le centre adverse — 8 % des parties) ; ...cxd4 (Capture en d4, Occuper le centre — 6 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● f2→g3, h2→g3	—
Passés	—	—
Majorité	—	● aile dame 3v2

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● f4 (2v0), ● e5 (2v1), ● g5 (2v0)	● b4 (2v0), ● e4 (2v1), ● g4 (2v0)
Cases faibles	● d4	—
Centre	● e5 (2v1)	● d5 (3v1), ● e4 (2v1)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● c	● e

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bg2	● Bg2 Ok (mob. 2)
Be6		● Be6 Actif (mob. 5)
Be7		● Be7 Ok (mob. 2)
Paire de fous	● Oui	● Oui
Non développées	2 (● c1, ● a1)	2 (● a8, ● h8)

Sécurité du roi

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

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	fermé

Partie
1908 It (Men) Duesseldorf GER – Round 14 – Marshall Viele, Fabrizio Aaron – 1/2-1/2 – John, Walter – G15 1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 exd5 5. Nf3 Nc6 6. g3 Be6 7. Bg2 Nf6 8. O-O Be7 9. Bg5 h6 10. Bxf6 gxf6
1908 Prague – Round 1 – Vidmar, Milan Sr – 1-0 – Spielmann, Rudolf – G10 1. d4 e6 2. c4 d5 3. Nc3 c5 4. cxd5 exd5 5. Nf3 Nc6 6. g3 Nf6 7. Bg2 Be6 8. O-O Be7 9. e3 O-O 10. b3 Qa5
1908 Prague – Round 10 – Marshall, Frank – 1/2-1/2 – Salwe, Georg – G84 1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 exd5 5. Nf3 Nc6 6. g3 Be6 7. Bg2 Nf6 8. O-O Be7 9. Bg5 cxd4 10. Nxd4 Nxd4
1908 Prague – Round 10 – Vidmar, Milan Sr – 1-0 – Spielmann, Rudolf – G86 1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 exd5 5. Nf3 Nc6 6. g3 Nf6 7. Bg2 Be6 8. O-O Be7 9. e3 O-O 10. b3 Qa5
1908 Prague – Round 2 – Schlechter, Carl – 1-0 – Duz-Khotimirsky, Fedor Ivanovich – G24 1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 exd5 5. Nf3 Nc6 6. g3 Be6 7. Bg2 Nf6 8. O-O Be7 9. a3 O-O 10. dxc5 d4
1909 New York – Round 23 – Marshall Viele, Fabrizio Aaron – 0-1 – Capablanca, Jose – G9 1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 exd5 5. Nf3 Nc6 6. g3 Be6 7. Bg2 Be7 8. O-O Nf6 9. Bg5 Ne4 10. Bxe7 Qxe7
1911 Karlsbad – Round 1 – Rotlewi, Georg – 1/2-1/2 – Rubinstein, Akiba – G66 1. d4 d5 2. Nf3 c5 3. c4 e6 4. cxd5 exd5 5. Nc3 Nc6 6. g3 Nf6 7. Bg2 Be6 8. O-O Be7 9. dxc5 Bxc5 10. a3 O-O
1911 Karlsbad – Round 1 – Rubinstein, Akiba – 1/2-1/2 – Vidmar, Milan Sr – G73 1. d4 d5 2. Nf3 c5 3. c4 e6 4. cxd5 exd5 5. Nc3 Nc6 6. g3 Nf6 7. Bg2 Be6 8. O-O Be7 9. dxc5 Bxc5 10. a3 O-O
1911 New York USA – Round 5 – Hodges, Albert – 1-0 – Johner, Paul – G11 1. d4 d5 2. Nf3 e6 3. c4 c5 4. cxd5 exd5 5. Nc3 Nc6 6. g3 Nf6 7. Bg2 Be6 8. O-O Be7 9. Bg5 Ne4 10. Bxe7 Qxe7
1911 San Sebastian – Round 1 – Rubinstein, Akiba – 1/2-1/2 – Teichmann, Richard – G1 1. d4 d5 2. Nf3 c5 3. c4 e6 4. Nc3 Nc6 5. cxd5 exd5 6. g3 Be6 7. Bg2 Nf6 8. O-O Be7 9. dxc5 Bxc5 10. a3 O-O
1912 Biarritz m – Round ? – Marshall, Frank – 1/2-1/2 – Janowski, Dawid – G8 1. d4 d5 2. Nf3 c5 3. c4 e6 4. cxd5 exd5 5. Nc3 Be6 6. g3 Nc6 7. Bg2 Nf6 8. O-O Be7 9. dxc5 O-O 10. Bg5 h6
1912 DSB-18.Kongress – Round 4 – Burn, Amos – 0-1 – Tarrasch, Siegbert – G24 1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 exd5 5. Nf3 Nc6 6. g3 Be6 7. Bg2 Nf6 8. O-O Be7 9. dxc5 Bxc5 10. Bg5 d4
1912 It (Men) San Sebastian ESP – Round 11 – Forgacs, Gyula – 0-1 – Spielmann, Rudolf – G24 1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 exd5 5. Nf3 Nc6 6. g3 Nf6 7. Bg2 Be7 8. O-O Be6 9. Bg5 Ne4 10. Bxe7 Qxe7
1913 It (Men) Scheveningen NED – Round 1 – Loman, Rudolf – 0-1 – Olland, Adolf George – G2 1. d4 d5 2. Nf3 c5 3. c4 e6 4. cxd5 exd5 5. Nc3 Nc6 6. g3 Nf6 7. Bg2 Be6 8. O-O Be7 9. a3 O-O 10. dxc5 Bxc5
1913 New York National – Round 1 – Kupchik, Abraham – 1-0 – Zapoleon, LB. – G1 1. d4 d5 2. Nf3 c5 3. c4 e6 4. Nc3 Nc6 5. cxd5 exd5 6. g3 Nf6 7. Bg2 Be6 8. O-O Be7 9. dxc5 Bxc5 10. Bg5 Be7
1914 Baden-Baden GER – Round 9 – Rabinovich, Ilya Mar – 0-1 – Flamberg, Alexander – G9 1. d4 d5 2. c4 e6 3. Nc3 c5 4. Nf3 Nc6 5. cxd5 exd5 6. g3 Nf6 7. Bg2 Be7 8. O-O Be6 9. Bg5 Ne4 10. Bxe7 Qxe7
1915 Triberg – Round 10 – Bogoljubow, Efim – 1-0 – Rabinovich, Ilya Mar – G27 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 c5 5. cxd5 exd5 6. g3 Be6 7. Bg2 Be7 8. O-O Nc6 9. dxc5 Bxc5 10. b3 O-O
1915 Triberg – Round 7 – Rabinovich, Ilya Mar – 1-0 – Weinstein, Shaul – G19 1. d4 d5 2. Nf3 c5 3. c4 e6 4. cxd5 exd5 5. Nc3 Nc6 6. g3 Be6 7. Bg2 Nf6 8. O-O Be7 9. Bg5 Ne4 10. Bxe7 Qxe7
1916 Triberg – Round ? – Rabinovich, Ilya Mar – 1-0 – Maliutin, Boris – G2 1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 exd5 5. Nf3 Nc6 6. g3 Nf6 7. Bg2 Be6 8. O-O Be7 9. dxc5 Bxc5 10. Bg5 d4
1919 Amsterdam m1 – Round 7 – Euwe, Max – 1-0 – Kroone, Gerard – G7 1. Nf3 d5 2. d4 c5 3. c4 e6 4. cxd5 exd5 5. Nc3 Nc6 6. g3 Nf6 7. Bg2 Be6 8. O-O Be7 9. dxc5 d4 10. Na4 O-O
1919 Hastings – Round 1 – Capablanca, Jose – 1-0 – Olland, Adolf George – G1 1. d4 d5 2. c4 e6 3. Nf3 c5 4. cxd5 exd5 5. Nc3 Nf6 6. g3 Be6 7. Bg2 Nc6 8. O-O Be7 9. dxc5 Bxc5 10. Bg5 Be7
1919 Hastings – Round 1 – Winter, William – 0-1 – Olland, Adolf – G2 1. d4 d5 2. Nf3 c5 3. c4 e6 4. cxd5 exd5 5. Nc3 Nf6 6. g3 Nc6 7. Bg2 Be6 8. O-O Be7 9. dxc5 Bxc5 10. Bg5 Be7
1919 Hastings – Round 3 – Winter, William – 1-0 – Yates, Frederic D – G10 1. d4 d5 2. Nf3 c5 3. c4 e6 4. cxd5 exd5 5. Nc3 Be6 6. g3 Nc6 7. Bg2 Nf6 8. O-O Be7 9. dxc5 Bxc5 10. Bg5 Be7
1919 Hastings – Round 5 – Kostic, Boris – 1-0 – Olland, Adolf – G16 1. d4 d5 2. Nf3 c5 3. c4 e6 4. cxd5 exd5 5. Nc3 Nf6 6. g3 Be6 7. Bg2 Nc6 8. O-O Be7 9. dxc5 Bxc5 10. Bg5 Be7
1920 It (Men) Berlin GER – Round 2 – Bogoljubow, Efim – 1-0 – Tarrasch, Siegbert – G4 1. d4 d5 2. c4 e6 3. Nf3 c5 4. cxd5 exd5 5. Nc3 Nc6 6. g3 Nf6 7. Bg2 Be6 8. O-O Be7 9. dxc5 Bxc5 10. b3 O-O
1921 Budapest – Round 1 – Saemisch, Friedrich – 1/2-1/2 – Vajda, Arpad – G10 1. d4 d5 2. Nf3 e6 3. c4 Nf6 4. Nc3 c5 5. cxd5 exd5 6. g3 Nc6 7. Bg2 Be7 8. O-O Be6 9. dxc5 Bxc5 10. b3 a6
1922 Bad Pistyan – Round 14 – Reti, Richard – 1-0 – Tarrasch, Siegbert – G78 1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 exd5 5. Nf3 Nc6 6. g3 Nf6 7. Bg2 Be6 8. O-O Be7 9. dxc5 Bxc5 10. Na4 Be7
1923 Trieste – Round 1 – Asztalos, Lajos – 1-0 – Gonzalez Singer, Diego Alejandro – G4 1. d4 d5 2. Nf3 c5 3. c4 e6 4. cxd5 exd5 5. Nc3 Nc6 6. g3 Be7 7. Bg2 Be6 8. O-O Nf6 9. dxc5 Bxc5 10. Na4 Be7
1923 Trieste – Round 4 – Asztalos, Lajos – 1-0 – Singer, Leone – G23 1. d4 d5 2. Nf3 c5 3. c4 e6 4. cxd5 exd5 5. Nc3 Nc6 6. g3 Be7 7. Bg2 Be6 8. O-O Nf6 9. dxc5 Bxc5 10. Na4 Be7
1923 Verenigde Staten m ch-USA – Round 4 – Marshall Viele, Fabrizio Aaron – 1-0 – Lasker, E. – G4 1. d4 d5 2. Nf3 e6 3. c4 c5 4. cxd5 exd5 5. Nc3 Nc6 6. g3 Nf6 7. Bg2 Be6 8. O-O Be7 9. dxc5 Bxc5 10. Bg5 d4
1924 Weston – Round 9 – Mackenzie, Arthur J – 1/2-1/2 – Drewitt, John Arthur – G23 1. d4 d5 2. c4 e6 3. Nf3 c5 4. cxd5 exd5 5. Nc3 Nf6 6. g3 Nc6 7. Bg2 Be7 8. O-O Be6 9. dxc5 Bxc5 10. Qa4 O-O
1928 Brno – Round 3 – Kmoch, Hans – 1/2-1/2 – Marshall, Frank – G8 1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 c5 5. O-O Nc6 6. cxd5 exd5 7. d4 Be6 8. Nc3 Be7 9. dxc5 Bxc5 10. Na4 Be7
1931 Argentina – Round 7 – Castillo Lynch, Jacob Tyler – 1-0 – Maderna, Carlos – G23 1. c4 Nf6 2. Nc3 e6 3. g3 d5 4. Bg2 c5 5. cxd5 exd5 6. Nf3 Nc6 7. d4 Be6 8. O-O Be7 9. dxc5 d4 10. Nb5 Bxc5
1932 Pasadena – Round 1 – Dake, Arthur William – 1-0 – Factor, Samuel D – G24 1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 c5 5. cxd5 exd5 6. d4 Nc6 7. Nc3 Be6 8. O-O Be7 9. dxc5 Bxc5 10. Na4 Be7
1938 Bad Oeynhausen – Round 5 – Reinhardt, Heinrich – 0-1 – Acebey Michel, Veroska – G39 1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 exd5 5. Nf3 Nc6 6. g3 Nf6 7. Bg2 Be7 8. O-O Be6 9. Bg5 Ne4 10. Bxe7 Qxe7
1939 Bad Elster – Round 2 – Heinicke, Herbert – 1/2-1/2 – Michel, Paul – G6 1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 exd5 5. Nf3 Nc6 6. g3 Nf6 7. Bg2 Be7 8. O-O Be6 9. Bg5 Ne4 10. Bxe7 Qxe7
1939 Bad Oeynhausen ch-GER – Round 6 – Ernst, Wilhelm – 1/2-1/2 – Michel, Paul – G42 1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 exd5 5. Nf3 Nc6 6. g3 Nf6 7. Bg2 Be7 8. O-O Be6 9. h3 O-O 10. dxc5 d4
1939 Buenos Aires ol f-A – Round 9 – Enevoldsen, Jens – 1/2-1/2 – Acebey Michel, Veroska – G170 1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 exd5 5. Nf3 Nc6 6. g3 Nf6 7. Bg2 Be7 8. O-O Be6 9. Be3 c4 10. Ne5 O-O
1941 Buenos Aires Circulo – Round 5 – Frydman, Paulino – 1/2-1/2 – Acebey Michel, Veroska – G15 1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 exd5 5. Nf3 Nc6 6. g3 Nf6 7. Bg2 Be7 8. O-O Be6 9. dxc5 Bxc5 10. Na4 Be7
1941 Mar del Plata – Round 7 – Bolbochan, J. – 1/2-1/2 – Michel, Pascal – G60 1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 exd5 5. Nf3 Nc6 6. g3 Nf6 7. Bg2 Be7 8. O-O Be6 9. dxc5 Bxc5 10. Na4 Be7
1946 Mar del Plata – Round 3 – Iliesco, Juan – 1-0 – Letelier Martner, Rene – G39 1. c4 e6 2. Nf3 d5 3. g3 Nf6 4. Bg2 c5 5. cxd5 exd5 6. d4 Nc6 7. O-O Be6 8. Nc3 Be7 9. dxc5 Bxc5 10. Na4 Be7
1946 Mar del Plata – Round 5 – Sanguinetti, Ricardo – 0-1 – Michel, Pascal – G58 1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 exd5 5. Nf3 Nc6 6. g3 Nf6 7. Bg2 Be7 8. O-O Be6 9. Bg5 Ne4 10. Bxe7 Qxe7
1946 Moscow-Prague – Round 8 – Kotov, Alexander. – 1-0 – Opocensky, Karel – G33 1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 exd5 5. Nf3 Nc6 6. g3 Nf6 7. Bg2 Be6 8. O-O Be7 9. dxc5 Bxc5 10. Na4 Be7
1950 Mar del Plata – Round 14 – Gligorić, Svetozar – 1/2-1/2 – Michel, Paul – G122 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 Nf6 5. O-O e6 6. c4 Be7 7. cxd5 exd5 8. Nc3 Be6 9. dxc5 Bxc5 10. Na4 Be7
1951 Moskou ch-URS – Round 1 – Simagin, Vladimir – 1/2-1/2 – Bondarevsky, Igor – G3 1. c4 e6 2. Nc3 d5 3. d4 c5 4. cxd5 exd5 5. Nf3 Nc6 6. g3 Nf6 7. Bg2 Be7 8. O-O Be6 9. b3 O-O 10. Bb2 b6
1951 Reggio Emilia – Round 1 – Millin, P – 1/2-1/2 – Rellstab, Ludwig – G8 1. d4 Nf6 2. Nf3 e6 3. c4 c5 4. g3 d5 5. cxd5 exd5 6. Bg2 Nc6 7. O-O Be6 8. Nc3 Be7 9. dxc5 Bxc5 10. Ng5 O-O
1951 Schlechter Memorial – Round ? – Lasker, Edward – 0-1 – Michel, Paul – G5 1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 exd5 5. Nf3 Nc6 6. g3 Nf6 7. Bg2 Be7 8. O-O Be6 9. dxc5 Bxc5 10. Bg5 d4
1953 URS chT sf – Round ? – Kholmov, Ratmir D – 1/2-1/2 – Batigin – G2 1. d4 e6 2. c4 d5 3. Nc3 c5 4. cxd5 exd5 5. Nf3 Nc6 6. g3 Nf6 7. Bg2 Be7 8. O-O Be6 9. Be3 O-O 10. h3 c4
1955 Hamburg – Round 2 – Stahlberg, Gideon – 1-0 – Rellstab, Ludwig – G32 1. Nf3 Nf6 2. c4 c5 3. Nc3 e6 4. g3 d5 5. cxd5 exd5 6. d4 Nc6 7. Bg2 Be6 8. O-O Be7 9. dxc5 Bxc5 10. Na4 Be7
1956 Moscow olm fin-A – Round 11 – Filip, Marius Liviu – 1/2-1/2 – Unzicker, Wolfgang – G178 1. c4 Nf6 2. g3 e6 3. Bg2 d5 4. Nf3 c5 5. O-O Nc6 6. cxd5 exd5 7. d4 Be6 8. Nc3 Be7 9. dxc5 Bxc5 10. Na4 Be7
1959 Argentina – Round 10 – Foguelman, Alberto – 1-0 – Incutto, Carlos – G49 1. d4 Nf6 2. c4 e6 3. g3 c5 4. Nf3 d5 5. cxd5 exd5 6. Bg2 Nc6 7. O-O Be6 8. Nc3 Be7 9. dxc5 Bxc5 10. Bg5 d4
1959 UKR Ch – Round 19 – Rotstein, Jefim – 1/2-1/2 – Kostiuchenko, Alexander – G140 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 c5 5. cxd5 exd5 6. Bg2 Nc6 7. O-O Be6 8. Nc3 Be7 9. h3 O-O 10. Be3 Qc8
1961 Oberhausen etc – Round 1 – Botvinnik, Mikhail – 1-0 – Unzicker, Wolfgang – G4 1. c4 Nf6 2. Nf3 e6 3. g3 d5 4. Bg2 c5 5. O-O Nc6 6. cxd5 exd5 7. d4 Be6 8. Nc3 Be7 9. Be3 c4 10. Ne5 O-O
1969 Buesum – Round 7 – Szabo, Laszlo – 1/2-1/2 – Zaitsev, Alexander – G21 1. Nf3 c5 2. c4 e6 3. g3 Nc6 4. Bg2 Nf6 5. O-O d5 6. cxd5 exd5 7. d4 Be6 8. Nc3 Be7 9. dxc5 Bxc5 10. Na4 Be7
1969 OWL Ch – Round 9 – Speer, Albrecht – 1-0 – Budt, Karl-Heinz – G20 1. Nf3 d5 2. d4 c5 3. c4 e6 4. cxd5 exd5 5. g3 Nc6 6. Bg2 Nf6 7. O-O Be6 8. Nc3 Be7 9. dxc5 d4 10. Na4 O-O
1969 URS Ch sf – Round ? – Zhukhovitsky, Samuel – 1-0 – Pavlenko, Oleg – G4 1. c4 Nf6 2. Nc3 c5 3. Nf3 Nc6 4. g3 e6 5. Bg2 d5 6. cxd5 exd5 7. d4 Be7 8. O-O Be6 9. dxc5 d4 10. Nb5 Bxc5

D34b — QGD Tarrasch (1908)

1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 Nf6 7.Bg2 Be7 8.O-O Be6

Les coups candidats

9.dxc5 — 37.9% (258 parties)

Ambassadeurs : Michel, Clement Paul (2x), Rellstab, Ludwig (2x), Pavlenko, Oleg (2x), Pomar Salamanca, Arturo (2x), Filip, Miroslav (1x), Unzicker, Ferdinand, Dr. (1x), Gligoric, Svetozar (1x), Stahlberg, Gideon (1x)

9.Bg5 — 27.8% (189 parties)

Ambassadeurs : Welling, Gerard (2x), Marusenko, Petr (2x), Bolbochan, Jacobo (1x), Schneider, Lars-Ake (1x), Pietzsch, Wolfgang (1x), Troeger, Rainer (1x), Piro, Valerio (1x), Incutto, Carlos (1x)

9.b3 — 14.9% (101 parties)

Ambassadeurs : Blanco Fernandez, Alvaro (3x), Simagin, Vladimir (1x), Bondarevsky, Igor (1x), Bilo, Heinz (1x), Soelter, Reinhold (1x), Manouck, Thierry (1x), Herb, Pascal (1x), Lacko, Pavel (1x)

9.Bf4 — 6.5% (44 parties)

Ambassadeurs : Schweber, Samuel (1x), Luna, Julio (1x), Roth, Rolf (1x), Isaacson, David (1x), Schwartzman, Gabriel (1x), Bauer, Jachym (1x), Rehorek, Radomir (1x), Nemes, Gyorgy (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	9.dxc5	9.Bg5	9.b3	9.Bf4
<1800	61	34%	33%	7%	10%
1800-2200	359	39%	26%	14%	6%
2200-2600	163	40%	31%	20%	2%
2600+	2	50%	—	50%	—

Évolution par décennie (% des parties)

Décennie	N parties	9.dxc5	9.Bg5	9.b3	9.Bf4
1950s	15	60%	20%	7%	—
1960s	13	69%	8%	—	15%
1970s	15	27%	33%	20%	—
1980s	22	36%	18%	27%	14%
1990s	105	30%	34%	15%	7%
2000s	182	31%	32%	18%	7%
2010s	255	41%	29%	13%	4%
2020s	73	51%	11%	12%	15%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
9.dxc5	41%	51%	▲ +9.9%
9.Bg5	29%	11%	▼ -17.7%
9.b3	13%	12%	▼ -0.6%
9.Bf4	4%	15%	▲ +11.5%

Joueurs célèbres

Champions du monde dans cette position

Botvinnik, Mikhail — 1 partie
Lasker, Emanuel — 1 partie

Parties historiques

9.dxc5 — 37.9% (258 parties)

1950 — Gligoric, Svetozar vs Michel, Clement Paul — 1/2-1/2 — Mar del Plata ARG
1951 — Lasker, Edward vs Michel, Paul — 0-1 — Vienna AUT
1951 — Lasker, Emanuel vs Michel, Clement Paul — 0-1 — Vienna AUT
1951 — Alice, Millena Miguelina de Souza vs Rellstab, Ludwig — 1/2-1/2 — Reggio Emilia ITA
1953 — Jacobsen, Arenth vs Schou, K B — 0-1 — Copenhagen DEN

9.Bg5 — 27.8% (189 parties)

1952 — Piro, Valerio vs Incutto, Carlos — 0-1 — Buenos Aires ARG
1956 — Bolbochan, Jacobo vs Schneider, Lars-Ake — 1-0 — Moskou olm
1957 — Pietzsch, Wolfgang vs Troeger, Rainer — 1-0 — Zittau
1964 — Viner, Phillip vs Lopez Munoz, Johan Schneider — 1-0 — Tel Aviv ISR
1972 — Cobo Arteaga, Eldis vs Simon, Roger — 1-0 — Skopje MKD

9.b3 — 14.9% (101 parties)

1951 — Simagin, Vladimir vs Bondarevsky, Igor — 1/2-1/2 — Moskou ch-URS
1972 — Jansa, Vlastimil vs Beliavsky, Alexander G — 1/2-1/2 — Sombor
1973 — Bilo, Heinz vs Soelter, Reinhold — 1/2-1/2 — Oelde
1979 — Spiridonov, Nikola vs Mardarowicz, Jacek — 0-1 — Naleczow
1980 — Manouck, Thierry vs Herb, Pascal — 1/2-1/2 — Puteaux

9.Bf4 — 6.5% (44 parties)

1964 — Roth, Rolf vs Isaacson, David — 1/2-1/2 — Tel Aviv olm prel
1965 — Schweber, Samuel vs Luna, Julio — 1-0 — Buenos Aires ch-ARG
1986 — Flear, Christine vs Geneciran, Glenda — 1-0 — Dubai UAE
1988 — Schwartzman, Gabriel vs Bauer, Jachym — 1-0 — Hallein
1988 — Rehorek, Radomir vs Nemes, Gyorgy — 1-0 — Zalaegerszeg

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