E19h — Queen’s Indian: Old Main Line, 9.Qxc3 f5 10.b3

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.Nc3 Ne4 8.Qc2 Nxc3 9.Qxc3 f5 10.b3 * ● 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 f4….

Atouts. Les Blancs s'appuient sur les cases fortes f4, e5 et g5 et la paire de fous.

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

Plans. Be3 (Développer Bc1) ; h3 (Empêcher ...Bg4).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plan principal. Exploiter la case forte e4.

Atouts. Les Noirs s'appuient sur la case forte e4, des fous actifs en b7 et e7 et la paire de fous.

Côté adverse. Les fous enfermés en c1 et g2.

En contrepartie. Plusieurs pièces dorment encore (le cavalier b8 et la tour a8).

Plans. ...Nc6 (Développer Nb8) ; ...c5 (Rupture) ; ...d6 (Rupture) ; ...d5 (Rupture) ; ...e5 (Rupture).

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● a2→b3, f2→g3, h2→g3, b3→c4	● e6→f5, a7→b6, c7→b6, d7→e6
Passés	—	—
Majorité	—	—

Cases

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

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 7)
Bg2	● Bg2 Enfermé (mob. 2)
Bb7		● Bb7 Actif (mob. 6)
Be7		● Be7 Actif (mob. 7)
Paire de fous	● Oui	● Oui
Non développées	2 (● c1, ● a1)	2 (● b8, ● a8)

Sécurité du roi

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

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, ● …f5-f4

Partie
? 1977 – Round 2 – Polugaevsky, Lev – 0-1 – Korchnoi, Viktor – G1 1. c4 Nf6 2. d4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 Bf6
1927 Kecskemet II – Round 1 – Przepiorka, Dawid – 0-1 – Ahues, Carl – G5 1. d4 Nf6 2. Nf3 b6 3. g3 Bb7 4. Bg2 e6 5. O-O Be7 6. c4 O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 Nc6
1930 San Remo – Round 1 – Vidmar, Milan Sr – 1-0 – Colle, Edgar – G52 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 c5
1930 San Remo – Round 10 – Vidmar, Milan Sr – 1-0 – Colle, Edgar – G105 1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 c5
1934 Leningrad ch-URS – Round 1 – Belavenets, Sergey – 1/2-1/2 – Makogonov, Vladimir – G77 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 a5
1934 Leningrad ch-URS – Round 1 – Chekhover, Vitaly – 1/2-1/2 – Yudovich, Mikhail M – G78 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 a5
1938 Trade Unions – Round 4 – Mazel, Isaak Y – 1/2-1/2 – Rovner, Dmitry – G40 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. Nc3 Ne4 7. Qc2 Nxc3 8. Qxc3 O-O 9. O-O f5 10. b3 Bf6
1941 New York – Round 15 – Reshevsky, Samuel – 1/2-1/2 – Horowitz, Albert Israel – G30 1. c4 Nf6 2. Nf3 e6 3. d4 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 Bf6
1942 Ventnor City – Round 3 – Levin, Jerome A – 1-0 – Yanofsky, Daniel Abraham – G10 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 d6
1942 Ventnor City – Round 8 – Shainswit, George – 1/2-1/2 – Yanofsky, Daniel Abraham – G27 1. Nf3 Nf6 2. c4 e6 3. g3 b6 4. Bg2 Bb7 5. O-O Be7 6. d4 O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 Bf6
1944 ch – Round 15 – Opocensky, Karel – 1-0 – Prucha, Karel – G12 1. Nf3 Nf6 2. c4 b6 3. g3 Bb7 4. Bg2 e6 5. d4 Be7 6. Nc3 Ne4 7. Qc2 Nxc3 8. Qxc3 O-O 9. O-O f5 10. b3 Be4
1948 Karlovy Vary – Round 18 – Pirc, Vasja – 1-0 – Golombek, Harry – G170 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 Bf6
1948 Karlovy Vary – Round 3 – Podgorny, Jiri – 1-0 – Golombek, Harry – G37 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. Nc3 O-O 7. O-O Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 Bf6
1948 Karlovy Vary – Round 5 – Podgorny, Jiri – 1-0 – Gawlikowski, Stanislaw – G56 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. Nc3 Ne4 7. Qc2 Nxc3 8. Qxc3 O-O 9. O-O f5 10. b3 Bf6
1948 Moskou ch-URS – Round 6 – Kholmov, Ratmir D – 1-0 – Levenfish, Grigory – G55 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 Bf6
1948 Nijmegen – Round 7 – Kramer, Haije – 1-0 – Baay, Jacob – G20 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 Bf6
1948 US Open – Round 11 – Stark, Martin Charles – 0-1 – Santasiere, Anthony – G58 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. Nc3 Ne4 7. Qc2 Nxc3 8. Qxc3 O-O 9. O-O f5 10. b3 Qe8
1950 Amsterdam – Round 4 – Kramer, Hanspeter – 0-1 – Pirc, Vasja – G59 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 Bf6
1950 Interzonal – Round 9 – Rellstab, Ludwig – 1/2-1/2 – Pfeiffer, Gerhard – G14 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 Bf6
1950 Moskou ch-URS – Round 1 – Sokolsky, Alexey – 1/2-1/2 – Boleslavsky, Isaac – G52 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 Bf6
1951 Hungary Ch – Round 12 – Hajtun, Jozsef – 1-0 – Gracs, Pal – G55 1. Nf3 Nf6 2. g3 b6 3. Bg2 Bb7 4. O-O e6 5. c4 Be7 6. d4 O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 d6
1951 Madrid ESP – Round 4 – Giustolisi, Alberto – 1/2-1/2 – Medina-Garcia, Antonio – G9 1. Nf3 Nf6 2. g3 b6 3. Bg2 Bb7 4. O-O e6 5. c4 Be7 6. d4 O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 Bf6
1951 Moskou ch-URS – Round 1 – Petrosian, Tigran A. – 1/2-1/2 – Bronstein, David I – G66 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 Bf6
1951 Staunton Memorial – Round 1 – Donner, Jan-Hein – 1/2-1/2 – Pirc, Vasja – G5 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 Qe8
1952 Havana – Round 22 – Toran Albero, Roman – 1/2-1/2 – Rossolimo, Nicolas – G156 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. Nc3 Ne4 7. Qc2 Nxc3 8. Qxc3 O-O 9. O-O f5 10. b3 Bf6
1953 Candidats Tournament – Round 25 – Boleslavsky, Isaac – 1/2-1/2 – Taimanov, Mark E – G163 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 Bf6
1954 Olympiad final A – Round 1 – Pirc, Vasja – 1/2-1/2 – Euwe, Max – G91 1. Nf3 Nf6 2. d4 e6 3. c4 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 Bf6
1955 Gothenburg Interzonal – Round 4 – Donner, Jan-Hein – 1/2-1/2 – Ilivitsky, Georgy A – G33 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 a5
1956 Moscow olm fin-A – Round 1 – Najdorf, Miguel – 1/2-1/2 – Gligorić, Svetozar – G7 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 Bf6
1956 Moscow olm prel – Round 5 – Larsen, Benjamin Holsko – 1-0 – Zhugder – G170 1. Nf3 Nf6 2. g3 b6 3. Bg2 Bb7 4. O-O e6 5. c4 Be7 6. Nc3 O-O 7. d4 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 Bf6
1956 URS Ch sf – Round ? – Matskevich, Avshalom – 1/2-1/2 – Kholmov, Ratmir D – G51 1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. g3 Bb7 5. Bg2 Be7 6. Nc3 O-O 7. O-O Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 Bf6
1957 CSR Ch – Round 12 – Ujtelky, Maximilian – 1/2-1/2 – Kozma, Julius – G49 1. d4 Nf6 2. Nf3 b6 3. g3 Bb7 4. Bg2 e6 5. O-O Be7 6. c4 O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 Qc8
1957 CSR-ITA Prague CZE – Round 1 – Staldi, Cherubino – 1/2-1/2 – Blatny, Frantisek – G4 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 Bf6
1957 Dallas – Round 1 – Najdorf, Miguel – 0-1 – Reshevsky, Samuel – G14 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 Bf6
1958 Munich olm fin-A – Round 11 – Eliskases, Erich – 1/2-1/2 – Filip, Miroslav – G55 1. c4 e6 2. Nf3 Nf6 3. g3 b6 4. Bg2 Bb7 5. O-O Be7 6. d4 O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 Bf6
1958 Portoroz Interzonal – Round 18 – Benko, Pal – 1/2-1/2 – Filip, Marius Liviu – G168 1. c4 Nf6 2. g3 e6 3. Nf3 b6 4. Bg2 Bb7 5. O-O Be7 6. d4 O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 Bf6
1958 UKR Ch – Round 13 – Kots, Yuri I – 1/2-1/2 – Levin Godoy, Matias Bastian – G58 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 Bf6
1958 YUG Ch sf – Round 7 – Bajec, Ivo – 1/2-1/2 – Sokolov, Vladimir – G21 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 Bf6
1960 CSR Ch – Round 5 – Prucha, Karel – 1/2-1/2 – Blatny, Frantisek – G40 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 Bf6
1961 CSR Ch – Round 1 – Skacel, Jan – 1/2-1/2 – Ratolistka, Josef – G3 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 Bf6
1962 Clare Benedict Cup 09th – Round 1 – Darga, Klaus – 1-0 – Kupper, Josef – G1 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 Bf6
1962 Sarajevo – Round 1 – Darga, Klaus – 1/2-1/2 – Osmanagic, Dusan – G1 1. c4 Nf6 2. Nf3 e6 3. g3 b6 4. Bg2 Bb7 5. O-O Be7 6. Nc3 O-O 7. d4 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 d6
1962 Sarajevo – Round 11 – Ivkov, Borislav – 1-0 – Rejfir, Josef – G59 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 Bf6
1962 Sarajevo – Round 6 – Rejfir, Josef – 0-1 – Trifunovic, Petar – G37 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 Bf6
1963 Alekhine Memorial – Round 3 – Smyslov, Vladimir – 1/2-1/2 – Matanovic, Anto – G17 1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 Qe8
1963 Enschede zt – Round 16 – Darga, Klaus – 1/2-1/2 – Kupper, Josef – G77 1. d4 Nf6 2. Nf3 e6 3. g3 b6 4. Bg2 Bb7 5. O-O Be7 6. c4 O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 Bf6
1963 Halle zt – Round 1 – Minev, Nikolay N – 1/2-1/2 – Johansson Rexner, Melker – G38 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 Bf6
1963 Reggio Emilia 6364 06th – Round 10 – Barcza, Gedeon – 1-0 – Trincardi, Tullio – G34 1. Nf3 Nf6 2. g3 b6 3. Bg2 Bb7 4. c4 e6 5. O-O Be7 6. d4 O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 Bf6
1965 HUN Ch 21th – Round ? – Bilek, Istvan – 1/2-1/2 – Portisch, Lajos – G15 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 Bf6
1966 Malmo – Round 7 – Horberg, Bengt-Eric – 1/2-1/2 – Bech Johansson, Amadeus – G15 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 Bf6
1967 IBM – Round 11 – Moiseev, Oleg – 1/2-1/2 – Zuidema, Coen – G39 1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 Bf6
1967 Maribor – Round 5 – Ivkov, Borislav – 1/2-1/2 – Matanovic, Aleksandar – G31 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 Qe8
1968 Hoogovens – Round 14 – Bobotsov, Milko G – 1/2-1/2 – Padevsky, Nikola – G120 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. Nc3 Ne4 7. Qc2 Nxc3 8. Qxc3 O-O 9. O-O f5 10. b3 Bf6
1968 Palma de Mallorca – Round 1 – Pomar Salamanca, Arturo – 1/2-1/2 – Korchnoi, Viktor – G5 1. d4 Nf6 2. c4 b6 3. Nf3 e6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 Bf6
1968 Palma de Mallorca – Round 16 – Pomar Salamanca, Arturo – 1/2-1/2 – Korchnoi, Viktor – G140 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 Bf6
1969 Vrsac – Round 4 – Ivkov, Borislav – 1/2-1/2 – Matanovic, Aleksandar – G30 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 Qe8
1969 YUG Ch 24th – Round 15 – Bertok, Mario Jr. – 1/2-1/2 – Bukic, Enver – G53 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 Bf6
Hoogovens 1978 – Round 11 – Miles, Anthony J – 0-1 – Korchnoi, Viktor – G26 1. d4 Nf6 2. Nf3 e6 3. g3 b6 4. Bg2 Bb7 5. c4 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 Bf6

E19h — Old Main Line

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.Nc3 Ne4 8.Qc2 Nxc3 9.Qxc3 f5 10.b3

Eval: [+0.11]

Les coups candidats

10…Bf6 — 86.8% (726 parties)

Ambassadeurs : Noble, Mark Frederick (5x), Benko, Pal (4x), Reshevsky, Samuel (4x), Pirc, Vasja (4x), Hort, Vlastimil (4x), Boleslavsky, Isaac (3x), Blatny, Frantisek (3x), Darga, Klaus (3x)

10…d6 — 7.3% (61 parties)

Ambassadeurs : Levin, Jerome A (1x), Yanofsky, Daniel Abraham (1x), Sajtar, Jaroslav (1x), Podgorny, Jiri (1x), Nadeau, Paul (1x), Anderson, Frank Ross (1x), Darga, Klaus (1x), Osmanagic, Dusan (1x)

10…a5 — 1.9% (16 parties)

Ambassadeurs : Abramovic, Bosko (2x), Lechtynsky, Jiri (2x), Belavenets, Sergey (1x), Makogonov, Vladimir (1x), Chekhover, Vitaly (1x), Yudovich, Mikhail M (1x), Donner, Jan-Hein (1x), Ilivitsky, Georgy A (1x)

10…Qe8 — 1.4% (12 parties)

Ambassadeurs : Ivkov, Borislav (2x), Matanovic, Aleksandar (2x), Pirc Salamon, Hubert (2x), Stark, Martin Charles (1x), Santasiere, Anthony (1x), Filip, Miroslav (1x), Bobekov P (1x), Gruenfeld, Leo (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	10…Bf6	10…d6	10…a5	10…Qe8
<1800	12	83%	8%	—	—
1800-2200	237	84%	14%	0%	1%
2200-2600	285	89%	4%	4%	1%
2600+	15	100%	—	—	—

Évolution par décennie (% des parties)

Décennie	N parties	10…Bf6	10…d6	10…a5	10…Qe8
1920s	1	—	—	—	—
1930s	7	29%	—	29%	—
1940s	20	75%	15%	—	5%
1950s	47	77%	6%	6%	9%
1960s	63	86%	8%	—	5%
1970s	66	88%	8%	—	—
1980s	90	94%	3%	—	1%
1990s	138	88%	7%	3%	—
2000s	166	90%	5%	2%	—
2010s	213	86%	11%	1%	1%
2020s	25	88%	4%	—	4%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
10…Bf6	86%	88%	▲ +2.1%
10…d6	11%	4%	▼ -6.8%
10…a5	1%	0%	▼ -1.4%
10…Qe8	1%	4%	▲ +3.1%

Joueurs célèbres

Champions du monde dans cette position

Smyslov, Vladimir — 4 parties
Botvinnik, Mikhail — 2 parties
Tal, Mikhail — 1 partie
Euwe, Max — 1 partie

Parties historiques

10…Bf6 — 86.8% (726 parties)

1938 — Mazel, Isaak Y vs Rovner, Dmitry — 1/2-1/2 — Leningrad RUS
1939 — Roux Cabral, Luis vs Opsahl, Haakon — 1/2-1/2 — Buenos Aires ARG
1940 — Polland David vs Reshevsky, Samuel — 0-1 — New York, NY USA
1941 — Reshevsky, Samuel vs Horowitz, Albert Israel — 1/2-1/2 — New York, NY USA
1941 — Brunet, Philip vs Yanofsky, Daniel Abraham — 0-1 — Canada ch Winnipeg

10…d6 — 7.3% (61 parties)

1942 — Levin, Jerome A vs Yanofsky, Daniel Abraham — 1-0 — Ventnor City
1945 — Sajtar, Jaroslav vs Podgorny, Jiri — 0-1 — Zlin CZE
1946 — Nadeau, Paul vs Anderson, Frank Ross — 0-1 — Toronto CAN
1951 — Baron, Samuel vs Smith, Kenneth — 0-1 — Fort Worth, TX USA
1951 — Hajtun, Jozsef vs Gracs, Pal — 1-0 — Budapest HUN

10…a5 — 1.9% (16 parties)

1934 — Belavenets, Sergey vs Makogonov, Vladimir — 1/2-1/2 — Leningrad ch-URS
1934 — Chekhover, Vitaly vs Yudovich, Mikhail M — 1/2-1/2 — Leningrad ch-URS
1952 — Pirc Salamon, Hubert vs Stoltz, De Raven — 1/2-1/2 — Belgrade Belgrade YUG
1955 — Donner, Jan-Hein vs Ilivitsky, Georgy A — 1/2-1/2 — Goteborg SWE
1956 — Matskevich, Avshalom vs Romanovsky, Rem Konstantinovich — 1-0 — Kiev UKR

10…Qe8 — 1.4% (12 parties)

1948 — Stark, Martin Charles vs Santasiere, Anthony — 0-1 — Baltimore, MD USA
1950 — Filip, Miroslav vs Bobekov P — 1/2-1/2 — Prague CZE
1951 — Donner, Jan-Hein vs Pirc, Vasja — 1/2-1/2 — Birmingham ENG
1952 — Gruenfeld, Leo vs Pirc Salamon, Hubert — 1/2-1/2 — Belgrade SRB
1952 — Germek, Nikolay vs Pirc Salamon, Hubert — 1/2-1/2 — Belgrade SRB

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