E62s — King’s Indian: Fianchetto, Simagin, 8.d5

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 Nc6 7.O-O Bg4 8.d5 * ● Trait aux Noirs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plan principal. Exploiter la case forte d4….

Atouts. Les Blancs s'appuient sur les cases fortes d4, f4, b5 et g5 et la paire de fous.

Côté adverse. Le fou enfermé en g7.

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

Plans. Bg5 (Clouer Nf6) ; h3 (Empêcher ...Bg4).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plan principal. Exploiter la case forte e5….

Atouts. Les Noirs s'appuient sur les cases fortes e5 et f5, un fou actif en g4 et la paire de fous.

Côté adverse. Les fous enfermés en c1 et g2.

Plans. ...e6 (Rupture) ; ...e5 (Rupture).

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● f2→g3, h2→g3, c4→d5	● c7→d6, e7→d6, f7→g6, h7→g6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● d4 (2v1), ● f4 (2v0), ● b5 (2v0), ● g5 (2v0)	● e5 (2v1), ● f5 (2v0)
Cases faibles	—	● d5
Centre	● d4 (2v1), ● d5 (3v1)	● e5 (2v1)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bg2	● Bg2 Enfermé (mob. 2)
Bg4		● Bg4 Actif (mob. 7)
Bg7		● Bg7 Enfermé (mob. 2)
Paire de fous	● Oui	● Oui
Non développées	2 (● c1, ● a1)	1 (● a8)

Sécurité du roi

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

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	fermé
Ruptures	● c4-c5, ● e2-e3	● …e7-e6, ● …e7-e5

Partie
1936 Nottingham – Round ? – Capablanca, Jose – 1-0 – Tylor, Theodore – G117 1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. g3 O-O 5. Bg2 d6 6. d4 Nc6 7. O-O Bg4 8. d5 Bxf3 9. exf3 Ne5 10. Qb3 Nfd7
1936 Nottingham – Round 5 – Capablanca, Jose – 1-0 – Tylor, Theodore Henry – G73 1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. g3 O-O 5. Bg2 d6 6. d4 Nc6 7. O-O Bg4 8. d5 Bxf3 9. exf3 Ne5 10. Qb3 Nfd7
1938 Argentina – Round 13 – Bolbochan, J. – 1-0 – Villegas, Benito – G33 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. g3 O-O 5. Bg2 d6 6. Nf3 Nc6 7. O-O Bg4 8. d5 Bxf3 9. exf3 Ne5 10. Qe2 Ned7
1954 Belgrade – Round 18 – Wade, Robert G – 1/2-1/2 – Djurasevic, Bozidar – G141 1. c4 Nf6 2. Nc3 g6 3. d4 Bg7 4. Nf3 O-O 5. g3 d6 6. Bg2 Nc6 7. O-O Bg4 8. d5 Na5 9. b3 c5 10. dxc6 bxc6
1954 Bucharest – Round 11 – Stahlberg, Gideon – 1-0 – Voiculescu, Paul – G95 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 Bg4 7. O-O Nc6 8. d5 Bxf3 9. exf3 Na5 10. Qe2 c5
1956 URS Ch, semi final – Round 1 – Petrosian, Tigran A. – 1-0 – Gurgenidze, Bukhuti – G21 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 Nc6 7. O-O Bg4 8. d5 Bxf3 9. exf3 Na5 10. Qe2 c5
1957 Clare Benedict Cup 04th – Round 4 – Euwe, Max – 1/2-1/2 – Unzicker, Wolfgang – G31 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. c4 d6 6. d4 Nc6 7. Nc3 Bg4 8. d5 Na5 9. b3 c5 10. Bb2 a6
1957 Dublin zt – Round 9 – Dunkelblum, Arthur – 0-1 – Gligorić, Svetozar – G75 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. c4 d6 6. d4 Nc6 7. Nc3 Bg4 8. d5 Na5 9. b3 c5 10. Bd2 a6
1957 URS-JUG – Round 5 – Udovcic, Mijo – 0-1 – Taimanov, Mark E – G22 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. g3 O-O 5. Bg2 d6 6. Nf3 Nc6 7. O-O Bg4 8. d5 Na5 9. Nd2 c5 10. h3 Bd7
1957 Vienna AUT – Round 3 – Filip, Marius Liviu – 1/2-1/2 – Unzicker, Wolfgang – G5 1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. Nf3 O-O 5. O-O d6 6. Nc3 Nc6 7. d4 Bg4 8. d5 Na5 9. Qd3 c5 10. h3 Bd7
1957 WchT U26 04th – Round 1.2 – Mednis, Edmar J – 1/2-1/2 – Kozma, Julius – G4 1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. Nf3 O-O 5. O-O d6 6. d4 Nc6 7. Nc3 Bg4 8. d5 Bxf3 9. exf3 Na5 10. b3 c5
1957 WchT U26 04th – Round 9.2 – Portisch, Lajos – 1-0 – Kozma, Julius – G118 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. d4 O-O 5. c4 d6 6. Nc3 Nc6 7. O-O Bg4 8. d5 Na5 9. b3 c5 10. Bb2 a6
1957 Wenen etc – Round 5 – Heinicke, Herbert – 0-1 – Taimanov, Mark E – G28 1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. Nc3 O-O 5. d4 d6 6. Nf3 Nc6 7. O-O Bg4 8. d5 Na5 9. Qa4 c5 10. dxc6 Nxc6
1957 Zonal (Men) Wageningen NED – Round 1 – Szabo, Ladislav – 1-0 – Lindblom, Peter – G1 1. Nf3 Nf6 2. g3 g6 3. c4 Bg7 4. d4 O-O 5. Bg2 d6 6. O-O Nc6 7. Nc3 Bg4 8. d5 Bxf3 9. exf3 Na5 10. Qa4 c5
1958 Kiev Ch – Round 11 – Platonov, Igor V – 0-1 – Nikolaevsky, Yuri V – G53 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 Nc6 7. O-O Bg4 8. d5 Bxf3 9. exf3 Na5 10. Qe2 c5
1958 New York ch-USA – Round 2 – Reshevsky, Samuel – 1/2-1/2 – Mednis, Edmar J – G7 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 Nc6 7. O-O Bg4 8. d5 Na5 9. Nd2 c5 10. h3 Bd7
1959 Asztalos Memorial – Round 3 – Uhlmann, Wolfgang – 1/2-1/2 – Bilek, Istvan – G12 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. g3 O-O 5. Bg2 d6 6. Nf3 Nc6 7. O-O Bg4 8. d5 Na5 9. Nd2 c5 10. Qc2 a6
1959 HUN Ch – Round 17 – Florian, Tibor – 1-0 – Haag, Ervin – G16 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 d6 5. Nf3 O-O 6. O-O Nc6 7. Nc3 Bg4 8. d5 Na5 9. Nd2 c5 10. h3 Bd7
1959 HUN Ch Budapest HUN – Round 7 – Kluger, Gyula – 1/2-1/2 – Lengyel, Levente – G28 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. g3 O-O 5. Bg2 d6 6. Nf3 Nc6 7. O-O Bg4 8. d5 Na5 9. Nd2 c5 10. h3 Bd7
1959 Tbilisi ch-URS – Round 7 – Averbakh, Yuri L – 1/2-1/2 – Geller, Efim P – G52 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nf3 d6 6. Nc3 Nc6 7. O-O Bg4 8. d5 Na5 9. Nd2 c5 10. Qc2 a6
1960 Asztalos Memorial 3rd – Round 8 – Kluger, Gyula – 1-0 – Navarovszky, Laszlo – G14 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 Nc6 7. O-O Bg4 8. d5 Na5 9. b3 Qc8 10. Bd2 c5
1960 Budapest zt – Round 13 – Bertok, Mario Jr. – 1/2-1/2 – Kozma, Julius – G76 1. Nf3 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. d4 Nc6 7. Nc3 Bg4 8. d5 Na5 9. Nd2 c5 10. a3 Qc8
1960 Leipzig olm prel – Round 8 – Naranja, Renato – 1-0 – Schweber, Samuel – G262 1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. Bg2 O-O 5. Nf3 d6 6. d4 Nc6 7. O-O Bg4 8. d5 Bxf3 9. exf3 Ne5 10. Qe2 a5
1960 Madrid zt – Round 1 – Reilly, Brian – 0-1 – Neikirkh, Oleg – G6 1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. c4 Nc6 7. Nc3 Bg4 8. d5 Na5 9. Nd2 c5 10. Qc2 a6
1960 Moscow CCCT – Round 10 – Smyslov, Vladimir – 1-0 – Minev, Nikolay N – G53 1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. d4 d6 5. Nf3 O-O 6. O-O Nc6 7. Nc3 Bg4 8. d5 Na5 9. Nd2 c5 10. h3 Bd7
1960 New York ch-USA – Round 8 – Reshevsky, Samuel – 1-0 – Saidy, Anthony – G34 1. c4 g6 2. Nf3 Bg7 3. d4 d6 4. Nc3 Nf6 5. g3 O-O 6. Bg2 Nc6 7. O-O Bg4 8. d5 Na5 9. Nd2 c5 10. h3 Bd7
1960 St Louis US Open – Round ? – Sherwin, James T – 1-0 – Gilden, Lawrence – G2 1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. Nc3 O-O 5. d4 d6 6. Nf3 Nc6 7. O-O Bg4 8. d5 Na5 9. Nd2 c5 10. h3 Bd7
1960 URS Ch sf – Round 5 – Movshovich A – 0-1 – Gipslis, Aivars – G34 1. d4 Nf6 2. c4 d6 3. Nf3 g6 4. g3 Bg7 5. Bg2 O-O 6. O-O Nc6 7. Nc3 Bg4 8. d5 Bxf3 9. exf3 Na5 10. Qd3 c5
1961 CSR Ch – Round 16 – Dolezal, Jiri – 1/2-1/2 – Hort, Vlastimil – G155 1. Nf3 Nf6 2. d4 g6 3. c4 Bg7 4. g3 d6 5. Bg2 O-O 6. O-O Nc6 7. Nc3 Bg4 8. d5 Na5 9. b3 c5 10. Bd2 a6
1961 Mar del Plata – Round 10 – Filip, Marius Liviu – 1-0 – Perez Perez, Francisco Jose – G86 1. c4 g6 2. g3 Bg7 3. Bg2 Nf6 4. d4 O-O 5. Nc3 d6 6. Nf3 Nc6 7. O-O Bg4 8. d5 Bxf3 9. exf3 Na5 10. Qd3 c5
1961 Mar del Plata – Round 15 – Najdorf, Miguel – 1/2-1/2 – Aguilar Dominguez, Cristhel Guadalupe – G123 1. c4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. d4 Nc6 7. Nc3 Bg4 8. d5 Na5 9. Nd2 c5 10. Qc2 e5
1961 Maroczy Memorial – Round 1 – Dely, Peter – 1/2-1/2 – Taimanov, Mark E – G41 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. c4 d6 6. d4 Nc6 7. Nc3 Bg4 8. d5 Na5 9. Nd2 c5 10. Qc2 Qd7
1961 WchT U26 08th – Round 4.2 – Hollis, Adrian – 1/2-1/2 – Westerinen, Heikki M.J. – G37 1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 O-O 5. Bg2 d6 6. O-O Nc6 7. Nc3 Bg4 8. d5 Bxf3 9. exf3 Na5 10. Qe2 Nd7
1962 Asztalos Memorial 5th – Round 12 – Bilek, Istvan – 1-0 – Haag, Ervin – G92 1. Nf3 g6 2. g3 Bg7 3. Bg2 Nf6 4. O-O O-O 5. d4 d6 6. c4 Nc6 7. Nc3 Bg4 8. d5 Na5 9. Nd2 c5 10. Qc2 e5
1962 Hungary – Round 3 – Flesch, János – 1/2-1/2 – Kluger, Gyula – G22 1. c4 g6 2. Nc3 Bg7 3. d4 Nf6 4. Nf3 O-O 5. g3 d6 6. Bg2 Nc6 7. O-O Bg4 8. d5 Na5 9. Nd2 c5 10. Qc2 a6
1962 Hungary – Round 4 – Dely, Peter – 1/2-1/2 – Bilek, Istvan – G37 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. d4 d6 6. c4 Nc6 7. Nc3 Bg4 8. d5 Na5 9. b3 c5 10. Bd2 a6
1962 Marianske Lazne – Round 13 – Kluger, Gyula – 0-1 – Hort, Vlastimil – G81 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 Nc6 7. O-O Bg4 8. d5 Na5 9. Qd3 c5 10. h3 Bd7
1962 Marianske Lazne – Round 8 – Muehlberg, Siegfried – 1/2-1/2 – Taimanov, Mark E – G52 1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 O-O 5. Bg2 d6 6. O-O Nc6 7. Nc3 Bg4 8. d5 Na5 9. Nd2 c5 10. a3 Qc8
1962 Moscow RUS – Round ? – Barcza, Gedeon – 1-0 – Hort, Vlastimil – G38 1. g3 g6 2. Bg2 Bg7 3. c4 Nf6 4. Nc3 d6 5. d4 O-O 6. Nf3 Nc6 7. O-O Bg4 8. d5 Na5 9. b3 c5 10. Bb2 a6
1962 Moscow RUS – Round 1 – Barcza, Gedeon – 1-0 – Hort, Vlastimil – G31 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. d4 d6 6. c4 Nc6 7. Nc3 Bg4 8. d5 Na5 9. b3 c5 10. Bb2 a6
1962 URS-ch30 sf Novosibirsk – Round 10 – Kots, Yuri I – 1/2-1/2 – Gufeld, Eduard – G15 1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. c4 Nc6 7. Nc3 Bg4 8. d5 Na5 9. Nd2 c5 10. Qc2 e5
1962 Varna olm – Round 5 – Gudmundsson, Arinbjorn – 1/2-1/2 – Pachman, Ludek – G142 1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. c4 Nc6 7. Nc3 Bg4 8. d5 Na5 9. Nd2 c5 10. h3 Bd7
1962 Varna olm – Round 9 – Bergraser, Volf – 1/2-1/2 – Karastoichev, Emil BUL2 – G400 1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. c4 d6 5. Bg2 O-O 6. Nc3 Nc6 7. O-O Bg4 8. d5 Bxf3 9. exf3 Na5 10. Qd3 c5
1963 Budapest ch-HUN – Round 1 – Gasztonyi, Endre – 0-1 – Sapi, Laszlo – G96 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. g3 d6 5. Nf3 O-O 6. Bg2 Nc6 7. O-O Bg4 8. d5 Na5 9. b3 c5 10. Bb2 a6
1963 Budapest ch-HUN – Round 1 – Lengyel, Laszlo – 1/2-1/2 – Navarovszky, Laszlo – G91 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 Nc6 7. O-O Bg4 8. d5 Na5 9. b3 c6 10. Bb2 Rc8
1963 Budapest ch-HUN – Round 1 – Somogyi, Istvan – 1-0 – Honfi, K. – G56 1. d4 Nf6 2. c4 d6 3. g3 g6 4. Bg2 Bg7 5. Nc3 O-O 6. Nf3 Nc6 7. O-O Bg4 8. d5 Na5 9. b3 c5 10. Bb2 a6
1963 Capablanca Memorial – Round 2 – Ivkov, Borislav – 1/2-1/2 – Bobotsov, Milko G – G15 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nf3 d6 6. O-O Nc6 7. Nc3 Bg4 8. d5 Na5 9. b3 c5 10. Bb2 a6
1963 Halle zt – Round 1 – Johannessen, Simon T – 1-0 – Westerinen, Heikki M.J. – G6 1. c4 g6 2. Nf3 Bg7 3. Nc3 d6 4. d4 Nf6 5. g3 O-O 6. Bg2 Nc6 7. O-O Bg4 8. d5 Bxf3 9. exf3 Na5 10. Qd3 c5
1963 Hastings6364 – Round 3 – Khasin, Alexander – 1-0 – Hindle, Owen M – G8 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 Nc6 7. O-O Bg4 8. d5 Na5 9. Nd2 c5 10. Qc2 a6
1963 Hastings6364 – Round 7 – Brinck-Claussen, Bjorn – 1/2-1/2 – Hindle, Owen M – G24 1. c4 Nf6 2. Nf3 g6 3. g3 Bg7 4. d4 O-O 5. Bg2 d6 6. O-O Nc6 7. Nc3 Bg4 8. d5 Na5 9. Nd2 c5 10. b3 Nxd5
1963 Zonal Enschede NED – Round 1 – Van Scheltinga, Theo – 1-0 – Boey, Jin Huey – G3 1. c4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 O-O 5. d4 d6 6. Nc3 Nc6 7. O-O Bg4 8. d5 Na5 9. b3 c5 10. Bb2 a6
1964 Harrachov 6465 – Round 5 – Smejkal, Jan – 1-0 – Plachetka, Jan – G19 1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 O-O 5. Bg2 d6 6. O-O Nc6 7. Nc3 Bg4 8. d5 Bxf3 9. exf3 Ne5 10. b3 Ned7
1964 Leningrad – Round 5 – Udovcic, Mijo – 1/2-1/2 – Koychev Vladimirov, Cristian – G6 1. c4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. d4 Bg4 7. Nc3 Nc6 8. d5 Na5 9. Nd2 c5 10. Qc2 e5
1965 Budapest2 – Round 9 – Krogius, Nikolai V – 1-0 – Ozsvath, Andras – G38 1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. g3 O-O 5. Bg2 d6 6. O-O Nc6 7. Nc3 Bg4 8. d5 Na5 9. Nd2 c5 10. Qc2 a6
1965 HUN-ch21 – Round 1 – Barczay, Laszlo – 1-0 – Koberl, Ferenc – G14 1. d4 d6 2. Nf3 g6 3. g3 Bg7 4. c4 Nf6 5. Bg2 O-O 6. O-O Nc6 7. Nc3 Bg4 8. d5 Bxf3 9. exf3 Na5 10. b3 c5
1965 Hungary – Round 1 – Flesch, Janos – 1-0 – Ozsvath, Andras – G55 1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 O-O 5. Bg2 d6 6. O-O Bg4 7. Nc3 Nc6 8. d5 Na5 9. b3 c5 10. Bb2 a6
1966 Budapest HUN – Round 12 – Flesch, Janos – 1/2-1/2 – Balogh, Bela – G26 1. c4 Nf6 2. d4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 Nc6 7. O-O Bg4 8. d5 Na5 9. b3 c6 10. Bb2 Rc8
1966 Den Haag zt – Round 1 – Durão, Joaquim Manuel – 0-1 – Velimirovic, Dragoljub – G1 1. d4 Nf6 2. g3 g6 3. Bg2 Bg7 4. Nf3 O-O 5. O-O d6 6. c4 Nc6 7. Nc3 Bg4 8. d5 Bxf3 9. exf3 Ne5 10. Qe2 Ned7
1966 It II Beverwijk NED – Round 11 – Kramer, Haije – 1/2-1/2 – Ostojic, Predrag – G37 1. Nf3 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. d4 Nc6 7. Nc3 Bg4 8. d5 Na5 9. Qd3 c5 10. Bd2 b6
1966 It II Beverwijk NED – Round 7 – Beni, Alfred – 0-1 – Ostojic, Predrag – G23 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. d4 d6 6. c4 Nc6 7. Nc3 Bg4 8. d5 Bxf3 9. exf3 Na5 10. Qd3 c5
1966 La Habana olm prel – Round 2 – Palmason, Gudmundur – 1/2-1/2 – Winiwarter, Felix – G29 1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 O-O 5. Bg2 d6 6. O-O Nc6 7. Nc3 Bg4 8. d5 Na5 9. Nd2 c5 10. Qc2 a6
1966 URS Team Ch – Round ? – Osnos, Viatcheslav – 1-0 – Kaminik, Aleksandar – G132 1. Nf3 Nf6 2. d4 g6 3. c4 Bg7 4. g3 O-O 5. Bg2 d6 6. O-O Bg4 7. Nc3 Nc6 8. d5 Bxf3 9. exf3 Na5 10. Qd3 c5
1967 Budapest Bajnogsag 8th – Round 4 – Gasztonyi, Endre – 0-1 – Ozsvath, Andras – G21 1. d4 Nf6 2. c4 d6 3. Nf3 Bg4 4. Nc3 g6 5. g3 Bg7 6. Bg2 O-O 7. O-O Nc6 8. d5 Bxf3 9. exf3 Na5 10. Qe2 Nd7
1967 ROM Ch – Round 2 – Soos, Bela – 1-0 – Demian, Valer-Vasile – G9 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nf3 d6 6. O-O Nc6 7. Nc3 Bg4 8. d5 Na5 9. b3 c5 10. Bb2 a6
1967 Sochi – Round 13 – Lengyel, Laszlo – 0-1 – Simagin, Vladimir – G104 1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 O-O 5. Bg2 d6 6. Nc3 Bg4 7. O-O Nc6 8. d5 Bxf3 9. exf3 Na5 10. b3 c6
1967 URS-ch35 – Round 1 – Vaisman, Alexander – 1/2-1/2 – Simagin, Vladimir – G96 1. Nf3 Nf6 2. d4 g6 3. c4 Bg7 4. Nc3 d6 5. g3 O-O 6. Bg2 Nc6 7. O-O Bg4 8. d5 Na5 9. Nd2 c5 10. Qc2 a6
1967 US Open – Round 5 – Benko, Pal – 1-0 – Popovych, Orest – G13 1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. Bg2 O-O 5. d4 d6 6. Nf3 Nc6 7. O-O Bg4 8. d5 Na5 9. Nd2 c5 10. h3 Bd7
1968 Budapest – Round 1 – Portisch, Lajos – 1/2-1/2 – Belov, Leonid – G77 1. Nf3 g6 2. d4 Nf6 3. c4 Bg7 4. g3 O-O 5. Bg2 d6 6. Nc3 Nc6 7. O-O Bg4 8. d5 Na5 9. b3 c5 10. Bb2 a6
1968 Hungary – Round 1 – Barcza, Gedeon – 1-0 – Vadasz, Laszlo – G17 1. c4 g6 2. g3 Bg7 3. Bg2 d6 4. Nc3 Nf6 5. Nf3 O-O 6. O-O Nc6 7. d4 Bg4 8. d5 Na5 9. b3 c5 10. Bb2 a6
1968 Hungary – Round 1 – Portisch, Lajos – 1-0 – Sapi, Laszlo – G163 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. c4 d6 5. d4 O-O 6. Nc3 Nc6 7. O-O Bg4 8. d5 Na5 9. b3 c5 10. Bb2 a6
1968 Netanya-A – Round 6 – Porath, Yosef – 1/2-1/2 – Fischer, Robert J – G31 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 Nc6 7. O-O Bg4 8. d5 Na5 9. b3 c5 10. Bb2 Qd7
1968 Varna BUL – Round 10 – Vukic, Milan – 1-0 – Schoeneberg, Manfred – G29 1. d4 d6 2. Nf3 Nf6 3. c4 g6 4. g3 Bg7 5. Bg2 O-O 6. O-O Nc6 7. Nc3 Bg4 8. d5 Bxf3 9. exf3 Na5 10. Qe2 c5
1969 Moskou ch-URS – Round 1 – Furman, Slavomir – 1/2-1/2 – Taimanov, Mark E – G68 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 Nc6 7. O-O Bg4 8. d5 Na5 9. b3 c5 10. Bd2 a6
1969 Venice – Round 1 – Benko, Pal – 1/2-1/2 – Taimanov, Mark E – G4 1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 O-O 5. Bg2 d6 6. O-O Nc6 7. Nc3 Bg4 8. d5 Na5 9. Nd2 c5 10. h3 Bd7
1969 Venice – Round 11 – Benko, Pal – 1/2-1/2 – Taimanov, Mark E – G65 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 Nc6 7. O-O Bg4 8. d5 Na5 9. Nd2 c5 10. h3 Bd7
1969 Yugoslavia – Round 1 – Vukic E – 0-1 – Velimirovic, Dragoljub – G23 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. d4 d6 6. c4 Nc6 7. Nc3 Bg4 8. d5 Na5 9. Nd2 c5 10. h3 Bd7
1970 IBM – Round 8 – Marovic, Drazen – 1-0 – Westerinen, Heikki M.J. – G63 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 Nc6 7. O-O Bg4 8. d5 Na5 9. Nd2 c5 10. h3 Bd7
1970 Vinkovci – Round 14 – Larsen, Bent – 1/2-1/2 – Velimirovic, Dragoljub – G120 1. g3 g6 2. Bg2 Bg7 3. c4 Nf6 4. Nc3 d6 5. d4 O-O 6. Nf3 Nc6 7. O-O Bg4 8. d5 Na5 9. b3 c5 10. Bb2 a6
1971 Hoogovens – Round 1 – Timman, Jan H – 1/2-1/2 – Ciocaltea, Victor – G238 1. Nf3 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. d4 Nc6 7. Nc3 Bg4 8. d5 Na5 9. Nd2 c5 10. h3 Bd7
1972 Skopje ol (Men) fin-A – Round 10 – Smejkal, Jan – 1-0 – Tringov, Georgi P – G62 1. c4 g6 2. Nf3 Bg7 3. d4 Nf6 4. g3 O-O 5. Bg2 d6 6. O-O Nc6 7. Nc3 Bg4 8. d5 Na5 9. Nd2 c5 10. Qc2 e5
1972 Skopje ol (Men) fin-A – Round 13 – Uddenfeldt, Dan – 0-1 – Trapl, Jindrich – G178 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 Nc6 7. O-O Bg4 8. d5 Na5 9. Nd2 c5 10. h3 Bd7
Brasilia 1981 – Round 1 – Andersson, Ulf 1949 – 1-0 – Lucena, Lincoln – G15 1. Nf3 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. Nc3 Nc6 7. d4 Bg4 8. d5 Bxf3 9. exf3 Ne5 10. Qe2 Re8
Corsica Masters KO 2005 – Round 1.2 – Tregubov, Pavel V. – 0-1 – Polgar, Judit – G10 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 Nc6 7. O-O Bg4 8. d5 Na5 9. b3 c5 10. dxc6 bxc6
Linares 1981 – Round ? – Larsen, Bent – 1/2-1/2 – Quinteros, Miguel Angel – G25 1. c4 g6 2. g3 Bg7 3. Bg2 Nf6 4. d4 O-O 5. Nc3 d6 6. Nf3 Nc6 7. O-O Bg4 8. d5 Na5 9. b3 c5 10. dxc6 Nxc6
Linares 1981 – Round 1 – Larsen, Bent – 1/2-1/2 – Quinteros, Miguel Angel – G6 1. c4 g6 2. g3 Bg7 3. Bg2 Nf6 4. d4 O-O 5. Nc3 d6 6. Nf3 Nc6 7. O-O Bg4 8. d5 Na5 9. b3 c5 10. dxc6 Nxc6
Saint Louis Blitz 2017 – Round 15.4 – Navara, David – 0-1 – Nakamura, Hikaru – G74 1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 O-O 5. Bg2 d6 6. Nc3 Nc6 7. O-O Bg4 8. d5 Na5 9. b3 c5 10. dxc6 bxc6
Saint Louis Rapid 2017 – Round 6.4 – Navara, David – 0-1 – Nakamura, Hikaru – G29 1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 O-O 5. Bg2 d6 6. Nc3 Nc6 7. O-O Bg4 8. d5 Na5 9. b3 c5 10. dxc6 bxc6
World Blitz 2023 – Round 17.25 – Bocharov, Dmitry – 1-0 – Niemann, Hans Moke – G971 1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. Nc3 O-O 5. d4 d6 6. Nf3 Nc6 7. O-O Bg4 8. d5 Na5 9. Nd2 c5 10. h3 Bd7

E62s — Fianchetto Simagin

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 Nc6 7.O-O Bg4 8.d5

Les coups candidats

8…Na5 — 75.3% (685 parties)

Ambassadeurs : Taimanov, Mark (10x), Ciocaltea, Victor (9x), Hort, Vlastimil (5x), Westerinen, Heikki M.J. (5x), Kluger, Gyula (4x), Portisch, Lajos (4x), Bilek, Istvan (4x), De Coverly, Roger D (4x)

8…Bxf3 — 22.5% (205 parties)

Ambassadeurs : Villegas, Benito (2x), Capablanca, Jose (2x), Westerinen, Heikki M.J. (2x), Gurgenidze, Bukhuti (2x), Schweber, Samuel (2x), Tolnai, Tibor (2x), Kraidman, Yair (2x), Ibrayev, Nurlan (2x)

8…Ne5 — 1.0% (9 parties)

Ambassadeurs : Euwe, Max (1x), Filip, Miroslav (1x), Hollis, Adrian (1x), Stepak, Yedael (1x), Atanasov, Petko (1x), Peev, Peicho (1x), Lindholm, Pertti (1x), Bartl, Stanislav (1x)

8…Nb8 — 1.0% (9 parties)

Ambassadeurs : Ardeleanu, Alin (2x), Keene, Raymond D (1x), Woodcock, C. (1x), Rotstein, Arkadij (1x), Lauria, Amilcare (1x), Navrotescu, Catalin (1x), Van Antwerpen (1x), Van der By (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	8…Na5	8…Bxf3	8…Ne5	8…Nb8
<1800	10	30%	60%	—	10%
1800-2200	131	70%	27%	2%	—
2200-2600	575	79%	19%	1%	1%
2600+	11	91%	9%	—	—

Évolution par décennie (% des parties)

Décennie	N parties	8…Na5	8…Bxf3	8…Ne5	8…Nb8
1930s	4	—	100%	—	—
1950s	27	56%	41%	4%	—
1960s	81	68%	30%	1%	1%
1970s	97	90%	10%	—	—
1980s	82	80%	18%	1%	—
1990s	124	69%	26%	1%	3%
2000s	112	73%	24%	2%	1%
2010s	299	76%	22%	1%	1%
2020s	84	80%	19%	—	1%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
8…Na5	76%	80%	▲ +3.8%
8…Bxf3	22%	19%	▼ -3.0%
8…Ne5	1%	0%	▼ -1.0%
8…Nb8	1%	1%	▲ +0.5%

Joueurs célèbres

Champions du monde dans cette position

Euwe, Max — 3 parties
Ju, Wenjun — 2 parties
Smyslov, Vladimir — 1 partie
Tal, Mikhail — 1 partie
Ding, Liren — 1 partie

Parties historiques

8…Na5 — 75.3% (685 parties)

1953 — Klasup, Karlis vs Tal, Mikhail — 1-0 — Riga LAT
1954 — Wade, Robert G vs Djurasevic, Bozidar — 1/2-1/2 — Belgrade SRB
1957 — Filip, Marius Liviu vs Unzicker, Wolfgang — 1/2-1/2 — Vienna AUT
1957 — Heinicke, Herbert vs Taimanov, Mark — 0-1 — Wenen etc
1957 — Heinicke, Herbert vs Taimanov, Mark — 0-1 — Vienna AUT

8…Bxf3 — 22.5% (205 parties)

1936 — Capablanca, Jose vs Tylor, Theodore — 1-0 — Nottingham ENG
1936 — Capablanca, Jose vs Tylor, Theodore Henry — 1-0 — Nottingham ENG
1938 — Bolbochan, Julio vs Villegas, Benito — 1-0 — Buenos Aires ARG
1938 — Bolbochan, J. vs Villegas, Benito — 1-0 — Buenos Aires ARG
1954 — Rolland, Pierre vs Mazzoni, Guy — 1-0 — Paris FRA

8…Ne5 — 1.0% (9 parties)

1955 — Euwe, Max vs Filip, Miroslav — 1/2-1/2 — Rotterdam NED
1962 — Hollis, Adrian vs Stepak, Yedael — 1-0 — Marianske Lazne
1983 — Atanasov, Petko vs Peev, Peicho — 1/2-1/2 — Ruse
1998 — Lindholm, Pertti vs Bartl, Stanislav — 1-0 — ICCF
2001 — Podzielny, Karl-Heinz vs Curic, Drazen — 1-0 — Essen-Borbeck GER

8…Nb8 — 1.0% (9 parties)

1968 — Keene, Raymond D vs Woodcock, C. — 1-0 — Univ of London Union
1991 — Van Antwerpen vs Van der By — 1-0 — corr Netherlands
1997 — Navrotescu, Catalin vs Ardeleanu, Alin — 1-0 — Tusnad
1997 — Fancsy, Imre vs Ardeleanu, Alin — 1/2-1/2 — Gyula HUN
1998 — Rotstein, Arkadij vs Lauria, Amilcare — 1-0 — San Benedetto

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