B91n — Sicilian: Najdorf, 6.g3 e5 7.Nde2 Be7 8.Bg2 O-O

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.g3 e5 7.Nde2 Be7 8.Bg2 O-O * ○ Trait aux Blancs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Atouts. Les Blancs s'appuient sur une majorité de pions à l'aile_dame (3 contre 2), la case forte d5, un avant-poste en d5, la paire de fous et la colonne semi-ouverte d.

Côté adverse. Le pion arriéré d6 et les fous enfermés en e7 et c8.

En contrepartie. Le roi n'est pas encore à l'abri et plusieurs pièces dorment encore (le fou c1 et les tours a1 et h1).

Plans. O-O (Mettre le roi en sécurité, connecter les tours) ; Bg5 (Clouer Nf6) ; Tour sur colonne d.

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Atouts. Les Noirs s'appuient sur une majorité de pions à l'centre (2 contre 1), la case forte g4, la paire de fous et la colonne semi-ouverte c.

Côté adverse. Le fou enfermé en c1 et le roi resté au centre.

En contrepartie. Plusieurs pièces dorment encore (le cavalier b8, le fou c8 et la tour a8) et le pion arriéré d6.

Plans. ...Nbd7 (Développer Nb8) ; ...Bf5 (Développer Bc8) ; ...d5 (Rupture) ; Tour sur colonne c.

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	● d6
Chaînes	● f2→g3, h2→g3	● d6→e5, b7→a6
Passés	—	—
Majorité	● aile_dame 3v2	● centre 2v1

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● d5 (3v1)	● g4 (2v0)
Cases faibles	—	—
Centre	● d4 (2v1), ● d5 (3v1), ● e4 (2v1)	● e5 (1v0)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● d	● c

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bg2	● Bg2 Ok (mob. 3)
Be7		● Be7 Enfermé (mob. 0)
Bc8		● Bc8 Non développé (mob. 5)
Paire de fous	● Oui	● Oui
Non développées	3 (c1, a1, h1)	3 (b8, c8, a8)

Sécurité du roi

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

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	fermé
Ruptures	● f2-f3	● …d6-d5

Partie
11. Tal Mem Blitz 2018 – Round 10.4 – Anand, Viswanathan – 1/2-1/2 – Gelfand, Boris – G67 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O b5 10. Nd5 Nxd5
1950 Dubrovnik olm – Round 10 – Skold, Kent-Ake – 0-1 – Reshevsky, Samuel – G148 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O b5 10. h3 Bb7
1950 Venice – Round 6 – Czerniak, Magdalena – 1-0 – Pachman, Ludek – G59 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O Be6 10. h3 Nbd7
1952 Helsinki olm – Round 1 – Milic, Bozidar – 1-0 – Muller, Kaden – G179 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O Nbd7 10. a4 Qc7
1952 Moskou ch-URS – Round 1 – Konstantinopolsky, Alexander – 1/2-1/2 – Geller, Efim P – G99 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O b5 10. h3 Bb7
1952 Saltsjobaden Interzonal – Round 8 – Wade, Robert G – 0-1 – Petrosian, Tigran V – G72 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O Nbd7 10. b3 b5
1953 Mar del Plata – Round 17 – Medina-Garcia, Antonio – 1/2-1/2 – Najdorf, Miguel – G166 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O Nbd7 10. a4 b6
1953 Zagreb – Round 10 – Dimc, Dragutin – 1/2-1/2 – Milic, Borislav – G85 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O Be6 10. h3 b5
1954 Nottingham ch-BCF – Round 10 – Anderson, Patrick J – 0-1 – Wade, Robert G – G33 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O Nbd7 10. h3 b5
1954 Olympiad final A – Round 1 – Olafsson, Fridrik – 1/2-1/2 – Szabo, Ladislav – G59 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O Qc7 10. a4 Be6
1954 URS Ch, semi final – Round 1 – Antoshin, Vladimir S – 1-0 – Moiseev, Oleg – G43 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O Be6 10. h3 Nbd7
1955 Gothenburg Interzonal – Round 13 – Acuna Medina, Angel G. – 0-1 – Ilivitsky, Georgy A – G122 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O Be6 10. a4 a5
1955 Gothenburg Interzonal – Round 3 – Acuna Medina, Angel G. – 1/2-1/2 – Filip, Marius Liviu – G26 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O Be6 10. h3 b5
1955 POL-URS Lodz POL – Round ? – Tarnowski, Alfred – 0-1 – Boleslavsky, Isaac – G8 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O Nbd7 10. h3 b5
1956 Budapest Szikra – Round ? – Honfi, Karoly – 1/2-1/2 – Benko, Pal – G22 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O Nbd7 10. a4 b6
1956 Corr Dyckhoff Memorial – Round 1 – Akerlind Nielsen, Melvin – 0-1 – O'Kelly de Galway, Alberic – G7 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O Nbd7 10. h3 b5
1956 Danmarksmesterskabet – Round 1 – Enevoldsen, Jens – 1/2-1/2 – Norman Hansen, Holger – G2 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Nde2 Be7 7. g3 O-O 8. Bg2 a6 9. a4 b6 10. h3 Bb7
1956 Moscow olm prel – Round 4 – Danfi, V. – 0-1 – Bolbochan, J. – G124 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O Be6 10. Nd5 Nxd5
1957 Madrid – Round 10 – Diez del Corral, Jesus – 0-1 – Darga, Klaus – G44 1. e4 c5 2. Nf3 Nf6 3. Nc3 d6 4. d4 cxd4 5. Nxd4 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O Nbd7 10. a4 b6
1957 Sombor – Round 13 – Puc, Stojan – 0-1 – Bogdanovic, Rajko – G128 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. a4 Nc6 10. O-O Nb4
1958 Portoroz Interzonal – Round 1 – Benko, Pal – 1-0 – Fuster, Geza – G7 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. a4 Be6 10. O-O Qc7
1958 WchT U26 fin-A 05th – Round 2 – Blatny, Frantisek – 1/2-1/2 – Bogdanovic, Rajko – G15 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O Be6 10. f4 b5
1959 Kragujevac ch14-YUG – Round 1 – Ugrinovic, Dragan – 1/2-1/2 – Udovcic, Mijo – G65 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O Nbd7 10. b3 b5
1959 UKR Ch – Round 11 – Ousatchi, Mark – 1/2-1/2 – Stein, Leonid – G84 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O Be6 10. Bg5 Nbd7
1960 CSR Ch – Round 8 – Blatny, Frantisek – 1/2-1/2 – Kozma, Julius – G68 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O Qc7 10. h3 Be6
1960 Mar del Plata – Round 2 – Gadia, Okicio – 0-1 – Wexler, Bernardo – G31 1. Nf3 c5 2. e4 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O b5 10. a3 Bb7
1961 Katowice ch18-POL – Round 4 – Kostro, Jerzy – 0-1 – Bednarski, Jacek B – G36 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O Be6 10. h3 Nbd7
1962 It Bamberg GER – Round 11 – Ellrich, Paul – 1/2-1/2 – Parma, Bruno – G54 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O Qc7 10. a4 b6
1962 Kiev (Ukraine) – Round 17 – Lewicki, Sergey – 1/2-1/2 – Kots, Yuri I – G28 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O Nbd7 10. Bg5 h6
1963 Pan American Ch – Round 9 – Lopez Mario D – 0-1 – Gadia, Olicio – G39 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O b5 10. a3 Bb7
1963 Sweden – Round 1 – Skold, Kristian – 1-0 – Burehall, Arne – G3 1. e4 c5 2. d4 cxd4 3. Nf3 d6 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O Qc7 10. Bg5 Nbd7
1963 URS Team Ch – Round 1 – Faibisovich, Vadim Z – 0-1 – Bukhover, A – G11 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O Nbd7 10. h3 b5
1964 Magdeburg ch DDR – Round 14 – Fuchs, Reinhart – 1-0 – Schmidt, Gerhard – G33 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O Nbd7 10. a4 b6
1964 Sarajevo BIH – Round 6 – Matulovic, Milan – 1/2-1/2 – Bogdanovic, Rajko – G14 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O Qc7 10. h3 b5
1964 WchT U26 11. fin-A – Round 8.3 – Ujtumen, Tudev – 1/2-1/2 – Zuckerman, Bernard – G140 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O Nbd7 10. h3 b5
1965 Rubinstein Memorial – Round 1 – Matulovic, Milan – 1/2-1/2 – Bednarski, Jacek – G2 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O Nbd7 10. a4 b6
1965 Sarajevo – Round 2 – Matulovic, Milan – 1-0 – Tringov, Georgi P – G27 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O Nbd7 10. a4 b6
1965 Tbilisi Tbilisi GEO – Round 1 – Pietzsch, Wolfgang – 1/2-1/2 – Bogdanovic, Rajko – G30 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O Nbd7 10. h3 b5
1966 La Habana olm fin-A – Round 3 – Enevoldsen, Jens – 1/2-1/2 – Ghitescu, Theodor – G50 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O Nbd7 10. a4 b6
1966 La Habana olm fin-A – Round 3 – Fuchs, Reinhart – 1/2-1/2 – Padevsky, Nikola – G51 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. a4 Be6 10. O-O Nbd7
1966 Titovo Uzice – Round 1 – Nikolic, Stanimir – 0-1 – Tringov, Georgi P – G42 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O Nbd7 10. a4 b6
1967 Havana Armies Ch 4th – Round 7 – Ujtumen, Tudev – 1/2-1/2 – Adamski, Jan – G43 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O Nbd7 10. h3 b5
1967 POL Team Ch 20th – Round 8 – Kostro, Jerzy – 1/2-1/2 – Judycki, Wieslaw – G55 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O Nbd7 10. h3 b5
1967 Sousse Interzonal – Round 19 – Myagmarsuren, Lkhamsuren – 0-1 – Kavalek, Lubomir – G175 1. e4 c5 2. Nf3 d6 3. Nc3 a6 4. d4 cxd4 5. Nxd4 Nf6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O Nbd7 10. a4 b6
1968 Sarajevo – Round 11 – Matulovic, Milan – 1-0 – Barczay, Laszlo – G78 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O Nbd7 10. a4 h6
1972 Skopje ol (Men) fin-A – Round 1 – Diez del Corral, Jesus – 1-0 – Pytel, Krzysztof – G233 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O Nbd7 10. a4 b6
2. Du Te Cup 2018 – Round 3.1 – Vachier-Lagrave, Maxime – 1/2-1/2 – Wojtaszek, Radoslaw – G7 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O b5 10. Nd5 Nbd7
42. Olympiad 2016 – Round 4.6 – Adams, Michael – 1/2-1/2 – Giri, Anish – G303 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O b5 10. Nd5 Nxd5
42. Olympiad 2016 – Round 6.1 – Bok, Benjamin – 1/2-1/2 – Sethuraman, S.P. – G388 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O Be6 10. a4 Qc8
43. Olympiad 2018 – Round 9.7 – Ragger, Markus – 1/2-1/2 – Saric, Ivan – G618 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O b5 10. Nd5 Nbd7
5. Zurich CC Blitz 2016 – Round 2.2 – Anand, Viswanathan – 1/2-1/2 – Giri, Anish – G5 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O b5 10. Nd5 Nbd7
78. Tata Steel GpA 2016 – Round 6.7 – Adams, Michael – 1/2-1/2 – Van Wely, Loek – G42 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O b5 10. Nd5 Nbd7
FIDE World Cup 2019 – Round 1.1 – Pridorozhni, Aleksei – 1/2-1/2 – Wang, Hao(ZJWZ) – G36 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O b5 10. Nd5 Nbd7
FIDE World Cup 2019 – Round 5.1 – Vitiugov, Nikita – 1/2-1/2 – Yu, Yangyi – G398 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O b5 10. Nd5 Nxd5
Saint Louis Blitz 2017 – Round 3.5 – Dominguez Perez, Leinier – 0-1 – Nepomniachtchi, Ian – G15 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. a4 b6 10. Nd5 Nxd5
World Blitz 2006 – Round 15 – Livshits, Gaby – 0-1 – Polgar, Judit – G99 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O b6 10. h3 Bb7
World Blitz 2021 – Round 16.24 – Quparadze, Giga – 0-1 – Sjugirov, Sanan – G935 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O b5 10. a4 b4
World Rapid 2019 – Round 14.78 – Santos Ruiz, Miguel – 0-1 – Tran, Tuan Minh – G939 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. a4 b6 10. O-O Bb7

B91n — Najdorf

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.g3 e5 7.Nde2 Be7 8.Bg2 O-O

Eval: [+0.12]

Les coups candidats

9.O-O — 79.3% (900 parties)

Ambassadeurs : Wydornik, Robert (14x), Klewe, Wolfgang (14x), Kholmov, Ratmir D (7x), Egner, Michael (7x), Ciani, Daniele (6x), Corti, Horacio (6x), Boccia, Mattia Mario Prof (6x), Matulovic, Milan (5x)

9.a4 — 14.0% (159 parties)

Ambassadeurs : Ivanov, Alexander. (3x), Leniart, Arkadiusz (3x), Zvorykina, K. (2x), Bikova, E. (2x), Short, Nigel D (2x), Rosenhöfer, Thomas (2x), Santos Ruiz, Miguel (2x), Colbow, Collin (2x)

9.h3 — 5.6% (63 parties)

Ambassadeurs : Kuttner, Jaromir (3x), Rhodin, Bodo (1x), Joerg Helmut (1x), Mrva, Martin (1x), Hamalainen, Sami (1x), Rosen, Willy (1x), Maeder, Karl-Heinz (1x), Matulovic, Milan (1x)

9.Be3 — 0.7% (8 parties)

Ambassadeurs : Sueess, Franz (1x), Fragnière, Thierry (1x), Lukyanenko, Volodimir (1x), Rodriguez, Keith A (1x), Laffranchise, Lionel (1x), Savoca, Alfredo (1x), Baranowski, Tadeusz (1x), Cañamas Soler, José Vicente (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	9.O-O	9.a4	9.h3	9.Be3
<1800	29	90%	—	7%	3%
1800-2200	337	79%	12%	7%	1%
2200-2600	567	78%	16%	5%	1%
2600+	41	80%	17%	2%	—

Évolution par décennie (% des parties)

Décennie	N parties	9.O-O	9.a4	9.h3	9.Be3
1940s	1	100%	—	—	—
1950s	44	86%	14%	—	—
1960s	41	80%	17%	2%	—
1970s	37	73%	16%	8%	—
1980s	42	67%	21%	12%	—
1990s	79	73%	13%	13%	—
2000s	166	77%	11%	11%	—
2010s	498	82%	12%	4%	1%
2020s	227	78%	18%	3%	0%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
9.O-O	82%	78%	▼ -3.7%
9.a4	12%	18%	▲ +5.8%
9.h3	4%	3%	▼ -0.5%
9.Be3	1%	0%	▼ -1.0%

Joueurs célèbres

Champions du monde dans cette position

Anand, Viswanathan — 2 parties
Gukesh D — 2 parties
Carlsen, Magnus — 1 partie

Parties historiques

9.O-O — 79.3% (900 parties)

1949 — Vasiliev, Viktor A vs Lubienski, Tadeusz — 1/2-1/2 — Tbilisi GEO
1950 — Burkhardt, Erich vs Mueller, Claus — 1/2-1/2 — Soemmerda GER
1950 — Skold, Kent-Ake vs Reshevsky, Samuel — 0-1 — Dubrovnik CRO
1950 — Czerniak, Magdalena vs Pachman, Ludek — 1-0 — Venice ITA
1952 — Milic, Bozidar vs Muller, Kaden — 1-0 — Helsinki olm

9.a4 — 14.0% (159 parties)

1953 — Aronson, Benjamin Edward vs Furman Oman, Anze — 0-1 — Leningrad RUS
1956 — Enevoldsen, Jens vs Norman Hansen, Holger — 1/2-1/2 — Copenhagen DEN
1957 — Puc, Stojan vs Bogdanovic, Rajko — 0-1 — Sombor
1958 — Benko, Pal vs Fuster, Geza — 1-0 — Portoroz SLO
1959 — Zvorykina, K. vs Bikova, E. — 1-0 — Moskou wch-m

9.h3 — 5.6% (63 parties)

1965 — Rhodin, Bodo vs Joerg Helmut — 1-0 — Bamberg
1970 — Rosen, Willy vs Maeder, Karl-Heinz — 1/2-1/2 — FRG-ch12 corr7073
1975 — Zhuravliov, Valerij vs Rashkovsky, Nukhim N — 1-0 — Cheliabinsk tt
1977 — Janosevic, Dragoljub vs Bukic, Enver — 1/2-1/2 — Vrsac SRB
1980 — Svenn, Matti vs Svensson, Bengt 1960 — 1-0 — ?

9.Be3 — 0.7% (8 parties)

2017 — Sueess, Franz vs Fragnière, Thierry — 1/2-1/2 — ICCF
2017 — Laffranchise, Lionel vs Savoca, Alfredo — 1/2-1/2 — ICCF
2018 — Lukyanenko, Volodimir vs Rodriguez, Keith A — 1/2-1/2 — ICCF
2018 — Staniszewski, Jerzy vs Brzoza, Miroslaw — 1/2-1/2 — ICCF
2018 — Wölfelschneider, Peter vs Lehnhoff, Heinz-Georg — 1/2-1/2 — ICCF

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