A48h — Neo-King’s Indian: London System

1.d4 Nf6 2.Nf3 g6 3.Bf4 Bg7 4.Nbd2 * ● Trait aux Noirs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plan principal. Attaque sur le roi adverse resté au centre.

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

Côté adverse. Les fous enfermés en g7 et c8 et le roi resté au centre.

En contrepartie. Le roi n'est pas encore à l'abri et plusieurs pièces dorment encore (le fou f1 et les tours a1 et h1).

Plans. e4 (Centre d4+e4, menace e5, libère Bf1) ; h3 (Empêcher ...Bg4).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plan principal. Attaque sur le roi adverse resté au centre.

Atouts. Les Noirs s'appuient sur la paire de fous.

Côté adverse. Le fou enfermé en 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) ; ...c5 (Rupture) ; ...d5 (Rupture).

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	—	● f7→g6, h7→g6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● e5 (3v0), ● g5 (2v0)	—
Cases faibles	—	—
Centre	● d4 (1v0), ● e5 (3v0)	● d5 (1v0)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bf1	● Bf1 Non développé (mob. 0)
Bf4	● Bf4 Actif (mob. 7)
Bg7		● Bg7 Enfermé (mob. 2)
Bc8		● Bc8 Non développé (mob. 0)
Paire de fous	● Oui	● Oui
Non développées	3 (● 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	● c2-c3, ● d4-d5, ● e2-e3	● …c7-c6, ● …c7-c5, ● …d7-d6, ● …d7-d5, ● …e7-e6, ● …e7-e5

Partie
1922 London – Round 3 – Guillen Watson, Cesar Augusto – 0-1 – Euwe, Max – G8 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 d6 5. e4 O-O 6. Bd3 Nbd7 7. Qe2 Nh5 8. Be3 e5 9. dxe5 Nxe5 10. Nxe5 Bxe5
1922 London BCF Congress – Round 4 – Alekhine, Alexander – 1-0 – Euwe, Max – G6 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 c5 5. e3 d6 6. c3 Nc6 7. h3 O-O 8. Bc4 Re8 9. O-O e5 10. dxe5 Nxe5
1922 London ENG – Round ? – Watson, William N – 0-1 – Euwe, Max – G9 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 d6 5. e4 O-O 6. Bd3 Nbd7 7. Qe2 Nh5 8. Be3 e5 9. dxe5 Nxe5 10. Nxe5 Bxe5
1923 Northern Counties Premier – Round 7 – Holmes, Harry – 0-1 – Maroczy, Geza – G18 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 O-O 5. e4 d6 6. Be2 Nc6 7. d5 Nb8 8. c3 e5 9. Bg5 a5 10. Qc2 h6
1924 Leningrad – Round ? – Botvinnik, Mikhail – 1-0 – I Folga – G13 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 O-O 5. h3 b6 6. e4 Bb7 7. Bd3 d6 8. O-O Nbd7 9. Qe2 c5 10. c3 Qc7
1925 BCF Ch 18th – Round 7 – Moses, George Wyville – 0-1 – Atkins, Henry Ernest – G29 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 d5 5. h3 c5 6. c3 cxd4 7. cxd4 Nc6 8. e3 O-O 9. Rc1 Kh8 10. Be2 Ng8
1927 Moskou ch-URS – Round 16 – Makogonov, Vladimir – 1-0 – Kholodkevich, Khrisogon Lustinovich – G44 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 d5 5. h3 O-O 6. e3 c5 7. c3 b6 8. Bd3 Bb7 9. O-O Nbd7 10. a4 a6
1934 Sitges – Round 7 – Spielmann, Rudolf – 1-0 – Prins, Lodewijk – G43 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 d5 5. h3 O-O 6. e3 c5 7. c3 b6 8. Bd3 Bb7 9. Ne5 Nfd7 10. Ndf3 Nc6
1935 Warsaw olm – Round 3 – Romih, Max – 0-1 – Atkins, Henry Ernest – G10 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 d5 5. h3 b6 6. e3 Bb7 7. Bd3 Nbd7 8. Qe2 c5 9. c3 Ne4 10. O-O O-O
1936 Mar del Plata – Round 5 – Balparda, Julio – 0-1 – Flores Alvarez, Rodrigo – G37 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 d5 5. c3 Nbd7 6. Ne5 Nh5 7. Nxd7 Nxf4 8. Nc5 O-O 9. g3 b6 10. Ncb3 Ne6
1938 Paris L'Echiquier – Round 5 – Romih, Max – 0-1 – Joukowsky – G14 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 d6 5. e4 O-O 6. Bd3 Nh5 7. Bg5 c5 8. c3 h6 9. Be3 Qb6 10. Nc4 Qc7
1945 Mar del Plata – Round 1 – Hounie Fleurquin, Carlos – 0-1 – Pelikán, Jiří – G5 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 O-O 5. e3 d6 6. h3 Nc6 7. Bh2 Re8 8. Bb5 Bd7 9. O-O a6 10. Ba4 Nxd4
1948 JUG Ch – Round 5 – Trifunovic, Petar – 1/2-1/2 – Janosevic, Dragoljub – G19 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 d6 5. h3 c5 6. e3 Nc6 7. c3 cxd4 8. exd4 O-O 9. Be2 e5 10. dxe5 dxe5
1948 Saltsjobaden tt – Round 1 – Krogdahl, Arne – 0-1 – Ojanen, Kaarle S – G11 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 d5 5. e3 O-O 6. Bd3 c5 7. c3 Nbd7 8. h3 b6 9. Qe2 Bb7 10. g4 Ne4
1949 Santa Fe – Round 5 – Garcia Vera, Oscar – 0-1 – Rossetto, Hector – G13 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 d5 5. h3 c5 6. e3 Qb6 7. Qc1 cxd4 8. exd4 Nc6 9. c3 Bf5 10. g4 Be4
1950 URS-ch18 – Round 14 – Bondarevsky, Igor – 1/2-1/2 – Liublinsky, Victor – G1 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 O-O 5. h3 d5 6. e3 c5 7. c3 Nbd7 8. Bd3 b6 9. O-O Bb7 10. Qe2 Ne4
1951 Mar del Plata zt – Round 11 – Eliskases, Erich – 0-1 – Bolbochan, J. – G111 1. Nf3 Nf6 2. d4 g6 3. Bf4 Bg7 4. Nbd2 O-O 5. e4 d6 6. h3 Nc6 7. c3 e5 8. dxe5 dxe5 9. Bh2 Nh5 10. Bb5 Bd7
1952 Budapest – Round 17 – O'Kelly, Albéric de Galway – 1/2-1/2 – Geller, Efim P – G149 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 O-O 5. e4 d6 6. Bd3 Nbd7 7. O-O Nh5 8. Bg5 h6 9. Bh4 Nf4 10. Bc4 g5
1952 ITA-ch15 – Round 9 – Mondaini, Giulio Cesare – 1-0 – Nestler, Vincenzo – G45 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 d5 5. e3 Nbd7 6. Bd3 c5 7. c3 a6 8. a4 b6 9. O-O Nh5 10. Bg5 h6
1953 Candidats Tournament – Round 20 – Smyslov, Vladimir – 1/2-1/2 – Boleslavsky, Isaac – G132 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 d6 5. h3 O-O 6. e3 c5 7. Be2 Nc6 8. Bh2 cxd4 9. exd4 Bd7 10. O-O Rc8
1953 Candidats Tournament – Round 27 – Smyslov, Vladimir – 1/2-1/2 – Gligoric, Sofija – G178 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 d6 5. h3 O-O 6. e3 c5 7. Be2 Nc6 8. Bh2 b6 9. O-O Bb7 10. c3 Qd7
1953 Hoogovens – Round 3 – Kramer, Hanspeter – 1/2-1/2 – Toran Albero, Roman – G23 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 d5 5. h3 c5 6. c3 cxd4 7. cxd4 Nc6 8. e3 O-O 9. Be2 Bf5 10. O-O Rc8
1954 CSR Ch – Round 16 – Pithart, Frantisek – 0-1 – Weiner, Milan – G132 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 d5 5. c3 O-O 6. e3 Nbd7 7. h3 c5 8. Bd3 Re8 9. g4 b6 10. Qe2 Bb7
1954 CSR Ch – Round 9 – Pithart, Frantisek – 1/2-1/2 – Alster, Ladislav – G74 1. Nf3 Nf6 2. d4 g6 3. Bf4 Bg7 4. Nbd2 O-O 5. e4 d6 6. c3 Nbd7 7. Bg3 c6 8. Be2 b5 9. a4 Qb6 10. axb5 cxb5
1954 URS Ch sf Gorky – Round 15 – Bondarevsky, Igor – 1/2-1/2 – Borisenko, Georgy K – G15 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 O-O 5. e4 d6 6. Bd3 Nc6 7. O-O Nh5 8. Be3 e5 9. dxe5 dxe5 10. Bc5 Re8
1955 Buenos Aires CA – Round 2 – Guimard, Carlos E – 0-1 – Donner, Jan-Hein – G19 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 d6 5. c3 O-O 6. e3 Nbd7 7. Bc4 Qe8 8. O-O e5 9. Bg3 Kh8 10. Qb3 h6
1955 Gothenburg Interzonal – Round 13 – Bisguier, Arthur B – 0-1 – Geller, Efim P – G120 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 d5 5. c3 O-O 6. h3 c5 7. e3 cxd4 8. cxd4 Nc6 9. Be2 Qb6 10. Qb3 Bf5
1956 URS Ch sf – Round ? – Kotov, Alexander. – 1/2-1/2 – Zilber, Israel – G66 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 O-O 5. h3 d6 6. e3 Nc6 7. c3 Qe8 8. Bh2 e5 9. Bb5 Nd7 10. O-O Qe7
1957 EU Team Ch – Round 3 – Smyslov, Vladimir – 1/2-1/2 – Gligoric, Sofija – G25 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 d6 5. h3 Nc6 6. e3 O-O 7. Bh2 Qe8 8. Be2 e5 9. dxe5 Nxe5 10. Nxe5 dxe5
1957 Moskou ch-URS – Round 19 – Bronstein, David I – 0-1 – Gurgenidze, Bukhuti – G188 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 c5 5. e3 Nc6 6. c3 cxd4 7. cxd4 O-O 8. h3 d6 9. Bc4 e5 10. dxe5 dxe5
1957 New York ch-USA – Round 11 – Bisguier, Arthur B – 0-1 – Berliner, Hans – G65 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 O-O 5. e4 d6 6. c3 Nc6 7. Bc4 e5 8. dxe5 dxe5 9. Nxe5 Nxe5 10. Bxe5 Nxe4
1958 Munich olm fin-A – Round 8 – Bisguier, Arthur B – 0-1 – Beni, Alfred – G45 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 d5 5. e3 O-O 6. Bd3 b6 7. Ne5 Nfd7 8. h4 Nxe5 9. Bxe5 Bxe5 10. dxe5 h5
1958 Torneo de las Americas 1st – Round 12 – Bisguier, Arthur B – 0-1 – Najdorf, Miguel – G64 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 O-O 5. e4 d6 6. c3 Nh5 7. Be3 e5 8. Bc4 Nc6 9. dxe5 Nxe5 10. Nxe5 dxe5
1959 Candidats Tournament – Round 15 – Keres, Paul Petrovich – 0-1 – Fischer, Robert J – G57 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 c5 5. c3 cxd4 6. cxd4 d5 7. Bxb8 Rxb8 8. Qa4+ Bd7 9. Qxa7 Ne4 10. e3 Nxd2
1959 Tbilisi ch-URS – Round 1 – Keres, Paul – 1-0 – Polugaevsky, Lev – G3 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 O-O 5. e4 d6 6. c3 Nc6 7. Bb5 Nd7 8. O-O e5 9. Bg5 Qe8 10. Rc1 a6
1959 Tbilisi ch-URS – Round 10 – Keres, Paul – 1-0 – Bronstein, David I – G82 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 d5 5. e3 O-O 6. Be2 c5 7. O-O cxd4 8. exd4 Nc6 9. c3 Nh5 10. Be3 Qc7
1959 UKR Ch – Round 1 – ? – 0-1 – Geller, Efim P – G4 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 c5 5. e3 cxd4 6. exd4 Nc6 7. Nb3 O-O 8. Be2 a5 9. a4 d6 10. O-O Be6
1960 Sao Paulo zt – Round 7 – Recalde, Eleuterio – 1/2-1/2 – Estrada Degrandi, Walter – G38 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 O-O 5. e4 d6 6. Bc4 Nbd7 7. h3 e5 8. dxe5 dxe5 9. Nxe5 Nxe5 10. Bxe5 Nxe4
1961 Baku ch-URS – Round 19 – Bronstein, David I – 1-0 – Savon, Vladimir – G174 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 O-O 5. e4 d6 6. h3 c5 7. dxc5 dxc5 8. e5 Nd5 9. Bh2 b6 10. Bd3 Bb7
1961 Belgrade – Round 1 – Keres, Paul – 1/2-1/2 – Matulovic, Milan – G12 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 O-O 5. e4 d6 6. c3 Nbd7 7. Bc4 c6 8. O-O Nxe4 9. Nxe4 d5 10. Bd3 dxe4
1961 Buenos Aires ch-ARG – Round 8 – Benko, Francisco – 1/2-1/2 – Scanavino, Eduardo – G52 1. Nf3 Nf6 2. d4 g6 3. Bf4 Bg7 4. Nbd2 d5 5. e3 O-O 6. Bd3 c5 7. c3 Nc6 8. h3 Nd7 9. O-O e5 10. dxe5 Ndxe5
1961 Palanga Baltic Ch – Round ? – Mikenas, Vladas – 1/2-1/2 – Lapienis, Donatas – G34 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 d6 5. e4 O-O 6. h3 Nbd7 7. Bc4 e5 8. dxe5 dxe5 9. Bh2 Qe7 10. Qe2 Nh5
1961 USA Ch Open 62th – Round 4 – Gersch, Charles – 1/2-1/2 – Byrne, Robert E – G11 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 Nh5 5. Be5 f6 6. Bg3 Nxg3 7. hxg3 c5 8. c3 cxd4 9. cxd4 d5 10. e4 e6
1961 Zagreb – Round 12 – Sokolov, Vladimir – 1/2-1/2 – Stupica, Janez – G101 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 d5 5. e3 O-O 6. Bd3 Nbd7 7. O-O c5 8. c3 b6 9. b4 Nh5 10. Bg5 c4
1962 Marianske Lazne – Round 5 – Lokvenc, Josef – 0-1 – Marsalek, Josef – G35 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 d5 5. h3 c5 6. c3 Qb6 7. Qb3 Nc6 8. e3 O-O 9. Be2 Re8 10. O-O Bf5
1962 Varna olm – Round 7 – Keres, Paul Petrovich – 1/2-1/2 – Gheorghiu, Florin – G301 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 c5 5. c3 cxd4 6. cxd4 O-O 7. e3 Nc6 8. h3 d6 9. Bc4 Bf5 10. O-O Rc8
1963 Alekhine Memorial – Round 8 – Keres, Paul – 0-1 – Liberzon, Vladimir M – G54 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 O-O 5. e3 d6 6. Bc4 b6 7. O-O Bb7 8. Qe2 c5 9. c3 Nbd7 10. h3 Ne4
1963 Havanna PANAM – Round 10 – Letelier Martner, Rene – 1/2-1/2 – Cobo Arteaga, Eldis – G13 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 d5 5. e3 O-O 6. h3 c5 7. c3 Nc6 8. Be2 Nd7 9. O-O e5 10. dxe5 Ndxe5
1964 Burevestnik CC Ch – Round ? – Volovich, Anatoly – 1-0 – Roshal, Alexander – G3 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 O-O 5. e4 d6 6. h3 Nbd7 7. Bh2 c5 8. e5 dxe5 9. dxe5 Nd5 10. Ne4 Nc7
1964 Chigorin Memorial – Round 5 – Bondarevsky, Igor – 0-1 – Gheorghiu, Florin – G31 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 c5 5. e3 b6 6. c3 O-O 7. h3 d6 8. Bc4 Ba6 9. O-O Bxc4 10. Nxc4 Na6
1965 POL Ch 22th – Round 3 – Schinzel, Wladyslaw – 1-0 – Brzozka, Stefan – G13 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 d5 5. h3 O-O 6. e3 c5 7. c3 Nc6 8. dxc5 a5 9. a4 Re8 10. Bb5 Bd7
1965 Tallinn ch-URS – Round 1 – Liavdansky, Vladimir – 1/2-1/2 – Taimanov, Mark E – G70 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 O-O 5. e3 Nh5 6. Bg5 d6 7. Bd3 Qe8 8. h3 e5 9. dxe5 dxe5 10. g4 Nf6
1966 Asztalos Memorial 9th – Round 14 – Csom, Istvan – 1-0 – Barczay, Laszlo – G73 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 c5 5. c3 b6 6. e3 O-O 7. h3 Bb7 8. Be2 d6 9. O-O Nbd7 10. Bh2 Bh6
1966 La Habana olm prel – Round 7 – Roux Cabral, Luis – 0-1 – Walther, Edgar – G110 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 c5 5. c3 cxd4 6. Nxd4 O-O 7. e4 d5 8. e5 Nh5 9. g3 Nc6 10. Nxc6 bxc6
1966 Panamerican – Round ? – Roux Cabral, Fausto – 0-1 – Garcia Martinez, Silvino – G77 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 O-O 5. e3 b6 6. Bd3 Bb7 7. c3 d6 8. Qc2 Nbd7 9. h4 c5 10. O-O-O Rc8
1966 WchTJ U26 fin-A – Round 11 – Vadasz, Laszlo – 1/2-1/2 – Buchman E – G64 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 c5 5. e3 O-O 6. c3 b6 7. h3 d6 8. Bc4 Ba6 9. Bxa6 Nxa6 10. O-O Nd7
1967 Skopje – Round 15 – Panov, Vladimir – 0-1 – Sofrevski, Jovan – G116 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 O-O 5. e3 b6 6. h3 Bb7 7. Bc4 d6 8. O-O Nbd7 9. Qe2 a6 10. Bh2 Qe8
1967 US Open – Round 4 – Meyer, John – 0-1 – Byrne, Robert E – G11 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 d6 5. e4 O-O 6. c3 Nc6 7. d5 Nb8 8. Bc4 c6 9. O-O Nbd7 10. dxc6 bxc6
1968 Bristol ch-BCF – Round 3 – Bonner, Gerald – 0-1 – Littlewood, Norman – G35 1. d4 Nf6 2. Bf4 g6 3. Nf3 Bg7 4. Nbd2 O-O 5. e3 d6 6. Bc4 Nbd7 7. Qe2 h6 8. h3 Re8 9. O-O-O d5 10. Bb3 c5
1968 Moscow – Round 1 – Taimanov, Mark E – 0-1 – Smyslov, Vladimir – G5 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 O-O 5. c3 d6 6. h3 b6 7. e4 c5 8. Bc4 Nc6 9. O-O Bb7 10. Qe2 a6
1970 Vinkovci – Round 11 – Bronstein, David Ionovich – 1-0 – Bertok, Mario – G54 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 d5 5. e3 c5 6. c3 Qb6 7. Qb3 O-O 8. Qxb6 axb6 9. Bc7 Nfd7 10. Bb5 Na6
1973 Leningrad Interzonal – Round 15 – Quinteros, Miguel Angel – 0-1 – Uhlmann, Wolfgang – G143 1. Nf3 g6 2. d4 Nf6 3. Bf4 Bg7 4. Nbd2 O-O 5. e4 d6 6. Be2 Nbd7 7. c3 Nh5 8. Be3 e5 9. Qc2 Qe8 10. Ng1 f5
42. Olympiad 2016 – Round 6.4 – Radjabov, Teimour – 1/2-1/2 – Banikas, Hristos – G444 1. d4 Nf6 2. Bf4 g6 3. Nf3 Bg7 4. Nbd2 O-O 5. c3 d6 6. h3 b6 7. e4 Bb7 8. Qc2 e5 9. Be3 Nbd7 10. Bd3 Re8
Amber-rapid 6th 1997 – Round 7 – Ljubojevic, Ljubomir – 1/2-1/2 – Piket, Jeroen – G36 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 O-O 5. e3 d6 6. h3 c5 7. c3 b6 8. Bc4 Bb7 9. O-O Nbd7 10. Qe2 Rc8
URS Team Ch Moscow 1972 – Round ? – Taimanov, Mark E – 1/2-1/2 – Stein, Leonid – G31 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 O-O 5. c3 d6 6. h3 b6 7. e3 Bb7 8. Be2 c5 9. O-O Nc6 10. a4 cxd4
World Blitz 2023 – Round 16.4 – Dubov, Daniil – 1-0 – Abdusattorov, Nodirbek – G926 1. d4 Nf6 2. Bf4 g6 3. Nf3 Bg7 4. Nbd2 d6 5. h3 O-O 6. e4 Nc6 7. c3 e5 8. dxe5 dxe5 9. Be3 Qe7 10. Bc4 h6

A48h — London System

1.d4 Nf6 2.Nf3 g6 3.Bf4 Bg7 4.Nbd2

Les coups candidats

4…O-O — 38.3% (713 parties)

Ambassadeurs : Taimanov, Mark (7x), Prevenios, Michail (7x), Kargoll, Peter (5x), Feibert, Fred (5x), Fronczek, Heinrich (5x), Meixner, Ferenc (5x), Beyen, Roland (4x), Steinhagen, Dietrich (4x)

4…d6 — 25.5% (475 parties)

Ambassadeurs : Koller, Hubert (5x), Lueders, Guenter (5x), Smyslov, Vladimir (3x), Rey, Fabrice (3x), Kantorik, Marian (3x), Vavra, Jan (3x), Levomaki, Rikumatti (3x), Meixner, Ferenc (3x)

4…d5 — 25.1% (468 parties)

Ambassadeurs : Vavra, Jan (5x), Beinenson, Katsiaryna (4x), Bronstein, David I (3x), Beyen, Roland (3x), Majzik, Levente (3x), Lunkiewicz, Dariusz (3x), Maruejols, Claude (3x), Quimi, Marco (3x)

4…c5 — 8.5% (159 parties)

Ambassadeurs : Roux Cabral, Luis (2x), Keres, Paul Petrovich (2x), Gheorghiu, Florin (2x), Geller, Efim P. (2x), Bronstein, David I (2x), Westerinen, Heikki M.J. (2x), McCarthy, Brian (2x), Hart, Clifford (2x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	4…O-O	4…d6	4…d5	4…c5
<1800	75	36%	20%	32%	9%
1800-2200	827	36%	28%	28%	5%
2200-2600	435	42%	21%	21%	14%
2600+	9	89%	11%	—	—

Évolution par décennie (% des parties)

Décennie	N parties	4…O-O	4…d6	4…d5	4…c5
1920s	13	23%	23%	38%	8%
1930s	4	—	25%	75%	—
1940s	8	12%	25%	38%	25%
1950s	34	32%	26%	24%	18%
1960s	46	35%	13%	28%	20%
1970s	26	38%	31%	23%	8%
1980s	100	39%	23%	23%	13%
1990s	449	39%	29%	22%	7%
2000s	533	38%	24%	27%	8%
2010s	559	38%	26%	26%	7%
2020s	89	44%	25%	20%	10%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
4…O-O	38%	44%	▲ +5.5%
4…d6	26%	25%	▼ -1.2%
4…d5	26%	20%	▼ -6.1%
4…c5	7%	10%	▲ +3.0%

Joueurs célèbres

Champions du monde dans cette position

Smyslov, Vladimir — 4 parties
Euwe, Max — 3 parties
Botvinnik, Mikhail — 2 parties
Alekhine, Alexander — 1 partie
Ju, Wenjun — 1 partie

Parties historiques

4…O-O — 38.3% (713 parties)

1923 — Holmes, Harry vs Maroczy, Geza — 0-1 — Liverpool
1924 — Botvinnik, Mikhail vs I Folga — 1-0 — Leningrad RUS
1924 — Botvinnik, Mikhail vs Folga, I. — 1-0 — Leningrad 2nd cat
1945 — Hounie Fleurquin, Carlos vs Pelikán, Jiří — 0-1 — Mar del Plata ARG
1950 — Bondarevsky, Igor vs Liublinsky, Victor — 1/2-1/2 — Moscow RUS

4…d6 — 25.5% (475 parties)

1922 — Watson, William N vs Euwe, Max — 0-1 — London ENG
1922 — Guillen Watson, Cesar Augusto vs Euwe, Max — 0-1 — London ENG
1926 — Kupchik, Abraham vs Carlos Torre Repetto — 1/2-1/2 — Chicago, IL USA
1938 — Romih, Max vs Joukowsky — 0-1 — Paris FRA
1944 — Dus Chotimirsky, Fedor vs Lilienthal, Andor — 0-1 — Ivanovo

4…d5 — 25.1% (468 parties)

1922 — Schlage, William vs Gruber, Sandor — 1-0 — Bad Oeynhausen GER
1925 — Moses, George Wyville vs Atkins, Henry Ernest — 0-1 — Stratford-upon-Avon
1927 — Anderson, Erik vs Carls, Carl — 1-0 — Olympiad London ENG
1927 — Makogonov, Vladimir vs Kholodkevich, Khrisogon Lustinovich — 1-0 — Moskou ch-URS
1929 — Skalicka, Karel vs Tereba, R. — 0-1 — Prague CZE

4…c5 — 8.5% (159 parties)

1922 — Alekhine, Alexander vs Euwe, Max — 1-0 — London ENG
1940 — Stephens L Walter vs Hanauer, Milton Loeb — 0-1 — Ventnor City
1947 — Batuev, Anton vs Kopylov, Nikita — 1/2-1/2 — Leningrad RUS
1952 — Soules, Jorge vs Patt Rubinstein, J. — 0-1 — Rosario ARG
1954 — Bronstein, David I vs Geller, Efim P. — 1/2-1/2 — Moscow RUS

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