A48 — London System

1. d4 Nf6 2. Bf4 g6 3. e3 Bg7 4. Nf3 O ○ Trait aux Blancs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plan principal. Exploiter la case forte e5….

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.

En contrepartie. Le roi n'est pas encore à l'abri et plusieurs pièces dorment encore (le cavalier b1, le fou f1 et les tours a1 et h1).

Plans. Nbd2 (Développer Nb1) ; Be2 (Fou actif (mobilité 5), Développer f1,) ; 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. Plusieurs pièces dorment encore (le cavalier b8, le fou c8 et la tour a8).

Plans. ...d6 (Libérer Bc8) ; ...Nc6 (Développer Nb8) ; ...c5 (Rupture) ; ...d5 (Rupture) ; ...e6 (Rupture).

Avantages

Faiblesses adverses

Diagonale active

Plans

Base Masters : Blancs 31.3%, Nulles 40.6%, Noirs 28.1%.

Coups candidats

auto

Analyse coup par coup — 7 demi-coups commentés

1.d4 Avancée centrale — contrôle c5, e5. Prépare c4, e4, Nc3.
1…Nf6 Contrôle e4, d5.
2.Bf4 Contrôle c5, e5.
2…g6 Prépare le fianchetto du Fou (Bg7).
3.e3 Avancée centrale — contrôle d4, f4. Prépare d4, Bd3, Be2.
3…Bg7 Contrôle e4, d5, f5.
4.Nf3 Contrôle c4, c5, e5.

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● f2→e3, e3→d4	● f7→g6, h7→g6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● e5 (3v0), ● g5 (2v0)	—
Cases faibles	—	—
Centre	● d4 (3v0), ● e5 (3v0)	● d5 (1v0), ● e4 (1v0)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bf1	● Bf1 Non développé (mob. 5)
Bf4	● Bf4 Actif (mob. 6)
Bg7		● Bg7 Enfermé (mob. 2)
Bc8		● Bc8 Non développé (mob. 0)
Paire de fous	● Oui	● Oui
Non développées	4 (● b1, ● f1, ● 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	semi-ouvert
Ruptures	● c2-c3, ● d4-d5, ● e3-e4	● …c7-c6, ● …c7-c5, ● …d7-d6, ● …d7-d5, ● …e7-e6, ● …e7-e5

Partie
10. Tal Mem 2016 – Round 9.5 – Tomashevsky, Evgeny – 1/2-1/2 – Svidler, Peter – G38 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. c3 d6 6. h3 b6 7. Be2 c5 8. O-O Bb7 9. Bh2 Nbd7 10. a4 a6
1931 Praag ol – Round 10 – Betbeder Matibet, Louis – 0-1 – Helling, Karl – G2 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. Bc4 d5 6. Bd3 c5 7. c3 Nc6 8. h3 Ne4 9. Nbd2 f5 10. Ne5 cxd4
1936 Muenchen ol – Round 11 – Romih, Max – 0-1 – Richter, Kurt P – G27 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. Nbd2 c5 6. c3 Nc6 7. h3 b6 8. Bd3 Bb7 9. Qe2 cxd4 10. exd4 d6
1936 Podebrady – Round 1 – Alekhine, Alexander – 1/2-1/2 – Richter, Kurt P – G12 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. Nbd2 c5 6. c3 Nc6 7. dxc5 Nh5 8. Bg3 b6 9. cxb6 Qxb6 10. Qb3 Qd8
1938 URS Ch, semi final – Round 1 – Romanovsky, Pjotr – 1-0 – Kasparian, Genrikh – G37 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. Nbd2 d6 6. Bc4 Nbd7 7. O-O Nh5 8. Bg5 h6 9. Bh4 Bf6 10. g4 Ng7
1939 Leningrad/Moscow – Round 9 – Belavenets, Sergey – 0-1 – Kan, Ilya A – G66 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. Nbd2 d6 6. Bc4 Nc6 7. Qe2 Nb4 8. Bb3 Be6 9. O-O Bxb3 10. Nxb3 Qd7
1947 URS Ch, semi final – Round 1 – Batuev, Anton – 0-1 – Bronstein, David I – G10 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. h3 b6 6. Nbd2 Bb7 7. Bd3 d6 8. O-O Nbd7 9. Qe2 a6 10. e4 Nh5
1949 URS Ch, semi final – Round 1 – Kan, Ilya A – 1-0 – Cherepkov, Alexander V – G46 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. Nbd2 d5 6. Bd3 c5 7. c3 Nc6 8. O-O Nd7 9. Bb5 Qb6 10. Qa4 a6
1950 ITA Ch – Round 7 – Engalicev, Nicolas – 0-1 – Primavera, Giuseppe – G7 1. Nf3 Nf6 2. d4 g6 3. Bf4 Bg7 4. e3 O-O 5. Nbd2 d6 6. Bc4 Nfd7 7. O-O h6 8. c3 e5 9. Bg3 c6 10. Bb3 Qe7
1950 Sorrento ch ITA – Round 9 – Engalicew, Nicola – 1-0 – Paoli, Enrico – G21 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. c3 b6 6. Nbd2 Bb7 7. Bc4 d6 8. O-O Nbd7 9. Qb3 e6 10. Rad1 Qe7
1951 Moskou ch-URS – Round 1 – Bondarevsky, Igor – 1-0 – Aronin, Lev – G84 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. Nbd2 c5 6. c3 b6 7. Bd3 Ba6 8. Bxa6 Nxa6 9. O-O Qc8 10. Qe2 d5
1952 Budapest – Round 15 – Benko, Pal – 1/2-1/2 – Geller, Efim P – G134 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. Nbd2 c5 6. c3 d5 7. Be2 Nc6 8. Ne5 Nd7 9. Nxd7 Bxd7 10. O-O cxd4
1952 Moskou ch-URS – Round 1 – Ilivitsky, Georgy A – 0-1 – Geller, Efim P – G89 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. Nbd2 c5 6. c3 cxd4 7. cxd4 Nc6 8. Be2 d5 9. O-O Qb6 10. Qb3 Qxb3
1952 POL-ch10 – Round 13 – Plater, Kazimierz – 1/2-1/2 – Ciejka, Tadeusz – G98 1. Nf3 Nf6 2. d4 g6 3. Bf4 Bg7 4. e3 O-O 5. Nbd2 c5 6. c3 b6 7. Bd3 Bb7 8. Qe2 Nc6 9. O-O cxd4 10. exd4 Nh5
1953 URS-training – Round 2 – Bondarevsky, Igor – 0-1 – Smyslov, Vladimir – G9 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. Nbd2 c5 6. c3 b6 7. Bd3 Nc6 8. O-O d6 9. h3 a6 10. Qe2 cxd4
1953 Wenen AUT-URS – Round 2.4 – Mueller, Hans – 1/2-1/2 – Averbakh, Yuri L – G7 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. h3 c5 6. c3 d5 7. Nbd2 Nc6 8. Bd3 cxd4 9. exd4 Bf5 10. Qe2 Nh5
1954 Bucharest – Round 16 – Sandor, Bela – 1/2-1/2 – Korchnoi, Viktor – G140 1. Nf3 Nf6 2. d4 g6 3. Bf4 Bg7 4. e3 O-O 5. Nbd2 d5 6. h3 c5 7. c3 Nfd7 8. Be2 Nc6 9. O-O e5 10. dxe5 Ndxe5
1954 Bucharest – Round 4 – Voiculescu, Paul – 0-1 – Nezhmetdinov, Rashid – G47 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. Nbd2 Nc6 6. Be2 d6 7. O-O Nd7 8. c3 e5 9. Bg3 f5 10. h3 e4
1954 Hungary Ch – Round 17 – Sandor, Balazs – 0-1 – Dely, Peter – G52 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. Nbd2 c5 6. c3 cxd4 7. exd4 Nc6 8. h3 d6 9. Be2 e5 10. dxe5 dxe5
1954 It – Round 1 – Vlagsma, Chris – 1/2-1/2 – Kramer, Haije – G1 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. Bd3 d6 6. Nbd2 Nbd7 7. h3 Re8 8. e4 e5 9. dxe5 dxe5 10. Be3 Nh5
1954 URS Team Ch – Round 8 – Kan, Ilya A – 1/2-1/2 – Aronin, Lev – G142 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. Nbd2 d5 6. c3 c6 7. Bd3 Bg4 8. Qc2 Nbd7 9. h3 Bxf3 10. Nxf3 c5
1955 Mar del Plata – Round 12 – Rossetto, Hector – 0-1 – Panno, Oscar – G82 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. Nbd2 b6 6. Be2 Bb7 7. O-O d6 8. h3 c5 9. c3 Nc6 10. a4 Rb8
1955 POL-URS Lodz POL – Round ? – Bondarevsky, Igor – 1-0 – Gromek, Jozef – G7 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. Nbd2 c5 6. Bd3 Nc6 7. c3 Nh5 8. Bg5 b6 9. d5 Nb8 10. e4 d6
1955 Poland ch13 – Round 13 – Pytlakowski, Andrzej – 1-0 – Gromek, Jozef – G42 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. Nbd2 d5 6. c3 c5 7. Bd3 Nc6 8. O-O Re8 9. Re1 Nh5 10. Bg5 Qd6
1956 URS Ch sf – Round ? – Kotov, Alexander. – 0-1 – Byvshev, Vasily – G65 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. h3 d6 6. Nbd2 Nc6 7. Bh2 Nd7 8. c3 e5 9. Bb5 Ncb8 10. O-O Qe7
1957 URS Ch, semi final – Round 17 – Kotov Lundqvist, Alex – 0-1 – Nikolaevsky, Yuri V – G153 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. Nbd2 d6 6. h3 Nbd7 7. c3 c5 8. Be2 b6 9. O-O Bb7 10. a4 a6
1958 UKR Ch – Round 9 – Platonov, Igor V – 1/2-1/2 – Kots, Yuri I – G40 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. Nbd2 d5 6. Bd3 c5 7. c3 cxd4 8. exd4 Nh5 9. Bg3 Nc6 10. O-O Nxg3
1959 Dresden – Round 5 – Florian, Tibor – 1/2-1/2 – Geller, Efim P – G39 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. Nbd2 c5 6. c3 cxd4 7. cxd4 Nc6 8. Bc4 d5 9. Be2 Nh5 10. Bg5 h6
1959 Tbilisi ch-URS – Round 4 – Kholmov, Ratmir D – 0-1 – Gufeld, Eduard – G30 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. Nbd2 c5 6. c3 cxd4 7. exd4 Nc6 8. Be2 d6 9. h3 Re8 10. Nc4 Be6
1960 Leipzig olm fin-A – Round 10 – Portisch, Lajos – 1/2-1/2 – Uhlmann, Wolfgang – G180 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. h3 c5 6. c3 Qb6 7. Qb3 Nc6 8. Nbd2 Qxb3 9. axb3 d6 10. dxc5 dxc5
1960 Leipzig olm fin-A – Round 4 – Bisguier, Arthur B – 1-0 – Bertok, Mario Jr. – G68 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. Nbd2 d5 6. Bd3 c5 7. c3 Qb6 8. Rb1 Nc6 9. h3 Re8 10. O-O Bf5
1960 Leipzig olm prel – Round 6 – Fred, Aatos – 1/2-1/2 – Vukcevich, Milan – G25 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. Nbd2 c5 6. c3 cxd4 7. cxd4 Nc6 8. Bc4 d6 9. O-O Nh5 10. Bg5 h6
1960 Santa Fe – Round ? – Rossetto, Hector – 1/2-1/2 – Taimanov, Mark E – G25 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. Nbd2 d6 6. c3 Nc6 7. h3 Qe8 8. g4 e5 9. dxe5 dxe5 10. Bg5 Be6
1961 Budapest ch-HUN – Round 1 – Bilek, Istvan – 1/2-1/2 – Kluger, Gyula – G57 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. h3 c5 6. c3 Qb6 7. Qb3 Qxb3 8. axb3 cxd4 9. exd4 d6 10. Nbd2 Nc6
1961 GBR Ch 48th – Round 7.4 – Franklin, Michael J – 1-0 – Hollis, Adrian – G56 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. Nbd2 d6 6. h3 c5 7. c3 Nc6 8. dxc5 dxc5 9. e4 b6 10. Be2 Bb7
1961 Zagreb – Round 16 – Sokolov, Vladimir – 0-1 – Marovic, Drazen – G130 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. Nbd2 d6 6. Bc4 Nbd7 7. c3 Qe8 8. h3 e5 9. dxe5 Nxe5 10. Nxe5 dxe5
1963 Leningrad ch-URS – Round 1 – Bondarevsky, Igor – 0-1 – Bronstein, David I – G60 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. Nbd2 b6 6. c3 c5 7. h3 d6 8. Be2 Ba6 9. Bxa6 Nxa6 10. O-O Qd7
1963 Sochi – Round 8 – Bilek, Istvan – 1-0 – Bukic, Enver – G49 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. c3 b6 6. a4 a5 7. Na3 d6 8. h3 Nbd7 9. Be2 Bb7 10. O-O Ne4
1965 Belgrade – Round 12 – Sokolov, Vladimir – 0-1 – Rakic, Tomislav – G66 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. Nbd2 d6 6. Bc4 Nc6 7. O-O Nh5 8. Bg5 Kh8 9. c3 f6 10. Bh4 e5
1965 New York ch-USA – Round 1 – Bisguier, Arthur B – 1/2-1/2 – Byrne, Ray – G2 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. Nbd2 c5 6. c3 b6 7. Be2 Nc6 8. h3 Bb7 9. O-O d5 10. Rb1 Nd7
1966 Hoogovens 28th – Round 11 – Filip, Marius Liviu – 1/2-1/2 – Ivkov, Borislav – G30 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. Nbd2 d6 6. c3 b6 7. Be2 Bb7 8. h3 Nbd7 9. O-O Nd5 10. Bh2 e5
1966 La Habana olm fin-B – Round 7 – Prameshuber, Alexander – 1-0 – Mazzoni, Guy – G27 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. Nbd2 d6 6. h3 c5 7. c3 Nc6 8. Be2 Qe8 9. Bh2 Nd7 10. O-O e5
1966 La Habana olm prel – Round 2 – Holmes, Aaron J – 0-1 – Malich, Burkhard, Dr. – G49 1. d4 Nf6 2. Bf4 g6 3. Nf3 Bg7 4. e3 O-O 5. c3 b6 6. Nbd2 c5 7. h3 d6 8. Bc4 Bb7 9. O-O Nbd7 10. Re1 Qe8
1967 Oxford ch-BCF – Round 11 – Bonner, Gerald – 1/2-1/2 – Penrose, Justin – G97 1. d4 Nf6 2. Bf4 g6 3. Nf3 Bg7 4. e3 O-O 5. Bc4 d6 6. O-O Nbd7 7. Re1 Qe8 8. e4 e5 9. dxe5 dxe5 10. Bg5 h6
1967 POL Ch 24th – Round 7 – Sliwinski, Henryk – 1/2-1/2 – Schmidt, Wlodzimierz – G14 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. h3 d6 6. c3 b6 7. Be2 Bb7 8. O-O c5 9. a4 e6 10. Nbd2 Nbd7
1968 Churchill Memorial Open 16th – Round 4 – Franklin, Michael J – 1-0 – Ghitescu, Theodor – G7 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. Nbd2 b6 6. h3 c5 7. c3 d6 8. Rc1 Bb7 9. Bc4 Nc6 10. O-O Qe8
1968 Lugano olm - Round 1 - McAlpine, Kenneth B - 0-1 - Matulovic, Milan - G351 1. d4 Nf6 2. Bf4 g6 3. e3 Bg7 4. Nf3 O-O 5. Nbd2 d6 6. h3 Nbd7 7. Bc4 Qe8 8. Bh2 e5 9. O-O Qe7 10. c3 b6
1968 Monte Carlo-B – Round 8 – Gereben, Erno – 1/2-1/2 – Kozma, Julius – G12 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. Nbd2 d6 6. Bc4 Nc6 7. c3 Qe8 8. h3 e5 9. Bh2 e4 10. Ng1 Qe7
1968 POL Ch 25th – Round 11 – Sliwinski, Henryk – 0-1 – Schmidt, Wlodzimierz – G64 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. Nbd2 d6 6. h3 Nfd7 7. c3 e5 8. dxe5 dxe5 9. Bg5 Qe8 10. Bc4 h6
1968 Prague U26 – Round 11 – Janata, Michael – 1/2-1/2 – Jansa, Vlastimil – G45 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. Nbd2 d6 6. h3 Nbd7 7. Be2 b6 8. O-O Bb7 9. c3 e6 10. a4 a5
1968 Vinkovci – Round 12 – Hort, Vlastimil – 1-0 – Nikolic, Emil – G66 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. Nbd2 d6 6. h3 Nbd7 7. Be2 c5 8. O-O b6 9. a4 a6 10. c3 Bb7
1970 Vinkovci – Round 5 – Taimanov, Mark – 1/2-1/2 – Gligoric, Svetozar – G55 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. Nbd2 d6 6. h3 c5 7. c3 Nc6 8. Be2 cxd4 9. exd4 Re8 10. Bh2 e5
1970 Vinkovci – Round 5 – Taimanov, Mark – 1/2-1/2 – Gligoric, Svetozar – G56 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. Nbd2 d6 6. h3 c5 7. c3 Nc6 8. Be2 cxd4 9. exd4 Re8 10. Bh2 e5
1975 URS Team Ch – Round 1 – Mikenas, Vladas – 1/2-1/2 – Bronstein, David Ionovich – G213 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. Nbd2 d6 6. h3 b6 7. Bc4 c5 8. c3 Ba6 9. Qe2 Bxc4 10. Qxc4 Qc8
1975 URS Team Ch – Round 4 – Govashelishvili, Genadij – 1/2-1/2 – Yuferov, Sergey N – G216 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. h3 b6 6. Be2 Bb7 7. O-O d6 8. a4 a5 9. Na3 e6 10. c3 Qe7
2024 Superbet Chess Blitz – Round 10 – Gukesh D – 0-1 – Wei Yi – G46 1. d4 Nf6 2. Bf4 g6 3. e3 Bg7 4. Nf3 O-O 5. h4 d6 6. Nbd2 Nc6 7. c3 Qe8 8. Bc4 e5 9. Bg5 Bg4 10. Be2 Nh5
Biel Interzonal 1993 – Round 8 – Agdestein, Simen – 0-1 – Spasov, Vasil – G185 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. c4 d6 6. h3 c5 7. Nc3 cxd4 8. exd4 Nc6 9. Be2 d5 10. O-O Bf5
ch-Wereld Teams 1989 – Round 1 – Phung Ye, Ryan – 0-1 – Ivanchuk, Vasyl – G44 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. h3 d6 6. a4 c5 7. a5 cxd4 8. exd4 Nc6 9. a6 bxa6 10. Na3 e5
Cote d'Ivoire Blitz 2019 – Round 3.5 – Karjakin, Sergey – 1-0 – Nepomniachtchi, Ian – G15 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. h3 d6 6. Nbd2 Nbd7 7. c3 Re8 8. Bh2 e5 9. dxe5 Nxe5 10. Nxe5 dxe5
FIDE World Cup 2019 – Round 3.8 – Tomashevsky, Evgeny – 0-1 – Nepomniachtchi, Ian – G358 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. c3 d6 6. h3 Nbd7 7. Be2 Qe8 8. a4 a5 9. O-O b6 10. Na3 Bb7
SportAccord Blindfold Men 2012 – Round 5.4 – Kamsky, Gata – 1/2-1/2 – Wang, Hao(ZJWZ) – G36 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. h3 d6 6. c3 b6 7. Be2 Bb7 8. O-O Nbd7 9. Bh2 e6 10. a4 a5
SportAccord Blitz Men 2013 – Round 14.5 – Kamsky, Gata – 0-1 – Karjakin, Sergey – G106 1. d4 Nf6 2. Bf4 g6 3. e3 Bg7 4. Nf3 O-O 5. c3 d6 6. h3 Nfd7 7. e4 Nc6 8. Bb5 e5 9. Bg5 Qe8 10. d5 Ne7
SportAccord Blitz Men 2013 – Round 8.8 – Kamsky, Gata – 0-1 – Le, Quang Liem – G61 1. d4 Nf6 2. Bf4 g6 3. e3 Bg7 4. Nf3 O-O 5. c3 d6 6. h3 b6 7. a4 a6 8. Bd3 Bb7 9. O-O c5 10. Re1 Nc6
Tal Memorial Blitz 2008 – Round 10 – Grachev, Boris – 0-1 – Movsesian, Sergei – G84 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. h3 d6 6. c3 Nfd7 7. Bh2 e5 8. Be2 f5 9. O-O Nc6 10. b4 h6
Tal Memorial Blitz 2008 – Round 17 – Kamsky, Gata – 0-1 – Svidler, Peter – G136 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. h3 c5 6. c3 d6 7. Nbd2 b6 8. Bd3 Bb7 9. Qe2 Nbd7 10. O-O Re8
Tal Memorial Blitz 2014 – Round 14.3 – Tomashevsky, Evgeny – 1-0 – Gelfand, Boris – G81 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. h3 c5 6. c3 Qb6 7. Qb3 d6 8. Nbd2 Be6 9. Bc4 Bxc4 10. Nxc4 Qa6
Tal Memorial Blitz 2014 – Round 18.2 – Tomashevsky, Evgeny – 1/2-1/2 – Nepomniachtchi, Ian – G104 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. h3 b6 6. c4 Bb7 7. Nc3 d5 8. Rc1 c5 9. dxc5 bxc5 10. cxd5 Nxd5
World Blitz 2007 – Round 11 – Kamsky, Gata – 1-0 – Kasimdzhanov, Rustam – G106 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. h3 b6 6. c3 Bb7 7. Nbd2 d6 8. a4 c5 9. Be2 Nc6 10. O-O Rc8

A48j — London System

1.d4 Nf6 2.Nf3 g6 3.Bf4 Bg7 4.e3 O-O

Les coups candidats

5.Be2 — 47.5% (5386 parties) →

Ambassadeurs : Glienke, Manfred, Dr. (40x), Pakleza, Zbigniew (38x), Lenz, Juergen (36x), Burmakin, Vladimir (34x), Abel, Lajos (18x), Nguyen Thi Mai Hung (17x), Prie, Eric (16x), Grachev, Boris (16x)

5.h3 — 26.4% (2993 parties)

Ambassadeurs : Mueller, Michael (22x), Zhukova, Natalia (20x), Lenz, Juergen (19x), Ehrke, Michael (16x), Sapis, Witalis (15x), Ledger, Stephen C (12x), Dobos, Otto (12x), Owens, Johnny (11x)

5.Nbd2 — 9.5% (1079 parties)

Ambassadeurs : Franklin, Michael J (12x), Feibert, Fred (7x), Pereyra, Darío (7x), Bondarevsky, Igor (5x), Appel, Ralf (5x), Reutimann, Hans Peter (5x), Ferry, Roger (5x), Vager, Boris (5x)

5.Bd3 — 8.2% (930 parties)

Ambassadeurs : Just, Gabriele, Dr. (11x), Hardwick, Martin E (6x), Valle, Knut (5x), Hidegh, Gabor (5x), Kosar, Mikulas (5x), Camp, Imogen A L (5x), Navarro Coloma, Antonio (5x), Bajusz, Gyorgy (4x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	5.Be2	5.h3	5.Nbd2	5.Bd3
<1800	662	38%	23%	10%	18%
1800-2200	4741	46%	26%	10%	9%
2200-2600	3996	57%	29%	6%	2%
2600+	107	68%	24%	3%	—

Évolution par décennie (% des parties)

Décennie	N parties	5.Be2	5.h3	5.Nbd2	5.Bd3
1900s	1	—	—	—	100%
1920s	3	—	—	67%	33%
1930s	8	—	—	62%	12%
1940s	8	12%	25%	25%	25%
1950s	40	28%	12%	50%	8%
1960s	68	15%	24%	46%	6%
1970s	113	41%	17%	30%	4%
1980s	455	44%	31%	13%	5%
1990s	1755	40%	29%	11%	10%
2000s	2639	43%	29%	9%	10%
2010s	5232	52%	25%	8%	7%
2020s	1027	52%	24%	7%	8%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
5.Be2	52%	52%	-0.3%
5.h3	25%	24%	▼ -0.6%
5.Nbd2	8%	7%	-0.4%
5.Bd3	7%	8%	+0.4%

Joueurs célèbres

Champions du monde dans cette position

Carlsen, Magnus — 4 parties
Ju, Wenjun — 4 parties
Euwe, Max — 2 parties
Smyslov, Vladimir — 2 parties
Kasparov, Garry — 2 parties
Karpov, Anatoly — 2 parties
Gukesh D — 2 parties
Alekhine, Alexander — 1 partie
Anand, Viswanathan — 1 partie
Karpov, Aleksandr — 1 partie
Ding, Liren — 1 partie

Parties historiques

5.Be2 — 47.5% (5386 parties)

1949 — Fridstein, German vs Panov, Vasily — 1/2-1/2 — Moscow RUS
1950 — Pavlov, Mircea-Sergiu-Aurelian vs Geller, Efim P. — 1-0 — Kiev UKR
1951 — Bauza, Lorenzo vs Toran Albero, Roman — 1/2-1/2 — San Rafael
1951 — Bauza, Lorenzo vs Reinhardt, Enrique — 1-0 — Mar del Plata ARG
1952 — Bauza, Lorenzo vs Bolbochan, Julio — 0-1 — Rio de Janeiro BRA

5.h3 — 26.4% (2993 parties)

1947 — Batuev, Anton vs Bronstein, David I — 0-1 — Leningrad RUS
1949 — Ulan, Ude vs Volgograd — 0-1 — telegraph
1952 — Blaszczak, Czeslaw vs Szymanski, Aleksander — 1/2-1/2 — Katowice POL
1953 — Mueller, Hans vs Averbakh, Yuri L — 1/2-1/2 — Wenen AUT-URS
1956 — Franklin, Michael J vs Alexander, Conol Hugh — 0-1 — Blackpool/ Lancashire

5.Nbd2 — 9.5% (1079 parties)

1923 — Speijer, Abraham vs Euwe, Max — 0-1 — Amsterdam NED
1923 — Speyer, Dimitri vs Euwe, Max — 0-1 — Amsterdam Club Ch.
1936 — Alekhine, Alexander vs Richter, Kurt P — 1/2-1/2 — Podebrady CZE
1936 — Romih, Max vs Richter, Kurt P — 0-1 — Munich GER
1938 — Romanovsky, Pjotr vs Kasparian, Genrikh — 1-0 — Leningrad RUS

5.Bd3 — 8.2% (930 parties)

1907 — Akonde Marshall vs Burn, Allan — 1-0 — Ostend
1926 — O Hagan J vs Allen, Warren Jackson — 0-1 — ?
1939 — Bloch Nakkerud, Ruth vs Andersson, Ingeborg — 0-1 — Buenos Aires ARG
1948 — Alvarez Suarez, Aladino vs Saborido Carre, Rafael — 0-1 — Aviles ESP
1948 — Alvarez Suarez, Aladino vs Toran Albero, Roman — 0-1 — Aviles ESP

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