A48i - 3.Bf4 Bg7 4.c3 - London System [+0.12]

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A48i — London System
1.d4 Nf6 2.Nf3 g6 3.Bf4 Bg7 4.c3
Eval: [+0.12]
Les coups candidats
4…O-O — 49.6% (1367 parties)
Ambassadeurs : Kamsky, Gata (25x), Hoffman, Alejandro (12x), Bouhallel, Rabah (11x), Schlindwein, Rolf (9x), Burmakin, Vladimir (9x), Mrkonjic, Nenad (7x), Cori, Jorge (7x), Langeweg, Kick (6x)
4…d6 — 38.2% (1054 parties)
Ambassadeurs : Kamsky, Gata (9x), Milanowski, Jan (8x), Schwertel, Johann (8x), Herrmann, Andreas (8x), Mrkonjic, Nenad (7x), Ljubinkovic, Miodrag (7x), Stoppel, Franz (6x), Bouhallel, Rabah (6x)
4…b6 — 6.3% (175 parties)
Ambassadeurs : Cibulka, Vladimir (4x), Pribyl, Josef (3x), Dreev, Aleksey (3x), Gulko, Boris (3x), Popchev, Milko (3x), Burmakin, Vladimir (3x), Kamsky, Gata (3x), Reti, Richard (2x)
4…d5 — 4.2% (116 parties)
Ambassadeurs : Milanowski, Jan (2x), Lacy-Hulbert, Arthur Percival (1x), Shepherd, Ernest Edward (1x), Vadasz, Laszlo (1x), Hort, Vlastimil (1x), Lebel-Arias, Julia (1x), Canela Gimenez, Teresa (1x), Voiculescu, Paul (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 4…O-O 4…d6 4…b6 4…d5
<1800 101 47% 44% 2% 5%
1800-2200 1093 46% 42% 5% 5%
2200-2600 1022 54% 33% 9% 2%
2600+ 81 60% 28% 10% —
Évolution par décennie (% des parties)
Décennie N parties 4…O-O 4…d6 4…b6 4…d5
1920s 5 20% 20% 60% —
1930s 2 50% — — 50%
1940s 5 60% 40% — —
1950s 6 33% 67% — —
1960s 34 38% 44% 15% 3%
1970s 48 27% 46% 21% 2%
1980s 75 51% 32% 9% 7%
1990s 537 48% 38% 7% 6%
2000s 780 47% 41% 6% 4%
2010s 971 53% 37% 5% 3%
2020s 294 53% 35% 6% 3%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4…O-O 53% 53% ▲ +0.7%
4…d6 37% 35% ▼ -2.4%
4…b6 5% 6% ▲ +1.2%
4…d5 3% 3% +0.0%
Joueurs célèbres
Champions du monde dans cette position
Ding, Liren — 3 parties
Euwe, Max — 1 partie
Smyslov, Vladimir — 1 partie
Karpov, Aleksandr — 1 partie
Ju, Wenjun — 1 partie
Kramnik, Vladimir — 1 partie
Parties historiques
4…O-O — 49.6% (1367 parties)
1923 — Helling, Bernd vs Thoenes — 0-1 — Frankfurt GER
1939 — Rodriguez Hurtado, Jorge vs Kiprov, Alexander — 0-1 — Buenos Aires ARG
1944 — Cheney, R. vs Fine, Reuben — 0-1 — Washington, DC USA
1949 — Juehe, Heinrich vs Hecker, Erwin — 1-0 — Buende
1949 — Tipary, Lajos vs Kotov Lundqvist, Alex — 0-1 — Budapest HUN
4…d6 — 38.2% (1054 parties)
1925 — Moses, George Wyville vs Yates, Fred Dewhirst — 0-1 — Stratford-upon-Avon
1941 — Deutschmann , Max vs Neumann Feliu, Rodrigo — 1-0 — Danzig
1943 — Tipary, Lajos vs Barcza, Gedeon — 0-1 — Budapest HUN
1951 — Romih, Max vs Nestler, Vincenzo — 0-1 — Venice ch14-ITA
1952 — Tipary, Lajos vs Szilagyi, Gyorgy Laszlo — 0-1 — Debrecen HUN
4…b6 — 6.3% (175 parties)
1924 — Coria Fernandez, V vs Reti, Richard — 0-1 — Buenos Aires /07/
1924 — Fernandez Coria, Valentin vs Reti, Richard — 0-1 — Buenos Aires ARG
1928 — Weenink, Henri vs Euwe, Max — 1/2-1/2 — Amsterdam NED
1961 — Smyslov, Vasily vs Geller, Efim P. — 0-1 — Moscow USSR Team ch
1965 — Bronstein, David I vs Gunsberger, Alexander — 1/2-1/2 — Hamburg etc
4…d5 — 4.2% (116 parties)
1931 — Lacy-Hulbert, Arthur Percival vs Shepherd, Ernest Edward — 1-0 — Worcester
1967 — Vadasz, Laszlo vs Hort, Vlastimil — 1/2-1/2 — Havana CUB
1975 — Voiculescu, Paul vs Ott, Wolfgang — 1/2-1/2 — Sinaia
1980 — Laketic, Gojko vs Popov, Jovan — 1-0 — Virovitica
1987 — Lebel-Arias, Julia vs Canela Gimenez, Teresa — 1/2-1/2 — Tuzla