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A48j — London System (1927)
1.d4 Nf6 2.Nf3 g6 3.Bf4 Bg7 4.e3
Les coups candidats
Ambassadeurs : Lenz, Juergen (69x), Glienke, Manfred, Dr. (43x), Zhukova, Natalia (26x), Mueller, Michael (24x), Grachev, Boris (24x), Sapis, Witalis (21x), Prie, Eric (20x), Franklin, Michael J (16x)
4…d6 — 33.8% (7090 parties)
Ambassadeurs : Burmakin, Vladimir (22x), Ehrke, Michael (20x), Glienke, Manfred, Dr. (18x), Lenz, Juergen (17x), Zhukova, Natalia (12x), Franklin, Michael J (11x), Le, Kieu Thien Kim (11x), Szydlowska-Duda, Marta (10x)
4…c5 — 4.7% (991 parties)
Ambassadeurs : Lenz, Juergen (5x), Sydor, Andrzej (3x), Riefner, Edwin (3x), Ehrke, Michael (3x), Pereyra, Darío (3x), Florezabihi, Ali (2x), Fassmann, Kurt (2x), Lorincz, Istvan (2x)
4…d5 — 3.9% (808 parties)
Ambassadeurs : Sandum, Kjell Tore (4x), Schnell, Franz (3x), Abel, Lajos (3x), Chemin, Vitorio (3x), Norman, Dinah M (3x), Zemlickova, Olena (3x), Mueller, Michael (3x), Karger, E. (2x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 4…O-O 4…d6 4…c5 4…d5
<1800 2174 55% 33% 3% 6%
1800-2200 9849 54% 34% 5% 4%
2200-2600 6470 59% 33% 5% 2%
2600+ 192 49% 42% 5% —
Évolution par décennie (% des parties)
Décennie N parties 4…O-O 4…d6 4…c5 4…d5
1950s 67 60% 27% 9% —
1960s 118 58% 31% 8% 4%
1970s 190 58% 34% 4% 1%
1980s 819 56% 35% 6% 2%
1990s 3257 54% 34% 6% 4%
2000s 4746 56% 33% 4% 5%
2010s 9461 56% 34% 5% 4%
2020s 2317 56% 35% 4% 3%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4…O-O 56% 56% +0.5%
4…d6 34% 35% ▲ +1.3%
4…c5 5% 4% ▼ -1.2%
4…d5 4% 3% ▼ -0.8%
Joueurs célèbres
Champions du monde dans cette position
Carlsen, Magnus — 8 parties
Kasparov, Garry — 6 parties
Karpov, Anatoly — 5 parties
Ju, Wenjun — 5 parties
Gukesh D — 3 parties
Anand, Viswanathan — 1 partie
Karpov, Aleksandr — 1 partie
Ding, Liren — 1 partie
Smyslov, Vladimir — 1 partie
Parties historiques
4…O-O — 55.8% (11701 parties)
1950 — Pavlov, Mircea-Sergiu-Aurelian vs Geller, Efim P. — 1-0 — Kiev UKR
1950 — Engalicew, Nicola vs Paoli, Enrico — 1-0 — Sorrento ch ITA
1950 — Engalicev, Nicolas vs Primavera, Giuseppe — 0-1 — Sorrento
1950 — Engalicew vs Dantes La Primavera — 0-1 — Sorrento ch
1951 — Bondarevsky, Igor vs Aronin, Lev — 1-0 — Moskou ch-URS
4…d6 — 33.8% (7090 parties)
1952 — Bauza, Lorenzo vs Engels, Ludwig — 1/2-1/2 — Rio de Janeiro BRA
1952 — Bauza, Lorenzo vs Rossetto, Hector — 0-1 — Rio de Janeiro BRA
1952 — Kotov, Alexander vs Boleslavsky, Isaac — 0-1 — USSR
1952 — Bauza, Lorenzo vs Eliskases, Erich — 0-1 — Rio de Janeiro BRA
1954 — Bauza, Lorenzo vs Miguel, Nahuel — 0-1 — Mar del Plata ARG
4…c5 — 4.7% (991 parties)
1952 — Kotov, Alexander vs Geller, Efim P. — 1/2-1/2 — Stockholm izt
1954 — Bauza, Lorenzo vs Castillo Larenas, Mariano — 1/2-1/2 — Mar del Plata ARG
1954 — Vedenski, N. vs Golovko, Nikolay Grigorievic — 1/2-1/2 — Riga LAT
1957 — Romih, Max vs Palmiotto, Fiorentino — 0-1 — Reggio Emilia ITA
1957 — Yudovich, Mikhail M vs Nikitin, A. — 1-0 — Burevestnik ch
4…d5 — 3.9% (808 parties)
1960 — Yudovich, Mikhail M vs Artsukevich, K. — 1/2-1/2 — Moscow RUS
1964 — Berezhnoi, Viktor vs Levitsky, Anatoly — 0-1 — Kiev UKR
1965 — Jenei, Ferenc vs Habulezi Joseph — 1-0 — HUN
1967 — Bilek, Edith vs Eretova, Kveta — 1-0 — ?
1967 — Stadler, Tereza vs Nowarra, Waltraud — 1-0 — Subotica SRB