E21c - 4…c5 - Three Knights (1927)

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E21c — Three Knights (1927)
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Nf3 c5
Les coups candidats
Ambassadeurs : Barsov, Alexei (33x), Bacrot, Etienne (30x), Ubilava, Elizbar (27x), Bakheet Farag (26x), Gaprindashvili, Nona (23x), Karpov, Anatoly (21x), Campos Moreno, Javier B. (21x), Zvjaginsev, Vadim (20x)
Ambassadeurs : Borisenko, Georgy K (33x), Pinter, Jozsef (24x), Korchnoi, Viktor (16x), Kolanek, Roman (13x), Pachman, Ludek (8x), Wade, Robert G (8x), Taimanov, Mark (8x), Petrosian, Tigran V. (7x)
5.a3 — 4.3% (251 parties)
Ambassadeurs : Stocek, Jiri (2x), Ryska, Jirí (2x), Lastovicka, Jiri (1x), Pechan, Z. (1x), Kristjansson, Olafur (1x), Weiss, Martin (1x), Rossetto, Hector (1x), Shocron, Ruben (1x)
5.d5 — 3.4% (198 parties)
Ambassadeurs : Kluger, Gyula (6x), Szabo, Laszlo (4x), Korchnoi, Viktor (3x), Pachman, Ludek (3x), Borisenko, Georgy K (3x), Abanin, Vladimir (3x), Thorfinnsson, Bragi (3x), Rapaka Samuel Paul (2x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 5.g3 5.e3 5.a3 5.d5
<1800 264 22% 39% 12% 5%
1800-2200 1531 37% 41% 7% 4%
2200-2600 2866 67% 24% 1% 2%
2600+ 320 91% 8% — 0%
Évolution par décennie (% des parties)
Décennie N parties 5.g3 5.e3 5.a3 5.d5
1950s 89 — 73% 8% 11%
1960s 159 3% 77% 2% 15%
1970s 135 18% 65% 3% 6%
1980s 590 68% 23% 2% 2%
1990s 1025 53% 27% 5% 4%
2000s 1845 56% 28% 4% 3%
2010s 1700 53% 33% 5% 3%
2020s 269 50% 33% 6% 2%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
5.g3 53% 50% ▼ -3.0%
5.e3 33% 33% +0.0%
5.a3 5% 6% ▲ +1.0%
5.d5 3% 2% ▼ -0.7%
Joueurs célèbres
Champions du monde dans cette position
Karpov, Anatoly — 10 parties
Kasparov, Garry — 10 parties
Anand, Viswanathan — 10 parties
Carlsen, Magnus — 10 parties
Kramnik, Vladimir — 9 parties
Tal, Mikhail — 8 parties
Botvinnik, Mikhail — 2 parties
Hou, Yifan — 2 parties
Ju, Wenjun — 2 parties
Gukesh D — 1 partie
Parties historiques
5.g3 — 52.4% (3045 parties)
1968 — Liptay, Laszlo Dr. vs Janata, Michael — 1/2-1/2 — Moscow RUS
1968 — De Carbonnel, Heinz vs Marest, Steren — 1-0 — corr Wch6
1968 — De Carbonnel, Heinz vs Sanakoev, Grigory — 1/2-1/2 — corr Wch6
1968 — Liptay, Laszlo Dr. vs Dely, Peter — 1/2-1/2 — HUN
1970 — Liptay, Laszlo Dr. vs Bukic, Enver — 1/2-1/2 — Debrecen HUN
5.e3 — 31.7% (1842 parties)
1950 — Heemskerk, Fenny vs Chaude de Silans, Chantal — 0-1 — Moscow RUS
1951 — Pachman, Ludek vs Balanel, Ion — 1-0 — Marianske Lazne zt
1951 — Szilagyi, Gyorgy Laszlo vs Anay Barche — 0-1 — Budapest HUN
1951 — Smyslov, Vasily vs Moiseev, Oleg — 1-0 — URS-ch sf Leningrad RUS
1951 — Petrosian, Tigran V. vs Bannik, Anatolij — 1-0 — Tbilisi GEO
5.a3 — 4.3% (251 parties)
1950 — Lastovicka, Jiri vs Pechan, Z. — 1/2-1/2 — Chocen
1950 — Winterton, Ken vs Bogoljubow, Efim — 0-1 — Southsea
1953 — Rossetto, Hector vs Shocron, Ruben — 1-0 — Mar del Plata ARG
1953 — Eliskases, Erich vs Wexler, Bernardo — 1/2-1/2 — Mar del Plata ARG
1954 — Ribeiro, Joao vs Mangini, Jose Henrique de Mello — 1/2-1/2 — Sao Paulo BRA
5.d5 — 3.4% (198 parties)
1954 — Castillo Larenas, Mariano vs Shocron, Ruben — 1/2-1/2 — Mar del Plata ARG
1956 — Olivera, Alfredo vs Bauza, Lorenzo — 0-1 — Montevideo URU
1957 — Korchnoi, Viktor vs Nedeljkovic, Srecko M — 1-0 — Wenen etc
1957 — Szabo, Laszlo vs Donner, Jan-Hein — 1-0 — Wageningen zt
1957 — Szabo, Laszlo vs Rapaka Samuel Paul — 1/2-1/2 — Dallas, TX USA