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A53q —
1.d4 Nf6 2.c4 d6 3.Nf3 Bg4 4.Nc3
Eval: [+0.75]
Les coups candidats
4…Nbd7 — 44.8% (466 parties)
Ambassadeurs : Lauk, Ular (8x), Tu, Hoang Thai (7x), Tartakower, Savielly (6x), Porrasmaa, Timo (4x), Andersson, Ulf (4x), Zvarik, Martin (4x), Wockenfuss, Klaus (3x), Nguyen T Thu, Huong (3x)
4…Bxf3 — 19.5% (203 parties)
Ambassadeurs : Mikhaletz, Lubomir (4x), Ikonnikov, Vyacheslav (3x), Romanov, Egor (3x), Gipslis, Aivars (2x), Palatnik, Semon (2x), Karner, Hillar (2x), Boensch, Uwe (2x), Appel, Ralf (2x)
4…c6 — 14.5% (151 parties)
Ambassadeurs : Ghitescu, Theodor (3x), Pirc, Vasja (2x), Schmid, Leo (2x), Barlov, Dragan (2x), Prudnikova, Svetlana (2x), Bandziene, Rasa (2x), Ristoja, Jan (2x), Vorotnikov, Vlad (2x)
4…g6 — 12.4% (129 parties)
Ambassadeurs : Hug, Werner (4x), Kluger, Gyula (3x), Petrosian, Tigran V. (3x), Levitt, Jonathan P (2x), Petrosian, Tigran A. (2x), Kapetanovic, Armin (2x), Ivkov, Borislav (2x), Brueggemann, Ludger (2x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 4…Nbd7 4…Bxf3 4…c6 4…g6
<1800 15 27% 13% 7% 27%
1800-2200 255 53% 19% 12% 7%
2200-2600 584 41% 22% 16% 13%
2600+ 13 31% 31% 8% 31%
Évolution par décennie (% des parties)
Décennie N parties 4…Nbd7 4…Bxf3 4…c6 4…g6
1910s 2 100%
1920s 5 80%
1930s 2 100%
1940s 6 100%
1950s 11 73% 27%
1960s 42 36% 7% 26% 29%
1970s 36 42% 19% 11% 25%
1980s 67 45% 18% 13% 9%
1990s 221 42% 21% 16% 10%
2000s 313 45% 22% 14% 11%
2010s 281 44% 20% 14% 14%
2020s 54 50% 17% 15% 7%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4…Nbd7 44% 50% ▲ +6.2%
4…Bxf3 20% 17% ▼ -3.6%
4…c6 14% 15% ▲ +0.9%
4…g6 14% 7% ▼ -6.1%
Joueurs célèbres
Champions du monde dans cette position
Alekhine, Alexander — 1 partie
Lasker, Emanuel — 1 partie
Smyslov, Vladimir — 1 partie
Tal, Mikhail — 1 partie
Parties historiques
4…Nbd7 — 44.8% (466 parties)
1913 — Kolousek, B vs Opocensky, Karel — 0-1 — Mlada Boleslav CZE
1918 — Rubinstein, Akiba vs Schlechter, Carl — 1-0 — Berlin GER
1921 — Gruenfeld, Ernst vs Bogoljubow, Efim — 1-0 — Budapest HUN
1925 — Colle, Edgar vs Janowski, Dawid — 1-0 — Hastings ENG
1925 — Gruenfeld, Ernst vs Lasker, Emanuel — 1/2-1/2 — Moscow RUS
4…Bxf3 — 19.5% (203 parties)
1965 — Bronstein, David I vs Gipslis, Aivars — 1/2-1/2 — Zagreb CRO
1965 — Pfleger, Helmut, Dr. vs Korchnoi, Viktor — 1-0 — Hamburg etc
1966 — Liberzon, Vladimir M vs Gipslis, Aivars — 1/2-1/2 — Ch URS, Tbilisi GEO
1974 — Commons, Kim S vs Karklins, Andrew — 1/2-1/2 — Houston Houston, TX USA
1975 — Webb, Samuel vs Chellstorp, Craig — 1/2-1/2 — Birmingham ENG
4…c6 — 14.5% (151 parties)
1961 — Hollis, Adrian vs Orbaan, Constant — 1-0 — Cheltenham
1961 — Kluger, Gyula vs Bilek, Istvan — 1/2-1/2 — Budapest HUN
1962 — Sofrevski, Jovan vs Pirc, Vasja — 1-0 — Skopje ch17-YUG
1965 — Lengyel, Laszlo vs Pirc, Vasja — 1-0 — Budapest HUN
1965 — Farago, Ivan vs Bronstein, Luis Marcos — 1-0 — Barcelona ESP
4…g6 — 12.4% (129 parties)
1957 — Kluger, Gyula vs Clarke, Peter H — 1-0 — Hastings ENG
1958 — Pachman, Ludek vs Petrosian, Tigran V. — 0-1 — Portoroz SLO
1959 — Mueller, Klaus vs Lohsse, Hans Peter — 1/2-1/2 — Berlin West
1960 — Kluger, Gyula vs Petrosian, Tigran A. — 0-1 — Leipzig olm
1960 — Kluger, Gyula vs Petrosian, Tigran V. — 0-1 — Leipzig GER