E11b —
1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+ 4.Nbd2 d5
Eval: [+0.48]
Les coups candidats
5.Qa4+ — 41.5% (1014 parties)
Ambassadeurs : Miezis, Normunds (14x), Kurajica, Bojan (12x), Galego, Luis (12x), Eperjesi, Laszlo Dr. (9x), Browne, Walter Shawn (8x), Ftacnik, Lubomir (8x), Rashkovsky, Nukhim N (8x), Nikolic, Predrag (8x)
5.e3 — 27.6% (673 parties)
Ambassadeurs : Gipslis, Aivars (14x), Ivkov, Borislav (9x), Uhlmann, Wolfgang (8x), Rashkovsky, Nukhim N (7x), Parma, Bruno (6x), Antoshin, Vladimir S (5x), Jussupow, Artur (5x), Neamtu, Serban-Constantin (4x)
5.a3 — 22.2% (542 parties)
Ambassadeurs : Cebalo, Miso (6x), Kurajica, Bojan (6x), Rashkovsky, Nukhim N (5x), Galego, Luis (5x), Grivas, Efstratios (5x), Yermolinsky, Alex (4x), Keres, Paul Petrovich (3x), Gambirazio Rohde, Mariano (3x)
5.g3 — 5.1% (125 parties)
Ambassadeurs : Kozul, Zdenko (7x), Galego, Luis (4x), Kurajica, Bojan (3x), Mikhalevski, Alexander (3x), Neukirch, Detlef (2x), Knezevic, Milorad (2x), Alburt, Lev (2x), Kudela, Stanislav (2x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 5.Qa4+ 5.e3 5.a3 5.g3
<1800 34 35% 29% 21% 6%
1800-2200 481 38% 32% 21% 6%
2200-2600 1522 45% 23% 23% 6%
2600+ 70 60% 23% 14%
Évolution par décennie (% des parties)
Décennie N parties 5.Qa4+ 5.e3 5.a3 5.g3
1920s 2 50% 50%
1930s 10 20% 60% 20%
1940s 7 57% 43%
1950s 16 19% 50% 19%
1960s 120 9% 69% 16% 2%
1970s 61 16% 57% 20% 2%
1980s 233 41% 35% 20% 2%
1990s 375 39% 23% 25% 7%
2000s 542 39% 25% 28% 5%
2010s 782 47% 23% 20% 6%
2020s 293 56% 18% 17% 7%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
5.Qa4+ 47% 56% ▲ +8.9%
5.e3 23% 18% ▼ -5.5%
5.a3 20% 17% ▼ -3.4%
5.g3 6% 7% ▲ +0.9%
Joueurs célèbres
Champions du monde dans cette position
Gukesh D — 4 parties
Karpov, Anatoly — 3 parties
Tal, Mikhail — 2 parties
Kasparov, Garry — 2 parties
Anand, Viswanathan — 2 parties
Smyslov, Vladimir — 1 partie
Parties historiques
5.Qa4+ — 41.5% (1014 parties)
1926 — Teller, Alfred vs King, Eduard Norman — 1-0 — Hastings ENG
1935 — Soerensen, Ernst vs Krogius, Ragnar — 1-0 — ?
1938 — Capablanca, Jose vs Corzo y Principe, Juan — 1/2-1/2 — Havana CUB
1950 — Lachmann, Hans G vs De Meyer, Alexander — 0-1 — Bielefeld
1953 — Eliskases, Erich vs Alvarez Martin, Pedro — 1/2-1/2 — Bariloche
5.e3 — 27.6% (673 parties)
1929 — Vajda, Albert vs Canal, Esteban — 1/2-1/2 — Budapest HUN
1934 — Flohr, Salo vs Becker, Albert — 1-0 — Bad Liebenwerda
1935 — Bogoljubow, Efim vs Ahues, Carl — 1-0 — Bad Nauheim
1936 — Bohosiewicz P vs Arnlaugsson, Gudmundur — 1-0 — Munich GER
1937 — Szabo, Ladislav vs Fuster, Geza — 1-0 — Budapest HUN
5.a3 — 22.2% (542 parties)
1930 — Hoenlinger, Baldur vs Gonzalez Klein, Alberto — 1/2-1/2 — Gyor
1934 — Bogoljubow, Efim vs Johner, Hans — 1-0 — Zurich SUI
1947 — Goldenov, Boris P vs Keres, Paul — 0-1 — Leningrad ch-URS
1947 — Goldenow vs Keres, Paul Petrovich — 0-1 — Leningrad RUS
1949 — Witkowski, Stanislaw vs Unzicker, Wolfgang — 0-1 — Heidelberg GER
5.g3 — 5.1% (125 parties)
1968 — Moehring, Guenther vs Fuchs, Reinhart — 1/2-1/2 — Weimar GER
1968 — Jongsma, Alexander vs Langeweg, Kick — 0-1 — The Hague NED
1974 — Heinig, Wolfram, Dr. vs Neukirch, Detlef — 0-1 — Potsdam GER
1984 — Petursson, Margeir vs Knezevic, Milorad — 1/2-1/2 — Neskaupstad
1984 — Alburt, Lev vs Ginsburg, Mark — 1-0 — USA