D23f - 4.Qa4+ Nbd7 - QGA: Mannheim (1935)

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D23f — QGA: Mannheim (1935)
1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.Qa4+ Nbd7
Les coups candidats
5.Nc3 — 42.3% (245 parties)
Ambassadeurs : Taimanov, Mark (5x), Knezevic, Milorad (4x), Palmason, Gudmundur (2x), Westerinen, Heikki M.J. (2x), Lutikov, Anatoly S (2x), Gurgenidze, Bukhuti (2x), Pilnik, Herman (2x), Fedder, Steen (2x)
5.Qxc4 — 33.5% (194 parties)
Ambassadeurs : Davidovic, Aleksandar (2x), Palatnik, Semon (2x), Eperjesi, Laszlo Dr. (1x), Sapi, Laszlo (1x), Pfeiffer, Gerhard (1x), Schwarz, Andreas (1x), Chistiakov, Alexander (1x), Franklin Kagoni (1x)
5.g3 — 19.0% (110 parties)
Ambassadeurs : Huebner, Robert (5x), Andersson, Ulf (4x), Gheorghiu, Florin (3x), Ghitescu, Theodor (2x), Radulov, Ivan (2x), Kurkijarvi, Mikko (2x), Weigelt, Horst (1x), Hampel, Johannes (1x)
5.e3 — 3.6% (21 parties)
Ambassadeurs : Parr, Frank (1x), Clarke, Peter (1x), Feibert, Petra (1x), Burchardt, Brigitte (1x), Wolrich, Charles (1x), Bacrot, Etienne (1x), Hund, Gerhard (1x), Lainburg, Viktor (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 5.Nc3 5.Qxc4 5.g3 5.e3
<1800 12 33% 42% 8% 8%
1800-2200 186 37% 38% 18% 6%
2200-2600 288 43% 31% 22% 2%
2600+ 10 40% 30% 30% —
Évolution par décennie (% des parties)
Décennie N parties 5.Nc3 5.Qxc4 5.g3 5.e3
1950s 21 52% 29% 14% —
1960s 23 78% 9% 9% 4%
1970s 23 65% 17% 13% 4%
1980s 33 36% 21% 42% —
1990s 80 32% 30% 28% 8%
2000s 145 34% 39% 20% 4%
2010s 172 45% 34% 17% 4%
2020s 82 44% 45% 10% —
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
5.Nc3 45% 44% ▼ -0.9%
5.Qxc4 34% 45% ▲ +11.4%
5.g3 17% 10% ▼ -7.1%
5.e3 4% 0% ▼ -4.1%
Joueurs célèbres
Champions du monde dans cette position
Ju, Wenjun — 2 parties
Carlsen, Magnus — 2 parties
Karpov, Anatoly — 1 partie
Anand, Viswanathan — 1 partie
Gukesh D — 1 partie
Parties historiques
5.Nc3 — 42.3% (245 parties)
1950 — Petrov, Petar vs Ganichev, Vladimir Dm — 1/2-1/2 — Sofia BUL
1951 — Makarczyk, Kazimierz vs Herrmann, Ludwig — 1-0 — Sopot
1951 — Martin M Pereira vs Wexler, Eithan — 1-0 — Buenos Aires ch-ARG
1952 — Sajtar, Jaroslav vs Byrne, Robert E — 1/2-1/2 — Helsinki olm
1952 — Keller, Hans vs Pilnik, Herman — 0-1 — Vienna AUT
5.Qxc4 — 33.5% (194 parties)
1950 — Giustolisi, Alberto vs Devos, Paul — 1/2-1/2 — Dubrovnik CRO
1952 — Zografakis, Aristidis vs Arnlaugsson, Gudmundur — 0-1 — Helsinki olm
1952 — Ciejka, Tadeusz vs Makarczyk, Kazimierz — 0-1 — Katowice POL
1956 — Courtney, Hugh Edward Guy vs Pratten, Wilfred Henry — 0-1 — Hastings ENG
1958 — Gurbanov Ali Arslan vs Balduzzi, Reynaldo — 1-0 — Buenos Aires ARG
5.g3 — 19.0% (110 parties)
1952 — Ivanov, Pavlin Nikolay vs Bobotsov, Milko G — 0-1 — Sofia BUL
1954 — Weigelt, Horst vs Hampel, Johannes — 0-1 — Schkopau
1954 — Navarovszky, Laszlo vs Partyka, Kazimierz — 0-1 — Budapest tt Budapest HUN
1960 — Bertok, Mario Jr. vs Hort, Vlastimil — 0-1 — Leipzig GER
1963 — Macskasy, Elod vs Fuster, Geza — 0-1 — Winnipeg CAN
5.e3 — 3.6% (21 parties)
1960 — Parr, Frank vs Clarke, Peter — 1/2-1/2 — Leicester
1978 — Feibert, Petra vs Burchardt, Brigitte — 1/2-1/2 — Berlin Gruenau
1993 — Sebenik, Matej vs Hajek, Lukas — 1-0 — Bratislava WchJM-U10
1993 — Nestorovic, Irena vs Popov, Radmila — 0-1 — Belgrade SRB
1996 — Wolrich, Charles vs Bacrot, Etienne — 0-1 — NI Jeune R05 M3 B2 C