E04r - 5…c5 6.O-O Nc6 7.Qa4 Bd7 8.Qxc4 b5 - Open (1949)

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E04r — Open
1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 dxc4 5.Nf3 c5 6.O-O Nc6 7.Qa4 Bd7 8.Qxc4 b5
Les coups candidats
9.Qd3 — 86.6% (1131 parties)
Ambassadeurs : Volodin, Viktor (10x), Radulov, Ivan (9x), Inkiov, Ventzislav (8x), Sokolov, Andrei (7x), Gulko, Boris (5x), Vladimirov, Yevgeniy (5x), Marsalek, Zdenek (5x), Osterburg, Klaus-Jürgen (4x)
9.Qc3 — 10.7% (140 parties)
Ambassadeurs : Lu, Shanglei (4x), Shankland, Sam (3x), Kazakouski, Valery (3x), Sodoma, Jan (2x), Lei, Tingjie (2x), Naiditsch, Arkadij (2x), Manko, Mariia (2x), Firouzja, Alireza (2x)
9.Qb3 — 1.1% (15 parties)
Ambassadeurs : Vrijbloed (1x), Leek, John (1x), Garancovsky, Pavol (1x), Slapak, Zdenek (1x), Alonso Perez, Jose Ramon (1x), Acebal Muniz, Antonio (1x), Taksrud, Vidar (1x), Glenne, Bjorn Erik (1x)
9.Qxb5 — 0.8% (10 parties)
Ambassadeurs : Bleis, Christian, Prof. Dr. (1x), Sonntag, Hans-Hubert (1x), Hodgson, Julian M (1x), Karolyi, Tibor (1x), Konik, Michael, Dr. (1x), Mueller, Maximilian (1x), Cortegoso, Martin (1x), Monier, Raul (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 9.Qd3 9.Qc3 9.Qb3 9.Qxb5
<1800 20 90% — 5% —
1800-2200 392 88% 8% 2% 1%
2200-2600 706 86% 12% 1% 1%
2600+ 58 60% 40% — —
Évolution par décennie (% des parties)
Décennie N parties 9.Qd3 9.Qc3 9.Qb3 9.Qxb5
1940s 1 100% — — —
1950s 4 100% — — —
1960s 12 100% — — —
1970s 10 80% 20% — —
1980s 106 95% 2% 1% 2%
1990s 120 96% 1% 3% —
2000s 210 93% 2% 1% 1%
2010s 564 87% 10% 1% 1%
2020s 279 72% 26% 1% 0%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
9.Qd3 87% 72% ▼ -15.4%
9.Qc3 10% 26% ▲ +16.1%
9.Qb3 1% 1% +0.2%
9.Qxb5 1% 0% -0.4%
Joueurs célèbres
Champions du monde dans cette position
Anand, Viswanathan — 2 parties
Ju, Wenjun — 2 parties
Ding, Liren — 1 partie
Parties historiques
9.Qd3 — 86.6% (1131 parties)
1949 — Abrahams, Gerald vs Horne, Dennis Morton — 0-1 — Felixstowe
1951 — Lachmann, Hans G vs Hantke Rolf — 1/2-1/2 — Minden
1951 — Ivkov, Borislav vs Janosevic, Dragoljub — 1/2-1/2 — Sarajevo BIH
1956 — Krznaric, Luka vs Di Camillo, Attilio — 1/2-1/2 — Montreal CAN
1959 — Rossetto, Hector vs Ivkov, Borislav — 1/2-1/2 — Mar del Plata ARG
9.Qc3 — 10.7% (140 parties)
1971 — De Meo Arbore, Tancredi Michele vs Tatai, Igor — 0-1 — Rome ITA
1979 — Ftacnik, Lubomir vs Petran, Peter — 1-0 — Dolny Kubin
1986 — Spears, Nicholas vs Basanta, Gary — 0-1 — Victoria CAN
1986 — Weitthoff, J. vs Schulien, Charles — 0-1 — Ohio Congress
1999 — Terzic, Safet vs Stoer, Andreas — 1-0 — Bayern
9.Qb3 — 1.1% (15 parties)
1988 — Vrijbloed vs Leek, John — 1/2-1/2 — corr Netherlands
1991 — Alonso Perez, Jose Ramon vs Acebal Muniz, Antonio — 0-1 — Aviles ESP
1991 — Lauridsen, Benny vs Pedersen, Nicolai Vesterbaek — 0-1 — Aarhus DEN
1992 — Garancovsky, Pavol vs Slapak, Zdenek — 0-1 — Czechoslovakia
1994 — Taksrud, Vidar vs Glenne, Bjorn Erik — 1/2-1/2 — Norway
9.Qxb5 — 0.8% (10 parties)
1988 — Bleis, Christian, Prof. Dr. vs Sonntag, Hans-Hubert — 0-1 — Karlsruhe GER tt NRW
1988 — Hodgson, Julian M vs Karolyi, Tibor — 1/2-1/2 — Kecskemet HUN
2003 — Konik, Michael, Dr. vs Mueller, Maximilian — 0-1 — Griesheim
2003 — Cortegoso, Martin vs Monier, Raul — 0-1 — Mendoza ARG
2007 — Skwarnicki, Adam vs Goslawski, Michal — 1-0 — Rewal