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D14a — Exchange
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.cxd5 cxd5 5.Nc3 Nc6 6.Bf4 Bf5
Eval: [+0.36]
Les coups candidats
Ambassadeurs : Meduna, Eduard (55x), Andersson, Ulf (28x), Nenciulescu, Silviu (27x), Dao, Thien Hai (25x), Popov, Luben (23x), ? (23x), Velikov, Petar (19x), Rashkovsky, Nukhim N (16x)
7.Qb3 — 8.3% (698 parties)
Ambassadeurs : Campani, Paolo (8x), Erigaisi Arjun (7x), Ellis, Les (5x), Sumets, Andrey (5x), Carter, Maurice H (5x), Manarin, Franco (5x), Dubov, Daniil (5x), Voiculescu, Costel (4x)
7.Rc1 — 1.3% (107 parties)
Ambassadeurs : Voyska, Margarita (3x), Matlak, Marek (2x), Maderna, Carlos (1x), Pomar Salamanca, Arturo (1x), Nielsen, Bjorn (1x), Yanofsky, Daniel (1x), Rankis, August (1x), Riedmiller, Max (1x)
7.a3 — 0.8% (65 parties)
Ambassadeurs : Reyes Cortés, Rafael (4x), Yee, Lorne (2x), Vencl, Radivoje (2x), Vetter, Udo (2x), Hernández Delgado, José Angel (2x), Al Bader, Abdelrahman (1x), Matzat, Andre (1x), Czegledi, Zsolt (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 7.e3 7.Qb3 7.Rc1 7.a3
<1800 173 79% 14% 2% 3%
1800-2200 2182 83% 13% 1% 1%
2200-2600 4416 92% 6% 1% 0%
2600+ 269 88% 10% 0%
Évolution par décennie (% des parties)
Décennie N parties 7.e3 7.Qb3 7.Rc1 7.a3
1920s 12 83% 17%
1930s 26 54% 46%
1940s 64 92% 3% 5%
1950s 53 91% 8% 2%
1960s 153 97% 3%
1970s 221 97% 2% 1%
1980s 712 97% 1% 1% 0%
1990s 1414 94% 3% 0% 1%
2000s 2247 92% 5% 1% 1%
2010s 2792 84% 12% 2% 1%
2020s 740 73% 22% 2% 1%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
7.e3 84% 73% ▼ -10.9%
7.Qb3 12% 22% ▲ +9.4%
7.Rc1 2% 2% +0.3%
7.a3 1% 1% +0.3%
Joueurs célèbres
Champions du monde dans cette position
Euwe, Max — 8 parties
Smyslov, Vladimir — 8 parties
Botvinnik, Mikhail — 6 parties
Carlsen, Magnus — 5 parties
Kramnik, Vladimir — 3 parties
Kasparov, Garry — 2 parties
Gukesh D — 2 parties
Lasker, Emanuel — 1 partie
Alekhine, Alexander — 1 partie
Tal, Mikhail — 1 partie
Anand, Viswanathan — 1 partie
Parties historiques
7.e3 — 88.8% (7490 parties)
1923 — Marshall, Frank vs Santasiere, Anthony — 1/2-1/2 — Lake Hopatcong
1924 — Kier, Aage vs Loewenborg, Otto von — 0-1 — Copenhagen DEN
1925 — Asztalos, Lajos vs Kitaeff Mattison, Andres Constantin — 1/2-1/2 — Debrecen HUN
1925 — Apscheneek, Fricis vs Hromadka, Karel — 1-0 — Bromley
1925 — Voellmy, Erwin vs Hromadka, Karel — 0-1 — Bromley
7.Qb3 — 8.3% (698 parties)
1925 — Matisons, Hermanis vs Hromadka, Karel — 1-0 — Bromley
1928 — Przepiorka, Dawid vs Becker, Albert — 1-0 — The Hague NED
1930 — Thorvaldsson, Einar vs Krogdahl, Arne — 1-0 — Hamburg GER
1931 — Spielmann, Rudolf vs Pirc, Vasja — 1/2-1/2 — Ljubljana m
1933 — Vukovic, Sava vs Petrovic, Vojislav — 1-0 — Belgrade SRB
7.Rc1 — 1.3% (107 parties)
1946 — Rankis, August vs Riedmiller, Max — 1-0 — Augsburg GER
1947 — Nielsen, Bjorn vs Yanofsky, Daniel — 0-1 — Copenhagen DEN
1949 — Maderna, Carlos vs Pomar Salamanca, Arturo — 1/2-1/2 — Mar del Plata ARG
1956 — Rantanen, Matti vs Muhring, Willem Jan — 1/2-1/2 — Moscow olm fin-B
1970 — Dobrovolsky, Ladislav vs Skacel Bohuslav — 1/2-1/2 — Harrachov
7.a3 — 0.8% (65 parties)
1986 — Czegledi, Zsolt vs Polajzer, Danilo — 1/2-1/2 — Budapest HUN
1989 — Al Bader, Abdelrahman vs Matzat, Andre — 0-1 — Porz op22 Porz GER
1992 — Wegener Javier vs Caso Pardo Andres — 0-1 — Asturias
1993 — Mantzouneas, Nikolaos vs Kasueschke, Gregor — 0-1 — Wch Seniors Bad Wildbad GER
1994 — Kielgast, Ottomar vs Andersen, Uwe — 1/2-1/2 — Schwabstedt