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A30e — Symmetrical, b6 System
1.c4 c5 2.Nf3 Nf6 3.g3 b6
Les coups candidats
4.Bg2 — 99.0% (7055 parties)
Ambassadeurs : Andersson, Ulf (78x), Roeder, Matthias (46x), McNab, Colin A (42x), Ftacnik, Lubomir (39x), Suba, Mihai (30x), Stohl, Igor (25x), Pigusov, Evgeny (24x), Szekely, Peter (23x)
4.Nc3 — 0.7% (52 parties)
Ambassadeurs : Tokatlidis, Haralambos (1x), Dalschaert, Didier (1x), Yudasin, Leonid (1x), Levin, Felix (1x), White, Russell (1x), Pritchett, Craig W (1x), Spiridonov, Nikola (1x), Badii, Madjid (1x)
4.b3 — 0.2% (11 parties)
Ambassadeurs : Benoit, Michel (1x), Villeneuve, Alain (1x), Ilinsky, Vladimir (1x), Gornyak, Yu (1x), Vujovic, Milorad M (1x), Govedarica, Radovan (1x), Kalwa, Norbert, Dr. (1x), Gentilleau, Jean-Philippe (1x)
4.d3 — 0.1% (9 parties)
Ambassadeurs : Namzhilov, Tsyren (1x), Semeniuk, Alexander A (1x), Davis, Tony (1x), ? (1x), Nestorovic, Vladimir (1x), Tatenhorst, Volker (1x), Antipin, Alexey (1x), Makarov, Sergey (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 4.Bg2 4.Nc3 4.b3 4.d3
<1800 156 97% 2% 1%
1800-2200 1689 98% 1% 0% 0%
2200-2600 4549 99% 0% 0% 0%
2600+ 272 100% 0%
Évolution par décennie (% des parties)
Décennie N parties 4.Bg2 4.Nc3 4.b3 4.d3
1950s 20 100%
1960s 30 100%
1970s 202 100% 0%
1980s 937 99% 0% 0% 0%
1990s 1210 99% 0% 0% 0%
2000s 2109 99% 1% 0% 0%
2010s 2184 99% 1% 0% 0%
2020s 437 98% 1% 0%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4.Bg2 99% 98% ▼ -0.9%
4.Nc3 1% 1% ▲ +0.6%
4.b3 0% 0% +0.4%
4.d3 0% 0% -0.1%
Joueurs célèbres
Champions du monde dans cette position
Karpov, Anatoly — 10 parties
Kasparov, Garry — 10 parties
Tal, Mikhail — 10 parties
Kramnik, Vladimir — 10 parties
Carlsen, Magnus — 7 parties
Botvinnik, Mikhail — 6 parties
Anand, Viswanathan — 6 parties
Ding, Liren — 2 parties
Hou, Yifan — 1 partie
Ju, Wenjun — 1 partie
Gukesh D — 1 partie
Parties historiques
4.Bg2 — 99.0% (7055 parties)
1950 — GIDEON SUNDAY vs Eugenio, Sarah De Oliveira — 1-0 — Amsterdam NED
1950 — Bobekov, Radko vs Tsvetkov, Alexandar K — 1/2-1/2 — Sofia BUL
1950 — Flohr, Salo vs Keres, Paul — 0-1 — Moskou ch-URS
1950 — Laszlo, Csaba vs Kluger, Gyula — 0-1 — Budapest HUN
1952 — Botvinnik, Mikhail vs Kan, Ilya A — 1-0 — Moscow RUS
4.Nc3 — 0.7% (52 parties)
1979 — White, Russell vs Pritchett, Craig W — 0-1 — SCO Glasgow Herald
1983 — Yudasin, Leonid vs Levin, Felix — 1/2-1/2 — Nikolaev UKR
1988 — Tokatlidis, Haralambos vs Dalschaert, Didier — 0-1 — Zalaegerszeg
1989 — Spiridonov, Nikola vs Badii, Madjid — 1-0 — Paris FRA
1990 — Rokitta, Norbert vs Salov, Sergej — 0-1 — ?
4.b3 — 0.2% (11 parties)
1987 — Benoit, Michel vs Villeneuve, Alain — 0-1 — Rouen ch-FRA
1988 — Ilinsky, Vladimir vs Gornyak, Yu — 1/2-1/2 — USSR Tch-9 bd1
1994 — Vujovic, Milorad M vs Govedarica, Radovan — 0-1 — Vrbas YUG
2000 — Kalwa, Norbert, Dr. vs Gentilleau, Jean-Philippe — 0-1 — Naujac sur Mer FRA
2004 — Bareev, Evgeny vs Gelfand, Boris — 1/2-1/2 — Monte Carlo MNC
4.d3 — 0.1% (9 parties)
1982 — Namzhilov, Tsyren vs Semeniuk, Alexander A — 0-1 — Soviet Union
1988 — Davis, Tony vs ? — 0-1 — Melbourne AUS
1997 — Nestorovic, Vladimir vs Tatenhorst, Volker — 1-0 — Bled,SLO op18
2004 — Antipin, Alexey vs Makarov, Sergey — 1-0 — ?
2004 — Zlotnikov, Mikhail vs Jungman, Gerard J — 1-0 — Las Vegas, NV USA