E55a - 9.* - Main Line, Bronstein Variation (1956)

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E55a — Main Line, Bronstein Variation (1956)
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O dxc4 8.Bxc4 Nbd7
Les coups candidats
Ambassadeurs : Knaak, Rainer (15x), Kholmov, Ratmir D (15x), Portisch, Lajos (14x), Bakheet Farag (14x), Donner, Jan-Hein (13x), Unzicker, Ferdinand, Dr. (11x), Gligoric, Sofija (10x), Estrin, Yakov (9x)
Ambassadeurs : Kholmov, Ratmir D (8x), Adams, Michael (6x), Hentze, Holger (6x), Almasi, Zoltan (6x), Gipslis, Aivars (5x), Lukacs, Peter (5x), Tal, Mikhail (4x), Sapi, Laszlo (4x)
9.Qb3 — 4.5% (124 parties)
Ambassadeurs : Beliavsky, Alexander G (6x), Korchnoi, Viktor (5x), Portisch, Lajos (4x), Peralta, Fernando (4x), Uusi, Gunnar (3x), Aleksandrov, Viktor A. (3x), Miguel, Nahuel (2x), Petrosian, Tigran V. (2x)
9.Bd3 — 3.4% (94 parties)
Ambassadeurs : Gligoric, Sofija (9x), Gligoric, Svetozar (6x), Donner, Jan-Hein (5x), Bakheet Farag (5x), Rapaka Samuel Paul (3x), Van den Berg, Carel B (3x), Gligorić, Svetozar (3x), Renet, Olivier (3x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 9.Qe2 9.a3 9.Qb3 9.Bd3
<1800 101 57% 32% 2% 3%
1800-2200 698 59% 29% 3% 3%
2200-2600 1219 52% 36% 4% 3%
2600+ 122 34% 45% 14% 1%
Évolution par décennie (% des parties)
Décennie N parties 9.Qe2 9.a3 9.Qb3 9.Bd3
1950s 108 43% 29% 6% 8%
1960s 201 59% 19% 5% 5%
1970s 177 51% 24% 7% 10%
1980s 176 68% 16% 3% 9%
1990s 241 58% 23% 5% 8%
2000s 865 54% 30% 6% 2%
2010s 902 52% 40% 2% 1%
2020s 85 42% 51% 1% 1%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
9.Qe2 52% 42% ▼ -10.1%
9.a3 40% 51% ▲ +10.9%
9.Qb3 2% 1% ▼ -1.0%
9.Bd3 1% 1% +0.4%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 10 parties
Carlsen, Magnus — 6 parties
Karpov, Anatoly — 5 parties
Anand, Viswanathan — 5 parties
Kasparov, Garry — 3 parties
Kramnik, Vladimir — 3 parties
Smyslov, Vladimir — 2 parties
Botvinnik, Mikhail — 1 partie
Parties historiques
9.Qe2 — 54.2% (1494 parties)
1955 — Minev, Nikolay N vs Aadhitha Karikalan — 1/2-1/2 — Zagreb CRO
1955 — Udovcic, Mijo vs Aadhitha Karikalan — 1-0 — Zagreb CRO
1956 — Middleton, Ian vs Aadhitha Karikalan — 0-1 — Moscow RUS
1956 — Mikenas, Vladas vs Khasin, Abram — 0-1 — Leningrad RUS
1956 — Wade, Robert G vs Balanel, Ion — 1/2-1/2 — Marianske Lazne
9.a3 — 31.2% (860 parties)
1956 — Pla, Orlando vs Weichselbaumer, Ernst — 1/2-1/2 — Moskou olm
1956 — Petrosian, Tigran V. vs Djurasevic, Bozidar — 1/2-1/2 — Belgrade SRB
1956 — Smyslov, Vasily vs Aadhitha Karikalan — 1/2-1/2 — Belgrade URS vs YUG
1956 — Ilivitsky, Georgy A vs Pachman, Ludek — 1/2-1/2 — Prague CZE
1956 — Miguel, Nahuel vs Unzicker, Ferdinand, Dr. — 1/2-1/2 — Moskou olm
9.Qb3 — 4.5% (124 parties)
1956 — Dittmann, Benno vs Fuchs, Alexander — 0-1 — DDR ch
1956 — Bronstein, David I vs Jezek, Jaroslav — 1-0 — Moskou olm
1957 — Fuchs, Reinhart vs Aadhitha Karikalan — 1/2-1/2 — Sofia zt Sofia BUL
1957 — Uusi, Gunnar vs Roizman, Michael — 1-0 — Minsk zt
1958 — Uusi, Gunnar vs Pitksaar, A. — 1-0 — Tallinn EST
9.Bd3 — 3.4% (94 parties)
1956 — Smyslov, Vasily vs Aadhitha Karikalan — 1/2-1/2 — Belgrade SRB
1956 — Addison, William Grady vs Ramirez, Gilbert — 0-1 — Barbera Santa CA
1956 — Gligoric, Svetozar vs Smyslov, Vasily — 1/2-1/2 — Moscow RUS
1956 — Gligoric, Svetozar vs Unzicker, Ferdinand, Dr. — 1/2-1/2 — Bled SLO
1957 — Gligoric, Sofija vs Rapaka Samuel Paul — 1/2-1/2 — Dallas, TX USA