E55a - 8…Nbd7 - Main Line Bronstein Variation

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E55a — Main Line Bronstein Variation
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
Eval: [+0.24]
Les coups candidats
Ambassadeurs : Knaak, Rainer (19x), Farago, Ivan (18x), Kholmov, Ratmir D (15x), Portisch, Lajos (13x), Donner, Jan-Hein (11x), Suba, Mihai (10x), Estrin, Yakov (9x), Unzicker, Wolfgang (9x)
Ambassadeurs : Van der Stricht, Geert (10x), Korobov, Anton (10x), Kholmov, Ratmir D (8x), Farago, Ivan (8x), Aleksandrov Ivanchev, Aleksandar (8x), Lukacs, Peter (7x), Hentze Holger (6x), Adams, Michael (6x)
9.Qb3 — 4.5% (124 parties)
Ambassadeurs : Beliavsky, Alexander G (8x), Korchnoi, Viktor (5x), Portisch, Lajos (4x), Vaisser, Anatoly (4x), Peralta, Fernando (4x), Uusi, Gunnar (3x), Ribli, Zoltan (3x), Aleksandrov Ivanchev, Aleksandar (3x)
9.Bd3 — 3.4% (94 parties)
Ambassadeurs : Gligoric, Svetozar (15x), Farago, Ivan (6x), Donner, Jan-Hein (5x), Gligorić, Svetozar (4x), Reshevsky, Samuel (3x), Ribli, Zoltan (3x), Renet, Olivier (3x), Miralles, Gilles (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 30 57% 27% 3% 7%
1800-2200 550 60% 30% 2% 1%
2200-2600 1321 53% 35% 4% 4%
2600+ 133 34% 44% 16% 1%
Évolution par décennie (% des parties)
Décennie N parties 9.Qe2 9.a3 9.Qb3 9.Bd3
1940s 1 100% — — —
1950s 110 43% 28% 6% 9%
1960s 203 59% 19% 5% 5%
1970s 177 51% 24% 7% 10%
1980s 174 68% 16% 3% 9%
1990s 239 59% 23% 5% 8%
2000s 864 55% 30% 7% 2%
2010s 896 52% 40% 2% 1%
2020s 76 45% 50% 1% 1%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
9.Qe2 52% 45% ▼ -7.7%
9.a3 40% 50% ▲ +10.3%
9.Qb3 2% 1% ▼ -0.9%
9.Bd3 1% 1% ▲ +0.6%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 9 parties
Smyslov, Vladimir — 8 parties
Carlsen, Magnus — 6 parties
Anand, Viswanathan — 5 parties
Karpov, Anatoly — 3 parties
Karpov, Aleksandr — 3 parties
Kasparov, Garry — 2 parties
Kramnik, Vladimir — 2 parties
Euwe, Max — 1 partie
Botvinnik, Mikhail — 1 partie
Parties historiques
9.Qe2 — 54.5% (1492 parties)
1948 — Ilivitsky, Georgy A vs Lisitsin, Georgy — 1-0 — Moskou ch-URS
1955 — Udovcic, Mijo vs Karaklajic, Nikola — 1-0 — Zagreb CRO
1955 — Minev, Nikolay N vs Karaklajic, Nikola — 1/2-1/2 — Zagreb CRO
1956 — Wade, Robert G vs Balanel, Ion — 1/2-1/2 — Marianske Lazne
1956 — Najdorf, Miguel vs Padevsky, Nikola — 1/2-1/2 — Moscow olm fin-A
9.a3 — 31.0% (849 parties)
1956 — Petrosian, Tigran A. vs Djurasevic, Bozidar — 1/2-1/2 — Belgrade SRB
1956 — Smyslov, Vasily vs Karaklajic, Nikola — 1/2-1/2 — Belgrade URS vs YUG
1956 — Wade, Robert G vs Ivkov, Borislav — 1/2-1/2 — Moscow RUS
1956 — Niemela, Antti vs Lungkvist L — 0-1 — olm Moscow RUS
1956 — Pla, Orlando vs Weichselbaumer, Ernst — 1/2-1/2 — Moscow RUS
9.Qb3 — 4.5% (124 parties)
1956 — Bronstein, David I vs Jezek, Jaroslav — 1-0 — Olympiad Moscow RUS
1956 — Dittmann, Sieghart vs Fuchs, Reinhart — 0-1 — GDR-ch Leipzig GER
1957 — Uusi, Gunnar vs Roizman, Abram Y — 1-0 — Minsk BLR
1957 — Fuchs, Reinhart vs Karaklajic, Nikola — 1/2-1/2 — Sofia zt Sofia BUL
1958 — Roizman, Abram Y vs Luik, Helmuth — 1-0 — Vilnius LTU
9.Bd3 — 3.4% (94 parties)
1956 — Smyslov, Vladimir vs Karaklajic, Nikola — 1/2-1/2 — Belgrade SRB
1956 — Addison, William Grady vs Ramirez, Gilbert — 0-1 — Barbera Santa CA
1956 — Gligorić, Svetozar vs Smyslov, Vasily — 1/2-1/2 — Moscow RUS
1956 — Gligoric, Svetozar vs Smyslov, Vasily — 1/2-1/2 — Moscow RUS
1956 — Gligoric, Svetozar vs Unzicker, Wolfgang — 1/2-1/2 — Bled SLO