E55e - 9.Qe2 a6 - Main Line Bronstein [+0.09]

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E55e — Main Line Bronstein
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 9.Qe2 a6
Eval: [+0.09]
Les coups candidats
10.a3 — 43.0% (131 parties)
Ambassadeurs : Polugaevsky, Lev (3x), Portisch, Ferenc (3x), Donner, Jan-Hein (3x), Uhlmann, Wolfgang (2x), Reshevsky, Samuel (2x), Pritchett, Craig W (2x), Hein-Unzicker, Wolfgang (2x), Johansson, Martin 1979 (2x)
10.a4 — 38.0% (116 parties)
Ambassadeurs : Panno, Oscar (4x), Antoshin, Vladimir S (3x), Donner, Jan-Hein (3x), Zurakhov, Vladlen Y (3x), Hybl, Jakub (3x), Azmaiparashvili, Zurab (3x), Boleslavsky, Isaac (2x), Flum, Gerhard (2x)
10.Rd1 — 8.9% (27 parties)
Ambassadeurs : Kosten, Anthony C. (2x), Sofrevski, Jovan (1x), Puc, Stojan (1x), Kazic, Bozidar (1x), Borsony, Valt (1x), Geller, Efim P. (1x), Boleslavsky, Isaac (1x), Raisa, Unto (1x)
10.Bd3 — 8.5% (26 parties)
Ambassadeurs : Lombard, Andre (2x), Smyslov, Vasily (2x), Petersen, Flemming Petri (1x), Johansson, Ingi Randver (1x), Smyslov, Vladimir (1x), Lombardy, William J (1x), Ogaard, Leif (1x), Thorbergsson, Freysteinn (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 10.a3 10.a4 10.Rd1 10.Bd3
<1800 2 50% 50% — —
1800-2200 42 50% 31% 7% 7%
2200-2600 134 43% 33% 10% 12%
2600+ 10 40% 50% — 10%
Évolution par décennie (% des parties)
Décennie N parties 10.a3 10.a4 10.Rd1 10.Bd3
1950s 19 37% 37% 26% —
1960s 62 40% 52% 6% 2%
1970s 40 32% 45% 8% 12%
1980s 24 62% 38% — —
1990s 23 35% 26% 22% 17%
2000s 48 44% 27% 4% 25%
2010s 82 48% 35% 9% 5%
2020s 7 43% 29% 14% —
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
10.a3 48% 43% ▼ -4.7%
10.a4 35% 29% ▼ -6.8%
10.Rd1 9% 14% ▲ +5.7%
10.Bd3 5% 0% ▼ -4.9%
Joueurs célèbres
Champions du monde dans cette position
Smyslov, Vladimir — 2 parties
Kasparov, Garry — 2 parties
Karpov, Aleksandr — 1 partie
Parties historiques
10.a3 — 43.0% (131 parties)
1955 — Udovcic, Mijo vs Karaklajic, Nikola — 1-0 — Zagreb CRO
1956 — Middleton, Ian vs Karaklajic, Nikola — 0-1 — Moscow RUS
1957 — Turner, Abe J vs Bisguier, Arthur B — 1-0 — New York, NY USA
1957 — Lutikov, Anatoly S vs Gipslis, Aivars — 1/2-1/2 — Sverdlovsk
1958 — Uhlmann, Wolfgang vs Handel, Horst — 1-0 — GDR-ch Schkopau GER
10.a4 — 38.0% (116 parties)
1957 — Najdorf, Miguel vs Kotov Lundqvist, Alex — 1-0 — Mar del Plata ARG
1957 — Kluger, Gyula vs Rejfir, Josef — 1-0 — Varna BUL
1957 — Najdorf, Miguel vs Kotov Lundqvist, Alex — 1-0 — Mar del Plata ARG
1958 — Boleslavsky, Isaac vs Zurakhov, Vladlen Y — 1-0 — ?
1958 — Boleslavsky, Isaac vs Zurakhov, Vladlen Y — 1-0 — Kiev UKR
10.Rd1 — 8.9% (27 parties)
1953 — Bolbochan, J. vs Rossetto, Hector — 1/2-1/2 — Mar del Plata ARG
1955 — Minev, Nikolay N vs Karaklajic, Nikola — 1/2-1/2 — Zagreb CRO
1957 — Geller, Efim P. vs Boleslavsky, Isaac — 1/2-1/2 — Kiev UKR
1958 — Sofrevski, Jovan vs Puc, Stojan — 1/2-1/2 — Sarajevo BIH
1958 — Kazic, Bozidar vs Borsony, Valt — 1/2-1/2 — ?
10.Bd3 — 8.5% (26 parties)
1967 — Petersen, Flemming Petri vs Johansson, Ingi Randver — 0-1 — Halle GER
1970 — Gligorić, Svetozar vs Unzicker, Wolfgang — 1/2-1/2 — Lugano SUI
1974 — Ogaard, Leif vs Thorbergsson, Freysteinn — 1-0 — Reykjavik ISL
1976 — Lombard, Andre vs Smyslov, Vladimir — 1/2-1/2 — Biel izt
1976 — Lombard, Andre vs Smyslov, Vasily — 1/2-1/2 — Biel IZ