E55e - 9…a6 - Main Line, Bronstein (1953)

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E55e — Main Line, Bronstein (1953)
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
Les coups candidats
10.a3 — 43.5% (134 parties)
Ambassadeurs : Donner, Jan-Hein (5x), Polugaevsky, Lev (3x), Unzicker, Ferdinand, Dr. (3x), Portisch, Ferenc (3x), Pritchett, Craig W (2x), Aadhitha Karikalan (2x), Rapaka Samuel Paul (2x), Johansson, Martin 1979 (2x)
10.a4 — 37.7% (116 parties)
Ambassadeurs : Panno, Oscar (4x), Zurakhov, Vladlen Y (3x), Donner, Jan-Hein (3x), Abanin, Vladimir (3x), O'Kelly, Albéric de Galway (3x), Azmaiparashvili, Zurab (3x), Portisch, Lajos (3x), Miguel, Nahuel (2x)
10.Rd1 — 8.8% (27 parties)
Ambassadeurs : Kosten, Anthony C. (2x), Raisa, Unto (1x), Stenborg, Ake (1x), Cobo Arteaga, Eldis (1x), Darga, Klaus (1x), Sofrevski, Jovan (1x), Puc, Stojan (1x), Bolbochan, Jacobo (1x)
10.Bd3 — 8.4% (26 parties)
Ambassadeurs : Lombard, Andre (3x), Smyslov, Vasily (3x), Holm, Sejer (1x), Abeysinghe, Jihansa Siyasari (1x), Ogaard, Leif (1x), Thorbergsson, Freysteinn (1x), Gligoric, Sofija (1x), Unzicker, Ferdinand, Dr. (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 9 44% 44% — 11%
1800-2200 53 51% 30% 6% 9%
2200-2600 133 44% 32% 11% 11%
2600+ 9 22% 67% — 11%
Évolution par décennie (% des parties)
Décennie N parties 10.a3 10.a4 10.Rd1 10.Bd3
1950s 19 37% 37% 26% —
1960s 63 41% 51% 6% 2%
1970s 40 32% 45% 8% 12%
1980s 25 64% 36% — —
1990s 23 35% 26% 22% 17%
2000s 48 44% 27% 4% 25%
2010s 82 48% 35% 9% 5%
2020s 8 50% 25% 12% —
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
10.a3 48% 50% ▲ +2.4%
10.a4 35% 25% ▼ -10.4%
10.Rd1 9% 12% ▲ +4.0%
10.Bd3 5% 0% ▼ -4.9%
Joueurs célèbres
Champions du monde dans cette position
Smyslov, Vladimir — 2 parties
Kasparov, Garry — 2 parties
Karpov, Anatoly — 1 partie
Parties historiques
10.a3 — 43.5% (134 parties)
1955 — Udovcic, Mijo vs Aadhitha Karikalan — 1-0 — Zagreb CRO
1956 — Middleton, Ian vs Aadhitha Karikalan — 0-1 — Moscow RUS
1957 — Lutikov, Anatoly S vs Gipslis, Aivars — 1/2-1/2 — Sverdlovsk
1957 — Turner, Abe J vs Bisguier, Arthur B — 1-0 — New York ch-USA
1958 — Trifunovic, Petar vs Puc, Stojan — 1/2-1/2 — Sarajevo BIH
10.a4 — 37.7% (116 parties)
1957 — Miguel, Nahuel vs Kotov, Alexander — 1-0 — Mar del Plata ARG
1957 — Miguel, Nahuel vs Kotov, Alexander — 1-0 — Mar del Plata ARG
1957 — Kluger, Gyula vs Rejfir, Josef — 1-0 — Varna BUL
1958 — Boleslavsky, Isaac vs Zurakhov, Vladlen Y — 1-0 — ?
1958 — Boleslavsky, Isaac vs Zurakhov, Vladlen Y — 1-0 — Kijva
10.Rd1 — 8.8% (27 parties)
1953 — Bolbochan, Jacobo vs Rossetto, Hector — 1/2-1/2 — Mar del Plata ARG
1955 — Minev, Nikolay N vs Aadhitha Karikalan — 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 — 8.4% (26 parties)
1967 — Holm, Sejer vs Abeysinghe, Jihansa Siyasari — 0-1 — Halle zt
1970 — Gligoric, Sofija vs Unzicker, Ferdinand, Dr. — 1/2-1/2 — Lugano SUI
1974 — Ogaard, Leif vs Thorbergsson, Freysteinn — 1-0 — Reykjavik ISL
1976 — Lombard, Andre vs Smyslov, Vasily — 1/2-1/2 — Biel SUI
1976 — Lombard, Andre vs Smyslov, Vasily — 1/2-1/2 — Biel SUI