C81b - 9…Bc5 - Open, Keres Attack (1947)

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C81b — Open, Keres Attack (1947)
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.Qe2 Bc5
Les coups candidats
10.Be3 — 69.1% (264 parties)
Ambassadeurs : Honfi, Karoly (7x), Grivas, Efstratios (5x), Lombart, Philippe (5x), Anderson, Frank Ross (4x), Matulovic, Milan (4x), Abanin, Vladimir (4x), ? (4x), Rossetto, Hector (3x)
10.Nbd2 — 24.6% (94 parties)
Ambassadeurs : Honfi, Karoly (3x), Estrin, Yakov (3x), Grivas, Efstratios (3x), Jansa, Vlastimil (2x), Weiss, Augustin (2x), Sumar, Julio (2x), Gharamian, Tigran (2x), Kozak, Alexander (2x)
10.c3 — 4.2% (16 parties)
Ambassadeurs : Georgescu, Vasile-Maxim (1x), Troianescu, Octav (1x), Draxl, Rudolph (1x), Anderson, Frank Ross (1x), Karim, Firrat (1x), Zapana, Wilson (1x), Maus, Siegfried (1x), Pieper-Emden, Carsten (1x)
10.a4 — 1.0% (4 parties)
Ambassadeurs : Ousatchi, Mark (1x), Shianovsky, Vladislav I (1x), Nilsson, Zandor (1x), Hult, Bjorn (1x), Kovacs, Laszlo (1x), Haag, Ervin (1x), Cygan, Tomasz (1x), Kozdryk, Andrzej (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 10.Be3 10.Nbd2 10.c3 10.a4
<1800 16 56% 38% 6% —
1800-2200 108 64% 31% 4% 1%
2200-2600 124 76% 20% 2% —
2600+ 4 75% 25% — —
Évolution par décennie (% des parties)
Décennie N parties 10.Be3 10.Nbd2 10.c3 10.a4
1950s 25 52% 40% 4% 4%
1960s 46 74% 20% 2% 4%
1970s 37 70% 22% 8% —
1980s 36 72% 19% 6% —
1990s 75 77% 16% 4% 1%
2000s 64 73% 17% 8% —
2010s 66 62% 35% 2% —
2020s 33 58% 42% — —
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
10.Be3 62% 58% ▼ -4.5%
10.Nbd2 35% 42% ▲ +7.6%
10.c3 2% 0% ▼ -1.5%
10.a4 0% 0% +0.0%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 1 partie
Parties historiques
10.Be3 — 69.1% (264 parties)
1950 — Mertins, Klaus vs Bachl, Anton — 0-1 — Northeim
1950 — Weiss, Adam vs Watzl — 0-1 — cr.
1953 — Pedersen, Eigil vs Larsen, Bent — 1/2-1/2 — Horsens
1953 — Shagalovich, Abo vs Chestnov, Vitaliy A. — 0-1 — USSR
1953 — Luczynowicz, Waclaw vs Szymanski, Aleksander — 0-1 — Krakow POL
10.Nbd2 — 24.6% (94 parties)
1950 — Skold, Kristian vs Poulsen, Christian — 1/2-1/2 — Dubrovnik olm
1950 — Konstantinov, Alexander vs Estrin, Yakov — 1/2-1/2 — Gorky
1950 — Konstantinov, Alexandr vs Estrin, Yakov — 1/2-1/2 — URS-ch sf Gorky
1950 — Flores Alvarez, Rodrigo vs Sumar, Julio — 1-0 — Dubrovnik CRO
1950 — Flores, Ranz Kirby Anthony vs Sumar, Julio — 1-0 — Dubrovnik olm
10.c3 — 4.2% (16 parties)
1955 — Draxl, Rudolph vs Anderson, Frank Ross — 1-0 — Toronto CAN
1967 — Georgescu, Vasile-Maxim vs Troianescu, Octav — 0-1 — ?
1973 — Nepomuceno, Brenner vs Casacobos — 1-0 — ESP
1976 — Karim, Firrat vs Zapana, Wilson — 0-1 — Caracas VEN
1976 — Bade, Heidrun vs Cheng, Winter — 1/2-1/2 — Groeditz
10.a4 — 1.0% (4 parties)
1953 — Nilsson, Zandor vs Hult, Bjorn — 1-0 — Oerebro
1960 — Ousatchi, Mark vs Shianovsky, Vladislav I — 1/2-1/2 — ?
1965 — Kovacs, Laszlo vs Haag, Ervin — 1/2-1/2 — Budapest HUN
1991 — Cygan, Tomasz vs Kozdryk, Andrzej — 1/2-1/2 — Pyskovice