B09d - 4…Bg7 5.Nf3 - Austrian (1950)

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B09d — Austrian (1950)
1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3
Les coups candidats
Ambassadeurs : Hoi, Carsten (51x), Cuijpers, Frans Andre (47x), Vadasz, Laszlo (46x), Donner, Jan-Hein (44x), Timman, Jan H (40x), Gipslis, Aivars (35x), Balcerowski, Witold (31x), McNab, Colin A (31x)
Ambassadeurs : Conterno, Dominique (58x), Zimmerman, Yuri (52x), Ker, Anthony F (34x), Van Wely, Loek (32x), Suttles, Duncan (31x), Chernin, Alexander (29x), Buchal, Stephan (23x), Timman, Jan H (21x)
5…c6 — 2.6% (879 parties)
Ambassadeurs : Ruckschloss, Karol (20x), Ilic, Ilija (4x), Balazs, Tibor (3x), Theissl Pokorna, Regina (3x), Laughlin, Steve (3x), Szekely, Stefan (3x), Beyer, Hans-Joachim (2x), Kavnatsky, Valentin (2x)
5…Bg4 — 1.8% (588 parties)
Ambassadeurs : Celestini, Mauro (3x), Wakeham, Marc (3x), Vietinghoff, Klaus (3x), Petrov, Nikolaj (3x), Tarnowski, Alfred (2x), Futo, Zsofia (2x), Popadic, Dragan (2x), Ebert, Stefan (2x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 5…O-O 5…c5 5…c6 5…Bg4
<1800 2202 68% 23% 3% 4%
1800-2200 13985 65% 28% 4% 2%
2200-2600 10419 70% 28% 1% 0%
2600+ 213 65% 32% — —
Évolution par décennie (% des parties)
Décennie N parties 5…O-O 5…c5 5…c6 5…Bg4
1950s 135 82% 10% 1% 5%
1960s 746 84% 12% 2% 1%
1970s 2007 70% 27% 1% 1%
1980s 2634 69% 27% 1% 1%
1990s 7384 66% 28% 3% 2%
2000s 9536 63% 30% 3% 2%
2010s 9391 68% 25% 3% 2%
2020s 1760 72% 23% 2% 1%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
5…O-O 68% 72% ▲ +3.2%
5…c5 25% 23% ▼ -1.7%
5…c6 3% 2% ▼ -1.1%
5…Bg4 2% 1% -0.4%
Joueurs célèbres
Champions du monde dans cette position
Anand, Viswanathan — 10 parties
Tal, Mikhail — 10 parties
Kramnik, Vladimir — 8 parties
Botvinnik, Mikhail — 4 parties
Carlsen, Magnus — 4 parties
Karpov, Anatoly — 2 parties
Fischer, Robert James — 1 partie
Kasparov, Garry — 1 partie
Gukesh D — 1 partie
Parties historiques
5…O-O — 67.0% (22503 parties)
1950 — Rossolimo, Nicolas vs Mueller, Helge — 1-0 — Dubrovnik olm
1950 — Staudte, Hans-Hilmar vs Vidmar, Milan jr — 0-1 — 9th Olympiad
1950 — Staudte, Hans-Hilmar vs Vidmar, Milan Sr — 0-1 — Dubrovnik olm
1950 — Honfi, Karoly vs Koberl, Ferenc — 0-1 — Budapest HUN
1950 — Beni, Alfred vs Castillo Bermudez, Manuel — 1-0 — Dubrovnik CRO
5…c5 — 27.1% (9109 parties)
1955 — Betak Miroslav vs Melzer, Jan — 1-0 — Prague CZE
1955 — Hostinsky, Zdenek vs Parak, Frantisek — 1/2-1/2 — Prague CZE
1956 — Dworzynski, Roman vs Partyka, Kazimierz — 0-1 — Poland
1957 — Davis, Edward vs Feuerstein, Arthur — 0-1 — Reykjavik ISL
1957 — Perez Perez, Francisco Jose vs Farre, Miguel — 1-0 — Zaragoza
5…c6 — 2.6% (879 parties)
1951 — Amaro, Lucas Ibrair vs Sumar, Julio — 1/2-1/2 — Mar del Plata ARG
1955 — Charabi, Feriel vs Mariette, Jacques — 1-0 — ?
1962 — Abiolla James vs Chipalambwe Lloyd — 1-0 — Ilford Congress
1962 — Pietzsch, Wolfgang vs Ablanedo Jimenez, Alvaro Alfonso — 1-0 — Havana CUB
1962 — Mohrlok, Dieter vs Sandor, Bela — 1-0 — Beverwijk NED
5…Bg4 — 1.8% (588 parties)
1950 — Aditya Balu Jadhav vs Naegeli, Oskar — 1-0 — Lucerne SUI
1951 — Karoly, George vs Ozols, Karlis — 1/2-1/2 — Melbourne AUS
1951 — Ursell, Philip Ashby vs Bonham, Reginald Walter — 1-0 — Swansea WLS
1952 — Tarnowski, Alfred vs Sowinski, Jerzy — 1-0 — Katowice POL
1952 — Tarnowski, Alfred vs Partyka, Kazimierz — 1-0 — Katowice POL