B67g - 9.f4 - Richter-Rauzer (1951)

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B67g — Richter-Rauzer (1951)
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 a6 8.O-O-O Bd7 9.f4
Les coups candidats
Ambassadeurs : Wosch, Arkadiusz (211x), Kozul, Zdenko (129x), Damljanovic, Branko (32x), Yermolinsky, Alex (31x), Lupulescu, Constantin (29x), Gupta, Abhijeet (28x), Mednis, Edmar J (23x), Tukmakov, Vladimir B (21x)
Ambassadeurs : Schneider, Lars-Ake (30x), Matsukevich, Vladimir Vladimirov (26x), Timman, Jan H (18x), Aigmueller, Max Ing (16x), Maki, Veijo (15x), Lukin, Andrei M (15x), Tischbierek, Raj (15x), ? (13x)
Ambassadeurs : Banas, Jan (26x), Van der Wiel, John T.H. (20x), Madl, Ildiko (20x), Bielczyk, Jacek (15x), Almarza Mato, Carlos (14x), Nijboer, Friso (13x), Nazaretyan, Tigran (13x), Andreev, Eduard (12x)
9…Qc7 — 1.8% (190 parties)
Ambassadeurs : Rodriguez Cespedes, Amador (8x), Arutinian, David (6x), Lykhin, Mark (4x), Bagaturov, Giorgi (4x), Paoli, Enrico (3x), Szabo, Laszlo (2x), Borik, Otto (2x), Altgelt, Alexander (2x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 9…b5 9…Be7 9…h6 9…Qc7
<1800 316 53% 24% 18% 3%
1800-2200 2934 54% 22% 21% 2%
2200-2600 5929 50% 27% 20% 1%
2600+ 182 58% 26% 16% —
Évolution par décennie (% des parties)
Décennie N parties 9…b5 9…Be7 9…h6 9…Qc7
1950s 252 13% 32% 46% 2%
1960s 251 28% 48% 18% 2%
1970s 602 44% 46% 9% 1%
1980s 584 39% 42% 18% 1%
1990s 1276 45% 24% 25% 4%
2000s 2448 61% 13% 23% 2%
2010s 3534 60% 16% 22% 1%
2020s 1670 32% 54% 12% 1%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
9…b5 60% 32% ▼ -27.8%
9…Be7 16% 54% ▲ +38.3%
9…h6 22% 12% ▼ -9.7%
9…Qc7 1% 1% ▼ -0.8%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 10 parties
Anand, Viswanathan — 9 parties
Kasparov, Garry — 7 parties
Hou, Yifan — 5 parties
Karpov, Anatoly — 4 parties
Ju, Wenjun — 4 parties
Carlsen, Magnus — 3 parties
Botvinnik, Mikhail — 1 partie
Ding, Liren — 1 partie
Parties historiques
9…b5 — 50.0% (5313 parties)
1951 — Barden, Leonard vs Ivkov, Borislav — 1/2-1/2 — London, University College
1954 — Zurakhov, Vladlen Y vs Byvshev, Vasily — 1/2-1/2 — URS-ch sf Leningrad RUS
1955 — Matanovic, Aleksandar vs Heinicke, Herbert — 1-0 — Hamburg GER
1956 — Khasin, Abram vs Taimanov, Mark — 0-1 — Leningrad ch-URS
1956 — Byvshev, Vasily vs Zilber, Israel — 1-0 — Leningrad RUS
9…Be7 — 26.6% (2823 parties)
1950 — Ravinsky, Grigory vs Koblencs, Alexander — 1/2-1/2 — Leningard
1950 — Kamyshov, Mikhail vs Chestnov, Vitaliy A. — 0-1 — URS-ch sf Tartu
1951 — Castiglioni, Ferruccio vs Nedeljkovic, Srecko M — 0-1 — Venice ITA
1952 — Boutteville, Cesar vs Borsony, Valt — 0-1 — ?
1953 — Olafsson, Fridrik vs Alexander Tadala — 0-1 — Hastings ENG
9…h6 — 20.7% (2196 parties)
1950 — Olafsson, Fridrik vs Boey, Josef — 1-0 — Birmingham ENG
1950 — Sebestyen, Balazs vs Benko, Pal — 1-0 — Budapest HUN
1950 — Skold, Kristian vs Ojanen, Kaarle S — 1-0 — Dubrovnik olm
1950 — Meyer, Eugene vs Heemsoth, Hermann — 0-1 — corr Blumich mem
1950 — Estrin, Yakov vs Sidorov, Anatoly — 0-1 — URS-ch sf Gorky
9…Qc7 — 1.8% (190 parties)
1951 — Samarian, Sergiu vs Milev, Zdravko — 0-1 — Bucharest ROU
1952 — Byvshev, Vasily vs Kuzminykh, Evgeny — 1-0 — Leningrad RUS
1956 — Barden, Leonard vs Kottnauer, Cenek — 0-1 — London ENG
1959 — Winiwarter, Felix vs Paoli, Enrico — 1-0 — Reggio Emilia ITA
1959 — Hindle, Owen M vs Ansell, Simon T — 1-0 — Bognor Regis