B64a - 9…* - Richter-Rauzer Variation, Classical Variation (1937)

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B64a — Richter-Rauzer Variation, Classical Variation (1937)
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 Be7 8.O-O-O O-O 9.f4
Les coups candidats
Ambassadeurs : Hildebrand, Gerald (47x), Kotronias, Vasilios (46x), Inkiov, Ventzislav (16x), ? (14x), Kramnik, Vladimir (13x), Yudasin, Leonid (13x), Anand, Viswanathan (12x), Dembo, Yelena (12x)
Ambassadeurs : Gurevich, Dmitry (24x), Pergel, Laszlo (19x), Fishbein, Alexander (18x), Rodriguez Cespedes, Amador (12x), Matulovic, Milan (11x), Kupreichik, Viktor D (11x), Simal Moreira, Leonardo (11x), Geller, Efim P. (10x)
9…d5 — 3.4% (164 parties)
Ambassadeurs : Tal, Mikhail (9x), Furman, Boris (8x), Legrand, Stephane (6x), Radulov, Ivan (5x), Minev, Nikolay N (3x), Korchnoi, Viktor (3x), Brooks, Michael (3x), Diez del Corral, Jesus (2x)
9…a6 — 2.8% (136 parties)
Ambassadeurs : Szabo, Laszlo (3x), Chemin, Vitorio (3x), Keres, Paul (2x), Heinicke, Herbert (2x), Vogel, Robert (2x), OBrien, Erik Michael (1x), Neustadt, Tatjana (1x), Dominguez, Cristobal (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 9…Nxd4 9…h6 9…d5 9…a6
<1800 183 52% 32% 4% 5%
1800-2200 1352 59% 30% 4% 4%
2200-2600 2171 53% 40% 2% 1%
2600+ 103 66% 32% — —
Évolution par décennie (% des parties)
Décennie N parties 9…Nxd4 9…h6 9…d5 9…a6
1950s 198 40% 29% 8% 5%
1960s 142 35% 27% 15% 4%
1970s 136 34% 40% 13% 4%
1980s 500 35% 60% 1% 1%
1990s 983 55% 35% 2% 3%
2000s 1308 61% 29% 3% 3%
2010s 1328 58% 33% 3% 3%
2020s 197 65% 25% 4% 2%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
9…Nxd4 58% 65% ▲ +7.4%
9…h6 33% 25% ▼ -8.6%
9…d5 3% 4% ▲ +1.0%
9…a6 3% 2% ▼ -1.0%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 10 parties
Kramnik, Vladimir — 10 parties
Anand, Viswanathan — 10 parties
Karpov, Anatoly — 8 parties
Kasparov, Garry — 3 parties
Carlsen, Magnus — 3 parties
Parties historiques
9…Nxd4 — 54.1% (2592 parties)
1950 — Castaldi, Vincenzo vs Barden, Leonard — 1-0 — Hastings ENG
1950 — Castaldi, Vincenzo vs Barden, Leonard — 1-0 — Hastings ENG
1951 — Zagorovsky, Vladimir vs Ilivitsky, Georgy A — 1/2-1/2 — Tbilisi GEO
1951 — Zagorovsky vs Ilivitsky, Georgy A — 1/2-1/2 — USSR
1951 — Byvshev, Vasily vs Lyskov, Ivan N — 0-1 — ?
9…h6 — 34.7% (1665 parties)
1953 — Djurasevic, Bozidar vs Bogdanovic, Rajko — 1/2-1/2 — Zagreb CRO
1954 — Kolvig, Bent vs Andersen, Henrik — 1-0 — Copenhagen DEN
1954 — Zagorovsky, Vladimir vs Livshin, Iosif — 1-0 — Moscow RUS
1954 — Toran Albero, Roman vs Jacob, Franz — 1-0 — Munich GER
1954 — Sokolsky, Alexey vs Livshin, Iosif — 1-0 — Kiev ch-URS
9…d5 — 3.4% (164 parties)
1955 — Diez del Corral, Jesus vs Taimanov, Mark — 0-1 — Hastings ENG
1955 — Sokolsky, Alexey vs Saigin, Vladimir — 1-0 — Kiev UKR
1955 — Tal, Mikhail vs Korchnoi, Viktor — 1/2-1/2 — USSR
1955 — Nei, Iivo vs Tal, Mikhail — 1/2-1/2 — URS-ch sf Riga LAT
1955 — Kashdan, Isaac vs Taimanov, Mark — 1/2-1/2 — Moscow RUS
9…a6 — 2.8% (136 parties)
1952 — Lehmann, Heinz vs Heinicke, Herbert — 1/2-1/2 — Hagen
1954 — Kupper, Josef vs Kelly, Terry — 1/2-1/2 — Amsterdam olm
1955 — Bisguier, Arthur B vs Decker, Arnold Sheldon — 0-1 — New York, NY USA
1955 — Keres, Paul vs Szabo, Laszlo — 1-0 — ?
1955 — Keres, Paul vs Szabo, Laszlo — 1-0 — Budapest HUN