B88e - 7.Bb3 Be7 8.Be3 O-O 9.f4 - Sozin, Fischer Variation

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B88e — Sozin, Fischer Variation
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Bc4 Nc6 7.Bb3 Be7 8.Be3 O-O 9.f4
Les coups candidats
9…Nxd4 — 32.5% (127 parties)
Ambassadeurs : Tischbierek, Raj (4x), Bradvarevic, Aleksandar (3x), Perez Perez, Francisco Jose (3x), Fischer, Robert J (2x), Geller, Efim P. (2x), ? (2x), Filipowicz, Andrzej (2x), Ermenkov, Evgenij (2x)
9…a6 — 22.0% (86 parties)
Ambassadeurs : Meszaros, Andras (4x), Pergel, Laszlo (4x), Markus, Tibor (2x), Polgar, Judit (2x), Collins, Richard (1x), Moore, Gillian A (1x), Hoiberg, Nina (1x), Jasnikowski, Zbigniew (1x)
9…Bd7 — 18.4% (72 parties)
Ambassadeurs : Ostojic, Predrag (3x), Tatai, Stefano (3x), Milic, Borislav (2x), Filipowicz, Andrzej (2x), Matulovic, Milan (1x), Georgescu, Vasile Sr (1x), Ghitescu, Theodor (1x), Smailbegovic, Hasan (1x)
9…Na5 — 7.9% (31 parties)
Ambassadeurs : Bertok, Mario Jr. (2x), Ibrahimov, Rasul (1x), Alexander Vivasvaan Chandra (1x), Fichtl, Jiri (1x), Wexler, Bernardo (1x), McKelvie, Neil (1x), Grant, Steven (1x), Hatlebakk, Einar (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 9…Nxd4 9…a6 9…Bd7 9…Na5
<1800 3 33% 33% — —
1800-2200 87 20% 28% 15% 10%
2200-2600 207 38% 24% 18% 4%
2600+ 2 100% — — —
Évolution par décennie (% des parties)
Décennie N parties 9…Nxd4 9…a6 9…Bd7 9…Na5
1950s 3 — — 33% —
1960s 61 30% 2% 31% 20%
1970s 30 47% 20% 17% 3%
1980s 30 33% 30% 13% 3%
1990s 117 32% 28% 13% 6%
2000s 100 29% 29% 25% 5%
2010s 43 35% 19% 7% 9%
2020s 7 43% — — 14%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
9…Nxd4 35% 43% ▲ +8.0%
9…a6 19% 0% ▼ -18.6%
9…Bd7 7% 0% ▼ -7.0%
9…Na5 9% 14% ▲ +5.0%
Parties historiques
9…Nxd4 — 32.5% (127 parties)
1960 — Perez Perez, Francisco Jose vs Ghitescu, Theodor — 0-1 — Leipzig GER
1962 — Fischer, Robert J vs Geller, Efim P. — 0-1 — Curacao AHO
1962 — Alexander Ronald Cheng vs Hadi, Adrian — 1-0 — Hastings ENG
1962 — Gonzalez, Gerardo vs Sanguineti, Raúl Carlos — 0-1 — Buenos Aires ARG
1962 — Fischer, Robert J vs Olafsson, Fridrik — 1-0 — Stockholm SWE
9…a6 — 22.0% (86 parties)
1962 — Collins, Richard vs Moore, Gillian A — 1-0 — Southampton ENG
1973 — Haynes, Jacques vs Gibney, Eugene — 1-0 — corr
1974 — Jasarevic, Husein vs Galic, Zeljko — 0-1 — Sarajevo BIH
1975 — Van Riemsdijk, Herman C. vs Bronstein, Luis Marcos — 1-0 — Fortaleza BRA
1976 — Bednarski, Jacek vs Szymczak, Zbigniew — 1-0 — Ciechocinek
9…Bd7 — 18.4% (72 parties)
1959 — Vasiukov, Evgeni vs Ustinov, Georgy I — 1-0 — Moscow RUS
1960 — Georgescu, Vasile Sr vs Ghitescu, Theodor — 0-1 — Bucharest ROU
1960 — Alexander, Conol Hugh vs Barden, Leonard — 1/2-1/2 — Leicester
1961 — Matulovic, Milan vs Milic, Borislav — 0-1 — Sarajevo BIH
1962 — Ostojic, Predrag vs Smailbegovic, Hasan — 1/2-1/2 — Skopje ch17-YUG
9…Na5 — 7.9% (31 parties)
1960 — Fichtl, Jiri vs Wexler, Bernardo — 1-0 — Leipzig GER
1961 — Bozdoghina, Constantin vs Radovici, Corvin — 1/2-1/2 — Romania
1961 — Dominguez, Cristobal vs Goldenberg, Edgardo — 1/2-1/2 — Mar del Plata ARG
1962 — Ibrahimov, Rasul vs Alexander Vivasvaan Chandra — 0-1 — URS-ch30 sf Novosibirsk
1963 — Parma, Bruno vs Bertok, Mario Jr. — 1-0 — Zenica ch YUG