D34f - 9.Bf4 - QGD Tarrasch (1936)

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D34f — QGD Tarrasch (1936)
1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 Nf6 7.Bg2 Be7 8.O-O O-O 9.Bf4
Les coups candidats
9…Be6 — 21.5% (151 parties)
Ambassadeurs : Schweber, Samuel (3x), Naumkin, Igor (3x), Chestnov, Vitaliy A. (2x), Langeweg, Kick (2x), Kiraly, Istvan (2x), Radomsky, Viacheslav G (2x), Dzikowski, Michal (2x), Matera, Salvatore (1x)
9…Bg4 — 21.1% (148 parties)
Ambassadeurs : Verduga Zavala, Denis (2x), Zolnierowicz, Krzysztof (2x), Ghitescu, Theodor (1x), Stanciu, Traian (1x), Leski, Marc (1x), Bergmann, Jesper (1x), Sorensen, Torben (1x), Schuh, Hubert (1x)
9…c4 — 19.7% (138 parties)
Ambassadeurs : Naumkin, Igor (7x), Lida Garcia, Fernando (3x), Reides, Marcelo (3x), Gokhale, Anupama (2x), Razuvaev, Yuri S (2x), Bach, Matthias (2x), Petrosian, Tigran V. (1x), Aronin, Lev (1x)
9…a6 — 12.1% (85 parties)
Ambassadeurs : Bukal, Vladimir Jr. (1x), Pernisco, Ermanno (1x), Root, Alexey (1x), Burke, Paul (1x), Ferri Morant, Jose Angel (1x), Groffen, Hans (1x), Caetano Netto, Joaquim Gentil (1x), Toth, Peter (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 9…Be6 9…Bg4 9…c4 9…a6
<1800 36 31% 11% 19% 17%
1800-2200 292 19% 23% 18% 17%
2200-2600 277 21% 24% 25% 9%
2600+ 2 50% 50% — —
Évolution par décennie (% des parties)
Décennie N parties 9…Be6 9…Bg4 9…c4 9…a6
1950s 11 36% — 9% —
1960s 24 42% 4% 4% —
1970s 25 20% 8% 8% 4%
1980s 48 33% 29% 6% 6%
1990s 123 20% 31% 14% 12%
2000s 162 23% 25% 15% 14%
2010s 238 18% 18% 29% 13%
2020s 70 17% 16% 27% 16%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
9…Be6 18% 17% ▼ -0.5%
9…Bg4 18% 16% ▼ -1.9%
9…c4 29% 27% ▼ -2.3%
9…a6 13% 16% ▲ +2.3%
Parties historiques
9…Be6 — 21.5% (151 parties)
1954 — Ragozin, Viacheslav vs Chestnov, Vitaliy A. — 1-0 — URS-ch sf Leningrad RUS
1954 — Salov, Vitaly V. vs Chestnov, Vitaliy A. — 1-0 — Leningrad ch22-SU sf
1958 — AGBOLO, Green Laureta vs Lemvig-Fog, Malte — 1/2-1/2 — Hastings ENG
1959 — Ilivitsky, Georgy A vs Alexander G — 1-0 — Frunze KGZ
1962 — Korchnoi, Viktor vs Keres, Paul — 1/2-1/2 — Curacao ct
9…Bg4 — 21.1% (148 parties)
1969 — Ghitescu, Theodor vs Stanciu, Traian — 1/2-1/2 — Bucharest ROU
1974 — Masic, Ljubomir vs Raicevic, Vladimir — 0-1 — Sombor
1974 — Matera, Salvatore vs Nunn, John D M — 1/2-1/2 — Teesside ENG
1980 — Frias, V. vs Gligoric, Sofija — 0-1 — Lone Pine open
1981 — Carleson, Caspar vs Raaste, Eero J. — 0-1 — Stockholm SWE
9…c4 — 19.7% (138 parties)
1959 — Petrosian, Tigran V. vs Aronin, Lev — 1/2-1/2 — Moscow RUS
1969 — Moiseev, Oleg vs Yudovich, Mikhail Jr — 1-0 — Svetlogorsk
1976 — Barth, Rainer vs Mueller, Klaus Uwe — 1/2-1/2 — Spremberg
1977 — Petrosian, Arshak B vs Liavdansky, Vladimir — 1-0 — Kiev tt
1980 — Shestakov, Sergei S vs Fedorov, Vladislav — 1-0 — Volgograd RUS
9…a6 — 12.1% (85 parties)
1971 — Ferri Morant, Jose Angel vs Groffen, Hans — 1-0 — ?
1984 — Root, Alexey vs Burke, Paul — 0-1 — Vancouver
1984 — Caetano Netto, Joaquim Gentil vs Toth, Peter — 1/2-1/2 — BRA-ch 51th Cabo Frio
1989 — Bukal, Vladimir Jr. vs Pernisco, Ermanno — 1/2-1/2 — Mendrisio SUI
1990 — Daniel Fano vs Garcia Perez, Juan Carlos — 1/2-1/2 — ?