A70i —
1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Bd3 O-O 9.O-O
Eval: [+0.38]
Les coups candidats
9…Bg4 — 39.9% (458 parties)
Ambassadeurs : Moody, David W (3x), Kusnierz, Janusz (3x), Sanguineti, Raúl Carlos (2x), Korning, Peter (2x), Sage, Francois (2x), Nepomnishay, Mikhail I. (2x), Soldini, Paolo (2x), Tsonev, Boyko Stefanov (2x)
9…a6 — 33.7% (387 parties)
Ambassadeurs : Jenneborg, Seved (3x), Lopez Quevedo, Angel Carlos (2x), Gallart Zafra, Jaume (2x), Pueschel, Werner (2x), Yazovskikh, Elizaveta (2x), Fox, Jim (2x), Malbasic, Ljubisa (2x), Kostina, Nadezhda (2x)
9…Re8 — 14.3% (164 parties)
Ambassadeurs : Jeske, Mark (2x), Degterev, Pavel (2x), Goldberg, Grigory A (1x), Veltmander, Iogannes (1x), Parr, Frank (1x), Newman Caceres, Reynaldo Adolfo (1x), Aceituno Cantero, Jose Tomas (1x), De Souza Mendes, Joao (1x)
9…Na6 — 8.5% (97 parties)
Ambassadeurs : Makhlin, Mikhail (3x), Mai, Iris (2x), Ratcu, Tatiana (2x), Kutlyarov, Aleksandr (2x), Brock, Walter (1x), Huguet, Bernard (1x), Heinoo, Risto (1x), Brodie, Hugh (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 9…Bg4 9…a6 9…Re8 9…Na6
<1800 63 43% 30% 17% 5%
1800-2200 573 38% 37% 15% 9%
2200-2600 213 53% 29% 7% 9%
2600+ 1 100%
Évolution par décennie (% des parties)
Décennie N parties 9…Bg4 9…a6 9…Re8 9…Na6
1920s 1 100%
1950s 23 26% 30% 26% 13%
1960s 29 38% 31% 10% 17%
1970s 29 31% 21% 14% 28%
1980s 48 50% 40% 10%
1990s 173 32% 38% 17% 9%
2000s 391 39% 32% 15% 10%
2010s 374 42% 37% 13% 6%
2020s 79 57% 20% 14% 8%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
9…Bg4 42% 57% ▲ +15.0%
9…a6 37% 20% ▼ -16.6%
9…Re8 13% 14% ▲ +1.4%
9…Na6 6% 8% ▲ +1.7%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 1 partie
Smyslov, Vladimir — 1 partie
Parties historiques
9…Bg4 — 39.9% (458 parties)
1955 — Goldberg, Grigory A vs Sherbakov, Vitaly — 0-1 — Moscow RUS
1959 — Jauregui, Carlos vs Sanguineti, Raúl Carlos — 1/2-1/2 — Santiago CHI
1959 — Laustsen, Albert vs Jezek, Jaroslav — 1/2-1/2 — cr.
1959 — Pinzon Solis, Felipe vs Sanguineti, Raúl Carlos — 0-1 — Lima PER
1959 — Korning, Peter vs Andersen, Borge — 0-1 — Aarhus DEN
9…a6 — 33.7% (387 parties)
1923 — Teller, Alfred vs Konig, Emmerich — 1/2-1/2 — Brno-Vienna
1951 — Bondarevsky, Igor vs Aratovsky, Nikolay — 1-0 — URS-ch sf Leningrad RUS
1957 — Letelier Martner, Rene vs Gentil Junior, Luiz — 1/2-1/2 — Rio de Janeiro BRA
1957 — Ravn, Palle vs Spassky, Boris V. — 0-1 — Reykjavik ISL
1957 — Poliak, Abram vs Vasiukov, Evgeni — 0-1 — Moscow RUS
9…Re8 — 14.3% (164 parties)
1953 — Goldberg, Grigory A vs Veltmander, Iogannes — 1-0 — Leningrad RUS
1956 — Aceituno Cantero, Jose Tomas vs De Souza Mendes, Joao — 1-0 — Montevideo URU
1957 — Parr, Frank vs Newman Caceres, Reynaldo Adolfo — 1-0 — Plymouth
1957 — Vistaneckis, Isakas vs Petrosian, Tigran V. — 1/2-1/2 — Minsk BLR
1957 — Valchanov, Mihail vs Bogdanov, Emil — 1-0 — Sofia BUL
9…Na6 — 8.5% (97 parties)
1953 — Birbrager, Isaak vs Tal, Mikhail — 0-1 — Kharkov UKR
1954 — Kampenuss Peteris vs Polugaevsky, Lev — 0-1 — Riga LAT
1957 — Vark, Kalju vs Suetin, Alexey S — 0-1 — Minsk BLR
1961 — Albano Martinez, Fabio vs Rivera, Daniel — 0-1 — Rio Piedras
1963 — Brock, Walter vs Huguet, Bernard — 1/2-1/2 — Paris FRA