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A70i — Classical (1951)
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
Les coups candidats
9…Bg4 — 40.2% (471 parties)
Ambassadeurs : Kusnierz, Janusz (3x), Korning, Peter (2x), Sanguineti, Raúl Carlos (2x), Schatzberg Wolfgang (2x), Gray, Garvin (2x), Coursaget, Nicolas (2x), Kelly, Ian G (2x), Goldberg, Grigory A (1x)
9…a6 — 33.2% (389 parties)
Ambassadeurs : Tal, Mikhail (2x), Filipowicz, Andrzej (2x), Kormos, Lajos (2x), Kostina, Nadezhda (2x), Goulding, Tom (1x), Brown, Benjamin (1x), Donner, Jan-Hein (1x), Henry, Paul (1x)
9…Re8 — 14.7% (172 parties)
Ambassadeurs : Beltz, Martina (2x), Lopez Martinez, Josep Manuel (2x), Gomez Luesia, Jesus C. (2x), Goldberg, Grigory (1x), Veltmander, Iogannes (1x), Parr, Frank (1x), Newman III, Robert Paul (1x), Miguel, Nahuel (1x)
9…Na6 — 8.5% (100 parties)
Ambassadeurs : Mai, Iris (2x), Brock, Walter (1x), Huguet, Bernard (1x), Heinoo, Risto (1x), Brodie, Hugh (1x), Kampenuss, Peteris (1x), Polugaevsky, Lev (1x), Martinez, Fabian Steven (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 117 37% 31% 20% 7%
1800-2200 655 37% 36% 15% 9%
2200-2600 184 54% 29% 8% 7%
2600+ 1 100%
Évolution par décennie (% des parties)
Décennie N parties 9…Bg4 9…a6 9…Re8 9…Na6
1950s 23 26% 30% 26% 13%
1960s 29 38% 31% 10% 17%
1970s 29 31% 21% 14% 28%
1980s 48 50% 40% 10%
1990s 174 32% 37% 17% 9%
2000s 391 39% 32% 15% 10%
2010s 379 42% 37% 13% 6%
2020s 100 57% 18% 16% 8%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
9…Bg4 42% 57% ▲ +15.3%
9…a6 37% 18% ▼ -18.7%
9…Re8 13% 16% ▲ +3.1%
9…Na6 6% 8% ▲ +1.9%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 3 parties
Parties historiques
9…Bg4 — 40.2% (471 parties)
1955 — Goldberg, Grigory A vs Sherbakov, Vitaly — 0-1 — Moscow RUS
1959 — Korning, Peter vs Andersen, Borge — 0-1 — Aarhus DEN
1959 — Korning, Peter vs Nielsen, Hartvig — 1-0 — Aarhus DEN
1959 — Jauregui, Carlos vs Sanguineti, Raúl Carlos — 1/2-1/2 — Santiago CHI
1959 — Laustsen, Albert vs Jezek, Jaroslav — 1/2-1/2 — ?
9…a6 — 33.2% (389 parties)
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 — Mititelu, Gheorghe vs Tal, Mikhail — 0-1 — Reykjavik ISL
1957 — Ravn, Palle vs Spassky, Boris V. — 0-1 — Reykjavik ISL
1957 — Abhinaya Polaka vs Vasiukov, Evgeni — 0-1 — Moscow RUS
9…Re8 — 14.7% (172 parties)
1953 — Goldberg, Grigory vs Veltmander, Iogannes — 1-0 — Leningrad RUS
1956 — Cantero, Carlos Ramon vs Souza Mendes, Joao — 1-0 — Montevideo URU
1957 — Parr, Frank vs Newman III, Robert Paul — 1-0 — ?
1957 — Valchanov, Mihail vs Bogdanov, Emil — 1-0 — Sofia BUL
1957 — Vistaneckis, Isakas vs Petrosian, Tigran V. — 1/2-1/2 — Minsk zt
9…Na6 — 8.5% (100 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 — Martinez, Fabian Steven vs Rivera, Daniel — 0-1 — Rio Piedras
1963 — Brock, Walter vs Huguet, Bernard — 1/2-1/2 — Paris FRA