B89b - 7…a6 - Sozin [+0.42]

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B89b — Sozin
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Bc4 Nc6 7.Be3 a6
Eval: [+0.42]
Les coups candidats
Ambassadeurs : Madl, Ildiko (22x), Sher, Miron (13x), Hector, Jonny (13x), Inkiov, Ventzislav (12x), Lamford, Paul (11x), Kupreichik, Viktor D (11x), Nunn, John D M (10x), Wolff, Patrick G (9x)
8.Bb3 — 31.8% (1172 parties)
Ambassadeurs : Madl, Ildiko (15x), Velimirovic, Dragoljub (11x), Wittmann, Walter (10x), Videki, Sandor (9x), Lupulescu, Constantin (9x), De Firmian, Nick (9x), Lerner, Konstantin Z (7x), Aseev, Konstantin N (7x)
8.O-O — 4.0% (147 parties)
Ambassadeurs : Thipsay, Praveen M (3x), Jogi, Jakob (2x), Sandrin, Angelo (1x), Kaiser, Wolfgang (1x), Heintze, Marion (1x), Nuenchert, Eveline (1x), Liberzon, Vladimir M (1x), Portisch, Lajos (1x)
8.f3 — 2.5% (91 parties)
Ambassadeurs : Albert, Kornelia (3x), Grabics, Monika (2x), Csorba, Janos (2x), Blackstone, John (1x), Pedez, Onestes (1x), Dokladal P (1x), Zavodny, Zdenek (1x), Raposo Ignacio (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 8.Qe2 8.Bb3 8.O-O 8.f3
<1800 46 15% 22% 20% 9%
1800-2200 717 45% 31% 7% 6%
2200-2600 2219 60% 34% 2% 1%
2600+ 40 45% 45% 2% —
Évolution par décennie (% des parties)
Décennie N parties 8.Qe2 8.Bb3 8.O-O 8.f3
1940s 2 — — — —
1950s 6 — 17% 33% 17%
1960s 62 31% 55% 8% 2%
1970s 205 60% 36% 1% —
1980s 433 76% 17% 1% 1%
1990s 968 56% 34% 3% 2%
2000s 1130 53% 33% 4% 3%
2010s 672 46% 35% 7% 3%
2020s 213 57% 26% 5% 2%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
8.Qe2 46% 57% ▲ +11.7%
8.Bb3 35% 26% ▼ -9.1%
8.O-O 7% 5% ▼ -1.5%
8.f3 3% 2% ▼ -1.4%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 3 parties
Kasparov, Garry — 3 parties
Hou, Yifan — 3 parties
Kramnik, Vladimir — 2 parties
Anand, Viswanathan — 2 parties
Ju, Wenjun — 1 partie
Gukesh D — 1 partie
Ding, Liren — 1 partie
Parties historiques
8.Qe2 — 55.3% (2040 parties)
1964 — Litvinov, Vladimir vs Muehlberg, Siegfried — 1-0 — Minsk BLR
1966 — Kupreichik, Viktor D vs Liljedahl, Lennart — 1-0 — Groningen NED
1967 — Ribli, Zoltan vs Dely, Peter — 0-1 — Budapest HUN
1967 — Zatulovskaya, Tatiana vs ? — 1/2-1/2 — Subotica SRB
1967 — Palda, Karl vs Grabler — 1-0 — Austria
8.Bb3 — 31.8% (1172 parties)
1959 — Fabian, Jaroslav vs Rejfir, Josef — 1/2-1/2 — Cerveny Kostelec
1963 — Ladanyike-Karakas, Eva vs Borisenko-Belova, Valentina — 0-1 — Budapest HUN
1964 — Fischer, Raphael vs King Ruiz, Saul — 0-1 — Westerly simultaan
1964 — Fischer, Robert J vs King Stan — 0-1 — Westerly
1965 — Honfi, K. vs Jakobsen, Ole — 0-1 — Copenhagen DEN
8.O-O — 4.0% (147 parties)
1955 — McLellan, Richard Alan vs Colby, Kenneth Mark — 1-0 — Long Beach, CA USA
1955 — Cross, Robert Gary vs Kovacs, Zoltan — 1-0 — ?
1965 — Sandrin, Angelo vs Kaiser, Wolfgang — 1-0 — North Central Open
1965 — Liberzon, Vladimir M vs Portisch, Lajos — 1-0 — Erevan ARM
1966 — Jackson, Leroy vs Dahlberg, Ivars — 0-1 — Seattle, WA USA
8.f3 — 2.5% (91 parties)
1959 — Blackstone, John vs Pedez, Onestes — 0-1 — Omaha, NE
1965 — Dokladal P vs Zavodny, Zdenek — 1-0 — Brno CZE
1982 — Slavotinek, Anne vs David Glaz, Ilana — 0-1 — Lucerne SUI
1983 — Jerkovic, Boris vs Galic, Zeljko — 0-1 — Bela Crkva open
1985 — Raposo Ignacio vs Loureda Garcia, Jose Antonio — 0-1 — ?