B57a - 6…g6 7.Nxc6 bxc6 8.e5 - Sozin, Magnus Smith Trap (1900)

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B57a — Sozin, Magnus Smith Trap (1900)
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bc4 g6 7.Nxc6 bxc6 8.e5
Les coups candidats
8…Ng4 — 45.8% (258 parties)
Ambassadeurs : Korchnoi, Viktor (2x), Frey, Carlos (2x), Moody, David W (2x), Jirovsky, Milos (2x), Iordanidou, Zoi (2x), Dantas, Nelson (1x), Adail Gondim, Jose (1x), Schallehn, Dieter (1x)
8…Nd7 — 26.3% (148 parties)
Ambassadeurs : Rhee, Paul (3x), Wilkerson, Max B (2x), Di Camillo, Attilio (1x), Fred, Kotsu (1x), Caplan, William (1x), Balint, Cornel (1x), Velzel, Edwin (1x), Jackson, John Alexander (1x)
8…d5 — 8.2% (46 parties)
Ambassadeurs : Serra Olives, Tomas (1x), Westerinen, Heikki M.J. (1x), Tartakower, Savielly (1x), Kara, Neman (1x), Liew, Chee-Meng Jimmy (1x), Chin, Anthony (1x), Keyur Prasanna Sole (1x), Gomez Esteban, Juan Mario (1x)
8…Nh5 — 7.8% (44 parties)
Ambassadeurs : Bak, Istvan (2x), Bachtiar, Arovah (2x), Materne D (1x), Kroker, F. (1x), Sarapu, Ortvin (1x), Cornford, Lindsay H (1x), Lemmen, Gerrit (1x), Kool, Wim (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 8…Ng4 8…Nd7 8…d5 8…Nh5
<1800 57 39% 21% 7% 23%
1800-2200 259 45% 24% 9% 6%
2200-2600 89 55% 30% 11% 1%
Évolution par décennie (% des parties)
Décennie N parties 8…Ng4 8…Nd7 8…d5 8…Nh5
1950s 11 45% 36% 9% —
1960s 28 32% 43% 4% 14%
1970s 22 41% 32% 5% 14%
1980s 32 62% 12% 9% 6%
1990s 125 43% 29% 10% 5%
2000s 161 50% 20% 7% 10%
2010s 149 44% 30% 7% 8%
2020s 35 43% 20% 17% 3%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
8…Ng4 44% 43% ▼ -0.8%
8…Nd7 30% 20% ▼ -10.2%
8…d5 7% 17% ▲ +10.4%
8…Nh5 8% 3% ▼ -5.2%
Parties historiques
8…Ng4 — 45.8% (258 parties)
1950 — Blatny, Frantisek vs Dasek — 1-0 — Chocen
1954 — Dantas, Nelson vs Adail Gondim, Jose — 1/2-1/2 — Sao Paulo BRA
1955 — Boleslavsky, Isaac vs Korchnoi, Viktor — 1-0 — URS-ch sf Riga LAT
1956 — Byvshev, Vasily vs Polugaevsky, Lev — 1/2-1/2 — Leningrad ch-URS
1959 — Zurakhov, Vladlen Y vs Korchnoi, Viktor — 1/2-1/2 — Chelyabinsk RUS
8…Nd7 — 26.3% (148 parties)
1951 — Jackson, John Alexander vs Bhend, Edwin — 1/2-1/2 — Birmingham/Coventry
1956 — Di Camillo, Attilio vs Fred, Kotsu — 1-0 — Oklahoma City, OK USA
1957 — Blatny, Frantisek vs Mikula, Ladislav — 1-0 — Prague CZE
1958 — Pelikán, Jiří vs Dominguez, Cristobal — 1-0 — Buenos Aires ARG
1962 — Kincel, Artur vs O Hara, Matthew D — 1/2-1/2 — ?
8…d5 — 8.2% (46 parties)
1950 — Tartakower, Savielly vs Kara, Neman — 1/2-1/2 — Southsea ENG
1962 — Serra Olives, Tomas vs Westerinen, Heikki M.J. — 1-0 — Varna BUL
1979 — Liew, Chee-Meng Jimmy vs Chin, Anthony — 1-0 — Singapore SIN
1984 — Keyur Prasanna Sole vs Gomez Esteban, Juan Mario — 1-0 — cr.
1986 — Barczay, Laszlo vs Perenyi, Bela — 1-0 — Kecskemet HUN
8…Nh5 — 7.8% (44 parties)
1966 — Bak, Istvan vs Bachtiar, Arovah — 1-0 — It I Beverwijk NED
1966 — Bak, Istvan vs Bachtiar, Arovah — 1-0 — Beverwijk NED
1967 — Sarapu, Ortvin vs Cornford, Lindsay H — 1-0 — N.Z ch C
1968 — Materne D vs Kroker, F. — 1-0 — corr FRG-PK
1972 — Gimenez, G Gustavo vs Llerena, Renaldo — 1-0 — ?