B89a - 7…* - Sozin (1958)

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B89a — Sozin (1958)
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Bc4 Nc6 7.Be3
Les coups candidats
Ambassadeurs : Paoli, Enrico (20x), ? (19x), Schneider, Lars-Ake (17x), Spassov, Liuben (16x), Wedberg, Tom (16x), Muir, Andrew J (16x), De Firmian, Nick (13x), Cebalo, Miso (13x)
Ambassadeurs : Madl, Ildiko (39x), Lerner, Konstantin Z (20x), Velimirovic, Dragoljub (19x), ? (16x), Inkiov, Ventzislav (16x), Sher, Miron (15x), Lupulescu, Constantin (15x), Gupta, Abhijeet (14x)
7…Bd7 — 2.6% (254 parties)
Ambassadeurs : Reeh, Oliver (5x), Delgado Ramirez, Neuris (4x), Kucuksari, Kaan (4x), Draghici Flutur, Gavril (4x), Ivanov, Igor V. (3x), Amar, Elham (3x), Warmerdam, Max (3x), Borik, Otto (2x)
7…Qc7 — 1.1% (106 parties)
Ambassadeurs : Ungureanu, Emil (7x), Mantovani, Renzo (6x), Mititelu, Gheorghe (4x), Bernard, Christophe (4x), Di Paolo, Raffaele (3x), Shirazi, Kamran (2x), Woller, Rainer (2x), Velimirovic, Dragoljub (2x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 7…Be7 7…a6 7…Bd7 7…Qc7
<1800 273 70% 25% 1% 1%
1800-2200 2569 64% 32% 3% 1%
2200-2600 5048 53% 42% 3% 1%
2600+ 80 59% 34% 8% —
Évolution par décennie (% des parties)
Décennie N parties 7…Be7 7…a6 7…Bd7 7…Qc7
1950s 24 71% 21% 4% —
1960s 371 77% 16% 2% 2%
1970s 839 72% 23% 2% 3%
1980s 1152 60% 36% 2% 2%
1990s 2482 61% 36% 1% 1%
2000s 2526 57% 40% 1% 1%
2010s 1637 60% 36% 2% 1%
2020s 581 38% 43% 18% 0%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
7…Be7 60% 38% ▼ -22.7%
7…a6 36% 43% ▲ +7.0%
7…Bd7 2% 18% ▲ +16.2%
7…Qc7 1% 0% ▼ -0.6%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 10 parties
Kasparov, Garry — 6 parties
Anand, Viswanathan — 6 parties
Hou, Yifan — 3 parties
Ju, Wenjun — 2 parties
Kramnik, Vladimir — 1 partie
Ding, Liren — 1 partie
Gukesh D — 1 partie
Parties historiques
7…Be7 — 59.8% (5744 parties)
1950 — Estrin, Yakov vs Aronin, Lev — 1/2-1/2 — USSR ch sf
1950 — Rossolimo, Nicolas vs Acoltzi Ruiz, Mariana — 1/2-1/2 — Mar del Plata ARG
1952 — Woronzoff, Larry vs Gligoric, Svetozar — 0-1 — Hollywood, CA
1953 — Sefc, Jan vs Jezek, Jaroslav — 1-0 — Prague CZE
1953 — Vesely, Jiri vs Sajtar, Jaroslav — 1/2-1/2 — Prague CZE
7…a6 — 35.6% (3423 parties)
1955 — Cross, Robert Gary vs Evans, Larry — 0-1 — ?
1955 — McLellan, Richard Alan vs Colby, Kenneth Mark — 1-0 — Long Beach, CA USA
1955 — Cross, Robert Gary vs Kovacs, Zoltan — 1-0 — ?
1959 — Fabian, Jaroslav vs Rejfir, Josef — 1/2-1/2 — Cerveny Kostelec
1959 — Tesar, Karol vs Rejfir, Josef — 0-1 — Trebic
7…Bd7 — 2.6% (254 parties)
1958 — Tracy, Tom vs CHUKS, Smith Daniel — 0-1 — Pittsburg, CA
1963 — Sloan, Sam vs Martz, William — 0-1 — US Junior ch;State College,PA
1966 — Barungi Kemuel John vs Patty, Jack — 1-0 — Toronto CAN
1966 — Dantes La Primavera vs Ranjith Kumar Molli — 1-0 — cr.
1967 — Morgado, Juan Sebastian vs Senabre, Juan Vicente — 1-0 — Buenos Aires ARG
7…Qc7 — 1.1% (106 parties)
1960 — Nacht, Edgar vs Bondoc, Dan-Vladimir — 0-1 — Bucharest ROU
1965 — Lein, Anatoly vs Van Wijngaarden, Frank — 1/2-1/2 — Hamburg etc
1969 — Neukirch, Detlef vs Kuettner, Uwe — 1-0 — Schwerin GER
1969 — Adorjan, Alex vs Ribli, Zoltan — 1-0 — HUN
1969 — Petkevici vs Gurgenidze, Aleksandra — 0-1 — Moscow RUS