B87a - 8.* - Sozin-Najdorf (1958)

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B87a — Sozin-Najdorf (1958)
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Bc4 a6 7.Bb3 b5
Les coups candidats
Ambassadeurs : Conterno, Dominique (37x), Browne, Walter Shawn (25x), Marjanovic, Slavoljub (15x), De Firmian, Nick (14x), Krueger, Hilmar (14x), Canizares Cuadra, Pedro (12x), Zapata, Alonso (12x), Honfi, Karoly (11x)
8.Bg5 — 14.3% (1388 parties)
Ambassadeurs : Timmerman, Gert (21x), Meszaros, Andras (11x), Bakhmatov, Eduard (9x), Mueller, Karsten, Dr. (7x), Naumann, Alexander (7x), Tukhaev, Adam (7x), Jurkovic, Ante (6x), Karjakin, Sergey (6x)
8.a3 — 6.5% (626 parties)
Ambassadeurs : Farago, Sandor (28x), Bak, Jerzy (6x), Suta, Andraz (5x), Velasquez Cristancho, Juan Pablo (3x), Masic, Ljubomir (2x), Parma, Bruno (2x), Tatai, Stefano (2x), Barczay, Laszlo (2x)
8.f4 — 5.7% (553 parties)
Ambassadeurs : Eberth, Zoltan Bela (9x), ? (6x), Kreiman, Boris (6x), Polugaevsky, Lev (5x), Byrne, Robert E (4x), Susnik, Matej (4x), Dely, Peter (3x), Zuckerman, Bernard (3x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 8.O-O 8.Bg5 8.a3 8.f4
<1800 426 54% 13% 12% 4%
1800-2200 3529 55% 15% 8% 5%
2200-2600 4000 59% 18% 4% 5%
2600+ 75 72% 19% 3% —
Évolution par décennie (% des parties)
Décennie N parties 8.O-O 8.Bg5 8.a3 8.f4
1950s 10 30% — 30% 10%
1960s 168 39% 4% 13% 27%
1970s 590 63% 3% 5% 11%
1980s 812 72% 7% 4% 6%
1990s 2199 68% 6% 6% 8%
2000s 3344 54% 21% 6% 4%
2010s 2080 55% 18% 7% 4%
2020s 479 44% 21% 10% 4%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
8.O-O 55% 44% ▼ -11.3%
8.Bg5 18% 21% ▲ +3.7%
8.a3 7% 10% ▲ +2.6%
8.f4 4% 4% ▲ +0.6%
Joueurs célèbres
Champions du monde dans cette position
Kasparov, Garry — 10 parties
Tal, Mikhail — 6 parties
Anand, Viswanathan — 3 parties
Ju, Wenjun — 3 parties
Carlsen, Magnus — 1 partie
Hou, Yifan — 1 partie
Parties historiques
8.O-O — 58.6% (5671 parties)
1959 — Honfi, Karoly vs Szabo, Laszlo — 1/2-1/2 — Budapest HUN
1959 — Kotkov, Yuri M vs Polugaevsky, Lev — 0-1 — Voronezh RUS
1959 — Geller, Efim P. vs Werchan, Hans, Dr. — 0-1 — Halle/Saale
1960 — Ciocaltea, Victor vs Szabo, Laszlo — 0-1 — Bucharest ROU
1960 — Fischer, Robert J vs Gadia, Okicio — 1-0 — Mar del Plata ARG
8.Bg5 — 14.3% (1388 parties)
1961 — Vasiukov, Evgeni vs Gligoric, Svetozar — 1/2-1/2 — Belgrade SRB
1964 — Ruderfer, Mark B vs Babadzhanov, Vladimir — 0-1 — ?
1967 — Miliauskas, Arnoldas vs Coudari, Camille — 0-1 — Rochester, NY USA
1968 — Vadasz, Laszlo vs Kluger, Gyula — 1-0 — HUN
1968 — Radulov, Ivan vs Ghitescu, Theodor — 1/2-1/2 — Reggio Emilia ITA
8.a3 — 6.5% (626 parties)
1953 — Atze, Burkhard vs Herrmann, Ludwig — 0-1 — Jena GER
1958 — Nievergelt, Erwin vs Evans, Larry — 0-1 — Munich GER
1959 — Pogats, Jozsef Jr. vs Bak, Istvan — 0-1 — HUN-ch Budapest HUN
1960 — Alvarez, Jose-Luis vs Spassky, Boris V. — 0-1 — ?
1960 — Silveri, Eliot vs Petrosian, Tigran A. — 0-1 — Tunisia
8.f4 — 5.7% (553 parties)
1959 — Fischer, Robert J vs Tal, Mikhail — 0-1 — Belgrade/Bled/Zagreb YUG
1961 — ? vs Bertok, Mario Jr. — 1/2-1/2 — Zagreb CRO
1962 — Dely, Peter vs Szabo, Laszlo — 1-0 — Budapest HUN
1963 — Rubinic, Ognjen vs Nicevski, Risto — 1/2-1/2 — Dravograd
1963 — Kinnmark, Ove vs Ivkov, Borislav — 1/2-1/2 — Halle zt