B87a - 7…b5 - Sozin-Najdorf

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B87a — Sozin-Najdorf
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Bc4 a6 7.Bb3 b5
Eval: [+0.03]
Les coups candidats
Ambassadeurs : Conterno, Dominique (37x), Browne, Walter Shawn (23x), Gelfand, Boris (18x), Garcia, Hamlet Danilo (17x), Marjanovic, Slavoljub (15x), De Firmian, Nick (14x), Krueger, Hilmar (14x), Tomczak, Jacek (14x)
8.Bg5 — 14.3% (1370 parties)
Ambassadeurs : Timmerman, Gert (22x), Meszaros, Andras (12x), Van Leeuwen, Etienne (8x), Bakhmatov, Eduard (8x), Mueller, Karsten, Dr. (7x), Naumann, Alexander (7x), Tukhaev, Adam (7x), Jurkovic, Ante (6x)
8.a3 — 6.4% (612 parties)
Ambassadeurs : Farago, Sandor (28x), Polanski, Jerzy (6x), Suta, Andraz (5x), Komora, Andrej (3x), Haletzki, Bernd (3x), Sanchez Ruiz, Piedad Esmeralda (3x), Eg, Karlheinz (3x), Velasquez Cristancho, Juan Pablo (3x)
8.f4 — 5.7% (550 parties)
Ambassadeurs : Eberth, Zoltan Bela (9x), ? (6x), Kreiman, Boris (6x), Burkett, Max (5x), Polugaevsky, Lev (4x), Platonov, Igor V (4x), Voigt, Martin (4x), Markun, Bostjan (4x)
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 193 52% 14% 11% 5%
1800-2200 2903 54% 15% 9% 5%
2200-2600 4174 61% 18% 3% 5%
2600+ 91 67% 23% 1% —
Évolution par décennie (% des parties)
Décennie N parties 8.O-O 8.Bg5 8.a3 8.f4
1950s 10 30% — 30% 10%
1960s 167 39% 4% 13% 26%
1970s 588 63% 3% 5% 11%
1980s 807 72% 6% 4% 6%
1990s 2190 68% 6% 6% 8%
2000s 3336 54% 21% 6% 4%
2010s 2069 55% 18% 7% 4%
2020s 399 46% 21% 9% 5%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
8.O-O 55% 46% ▼ -9.1%
8.Bg5 18% 21% ▲ +3.7%
8.a3 7% 9% ▲ +2.2%
8.f4 4% 5% ▲ +0.9%
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 — 58.8% (5624 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% (1370 parties)
1961 — Vasiukov, Evgeni vs Gligoric, Svetozar — 1/2-1/2 — Belgrade op Belgrade YUG
1964 — Ruderfer, Mark B vs Babadzhanov, Vladimir — 0-1 — ?
1967 — Miliauskas, Arnoldas vs Coudari, Camille — 0-1 — Rochester, NY USA
1968 — Radulov, Ivan vs Ghitescu, Theodor — 1/2-1/2 — Reggio Emilia ITA
1968 — Anderson, Barton vs Blackstone, John — 0-1 — No. CA
8.a3 — 6.4% (612 parties)
1953 — Burkhardt, Erich vs Herrmann, Ludwig — 0-1 — Jena GER
1958 — Nievergelt, Erwin vs Evans, Larry — 0-1 — Munich GER
1959 — Pogats, Jozsef Jr. vs Bilek, Istvan — 0-1 — HUN-ch Budapest HUN
1960 — Alvarez del Monte, Jose vs Spassky, Boris V. — 0-1 — Mar del Plata ARG
1960 — Silveri, Eliot vs Petrosian, Tigran A. — 0-1 — Tunisia
8.f4 — 5.7% (550 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, Ladislav — 1-0 — Budapest HUN
1963 — Rubinic vs Nicevski, Risto — 1/2-1/2 — Dravograd
1963 — Kinnmark, Ove vs Ivkov, Borislav — 1/2-1/2 — Halle GER