B86b - 6…a6 - Sozin-Najdorf (1925)

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B86b — Sozin-Najdorf (1925)
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Bc4 a6
Les coups candidats
Ambassadeurs : Conterno, Dominique (76x), Eberth, Zoltan Bela (43x), ? (37x), Velimirovic, Dragoljub (36x), Timmerman, Gert (36x), De Firmian, Nick (35x), Zapata, Alonso (31x), Istratescu, Andrei (28x)
7.O-O — 16.5% (5279 parties)
Ambassadeurs : Starace, Umberto (32x), Sychov, Aleksandr Vitalievi (29x), Kravtsiv, Martyn (19x), Ardeleanu, Alin (17x), Langat Samuel (16x), Mueller, Karsten, Dr. (14x), Emms, John M (14x), Lanz Calavia, José María (14x)
7.Be3 — 5.0% (1591 parties)
Ambassadeurs : Warzecha, Helmut (15x), Narva, Mai (14x), Abraham, Jan Willem (9x), Forster, Richard (8x), Lind, Jan-Olov (7x), Mousavi, Se (7x), Zhurova, Anna (7x), Panerai, Ksenia (6x)
7.a3 — 2.9% (932 parties)
Ambassadeurs : Stangl, Anita, Dr. (19x), Saltaev, Mihail (16x), Ciric, Dragoljub M (11x), Kabisch, Thilo (11x), Robatsch, Karl (7x), Jackova, Jana (7x), Liepold, Stefan (6x), Kochukova, Anna (6x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 7.Bb3 7.O-O 7.Be3 7.a3
<1800 2158 51% 22% 8% 2%
1800-2200 13018 68% 16% 5% 2%
2200-2600 11104 74% 14% 4% 3%
2600+ 247 65% 18% 9% 3%
Évolution par décennie (% des parties)
Décennie N parties 7.Bb3 7.O-O 7.Be3 7.a3
1950s 178 29% 54% 1% 13%
1960s 682 63% 14% 2% 16%
1970s 1102 79% 9% 3% 4%
1980s 1500 77% 8% 4% 3%
1990s 6615 73% 13% 4% 3%
2000s 10755 70% 16% 4% 2%
2010s 9030 63% 22% 4% 2%
2020s 2200 51% 16% 17% 4%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
7.Bb3 63% 51% ▼ -12.9%
7.O-O 22% 16% ▼ -5.9%
7.Be3 4% 17% ▲ +12.3%
7.a3 2% 4% ▲ +1.7%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 10 parties
Kasparov, Garry — 10 parties
Anand, Viswanathan — 10 parties
Ju, Wenjun — 5 parties
Kramnik, Vladimir — 4 parties
Carlsen, Magnus — 3 parties
Hou, Yifan — 2 parties
Smyslov, Vladimir — 1 partie
Gukesh D — 1 partie
Parties historiques
7.Bb3 — 67.6% (21669 parties)
1952 — Abdi, Andreas vs Vukovic, Sava — 1/2-1/2 — Belgrade SRB
1952 — Costa, Stephane Jose vs Garcia Vera, Romeo — 1-0 — Rosario ARG
1953 — Atze, Burkhard vs Herrmann, Ludwig — 0-1 — Jena GER
1953 — Ciocaltea, Victor vs O'Kelly, Albéric de Galway — 1-0 — Bucharest ROU
1954 — Kasparian, Genrikh vs Kotov, Alexander — 0-1 — Erevan ARM
7.O-O — 16.5% (5279 parties)
1950 — Molnar, Francois vs Baratz, Abraham — 1-0 — Paris FRA
1950 — Lipnitsky, Isaac vs Aronin, Lev — 1-0 — Moskou ch-URS
1951 — Kopylov, Nazar vs Aronin, Lev — 0-1 — Moskou ch-URS
1952 — Pogats, Jozsef Jr. vs Johansson, Ingi Randver — 1-0 — Helsinki olm
1952 — Barden, Leonard vs Kottnauer, Cenek — 0-1 — Helsinki olm
7.Be3 — 5.0% (1591 parties)
1959 — Rubtsova, Olga vs Keller-Hermann, Edith — 0-1 — Plovdiv BUL
1961 — Collins, Richard vs Ledgerwood, Edward — 1-0 — Hayes
1961 — Pelikan, Jorge vs Moyano, Marco — 1/2-1/2 — Balcarce
1964 — Fischer, Robert J vs Sillars, K. — 1-0 — Chicago simultaan
1964 — Fischer, Robert J vs De Almeida, Silas Perdigao Cota — 1-0 — Chicago, IL USA
7.a3 — 2.9% (932 parties)
1951 — Otto, Arnold vs Zirngibl, Albert — 1/2-1/2 — Schwerin GER
1952 — Abdi, Andreas vs Djurasevic, Bozidar — 1/2-1/2 — Belgrade SRB
1954 — Bronstein, David I vs Miguel, Nahuel — 0-1 — Buenos Aires ARG
1954 — Bronstein, David I vs Miguel, Nahuel — 0-1 — Buenos Aires tt
1954 — Wade, Robert G vs Rabar, Braslav — 0-1 — Munich GER