B92b - 6…Nbd7 - Najdorf (1946)

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B92b — Najdorf (1946)
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2 Nbd7
Les coups candidats
7.O-O — 42.3% (445 parties)
Ambassadeurs : Balazec, Ludovit (6x), ? (5x), Bodnaruk, Anastasia (5x), Gordievsky, Dmitry (4x), Silva, Henrique Brasil Barrientos (4x), Polugaevsky, Lev (3x), Tringov, Georgi P (3x), Nunn, John D M (3x)
7.Be3 — 25.7% (270 parties)
Ambassadeurs : Quinteros, Miguel A. (9x), Almarza Mato, Carlos (4x), Ljubojevic, Ljubomir (3x), Morovic Fernandez, Ivan (3x), Alsayed, Mohammed (3x), Chestnov, Vitaliy A. (2x), Matanovic, Aleksandar (2x), Liberzon, Vladimir M (2x)
Ambassadeurs : Klovans, Janis (4x), Polugaevsky, Lev (4x), Bogdanovic, Rajko (4x), Nunn, John D M (4x), Quinteros, Miguel A. (4x), Tringov, Georgi P (4x), Bykhovsky, Anatoly A (3x), Liberzon, Vladimir M (3x)
7.a4 — 4.9% (52 parties)
Ambassadeurs : Ruck, Robert (2x), Seslija, Dragan (1x), Ligterink, Gert (1x), Bykhovsky, Anatoly A (1x), Simagin, Vladimir (1x), Huguet, Bernard (1x), Tatai, Stefano (1x), Hardicsay, Peter (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 7.O-O 7.Be3 7.f4 7.a4
<1800 51 35% 37% 8% 6%
1800-2200 316 45% 30% 16% 3%
2200-2600 457 42% 23% 23% 6%
2600+ 18 39% 17% 28% 11%
Évolution par décennie (% des parties)
Décennie N parties 7.O-O 7.Be3 7.f4 7.a4
1950s 2 50% — 50% —
1960s 51 35% 10% 39% 4%
1970s 104 25% 29% 37% 6%
1980s 60 47% 15% 25% 7%
1990s 148 26% 32% 24% 6%
2000s 241 50% 20% 18% 5%
2010s 403 49% 28% 12% 4%
2020s 42 33% 38% 14% 7%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
7.O-O 49% 33% ▼ -16.0%
7.Be3 28% 38% ▲ +9.8%
7.f4 12% 14% ▲ +2.4%
7.a4 4% 7% ▲ +2.9%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 3 parties
Karpov, Anatoly — 3 parties
Anand, Viswanathan — 2 parties
Gukesh D — 1 partie
Parties historiques
7.O-O — 42.3% (445 parties)
1957 — Marciniak, Alexandre vs Matkowski, Wiktor — 0-1 — Poland
1960 — Elemberg, Norberto vs Casteran, E. — 1-0 — ?
1963 — Zhukhovitsky, Samuel vs Polugaevsky, Lev — 1-0 — Soviet Union
1964 — B Milton vs Simagin, Konstantin — 0-1 — corr USSR
1965 — Lehmann, Heinz vs Fischer, Robert J — 0-1 — Havana CUB
7.Be3 — 25.7% (270 parties)
1962 — Matanovic, Aleksandar vs Stein Septiano Malewa Kleden — 1-0 — Lvov UKR
1963 — Lein, Anatoly vs Balitinov, Magomed Amaevich — 0-1 — Russia
1968 — Chestnov, Vitaliy A. vs Polugaevsky, Lev — 1/2-1/2 — Ch URS, Alma-Ata
1968 — Chestnov, Vitaliy A. vs Liberzon, Vladimir M — 1-0 — Ch URS, Alma-Ata
1969 — Bykhovsky, Anatoly A vs Yudovich, Mikhail Jr — 1-0 — Olympiad Moscow (trade unions
7.f4 — 19.7% (207 parties)
1959 — Gyving, Robert vs OBrien, Erik Michael — 0-1 — Santa Rosa Chess Club
1963 — Bykhovsky, Anatoly A vs Lepeshkin, Vladimir — 1-0 — Moscow RUS
1964 — Siveri, Armando vs Bak, Istvan — 0-1 — Reggio Emilia ITA
1964 — Holzmann, Licurgo vs Mello, Jose Benicio — 1-0 — Brasilia BRA
1964 — Klovans, Janis vs Polugaevsky, Lev — 1/2-1/2 — Moscow RUS
7.a4 — 4.9% (52 parties)
1962 — Bykhovsky, Anatoly A vs Simagin, Vladimir — 1/2-1/2 — Moscow RUS
1967 — Seslija, Dragan vs Ligterink, Gert — 1-0 — Groningen NED
1972 — Huguet, Bernard vs Tatai, Stefano — 1/2-1/2 — Las Palmas ESP
1973 — Pilnik, Herman vs Rubinetti, Jorge — 1/2-1/2 — Buenos Aires ARG
1974 — Nestler, Vincenzo vs Albano, Marco — 0-1 — Milan ITA