B93c - 6…Nbd7 - Najdorf (1957)

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B93c —
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.f4 Nbd7
Eval: [+0.36]
Les coups candidats
Ambassadeurs : ? (7x), Polgar, Judit (5x), Gelfand, Boris (5x), Beliavsky, Alexander G (4x), Van der Wiel, John T.H. (4x), Kindermann, Stefan (4x), Maeder, Karl-Heinz (3x), Pliester, Leon (3x)
7.a4 — 20.2% (205 parties)
Ambassadeurs : Gelfand, Boris (6x), Kuczynski, Robert (4x), Ghizdavu, Dumitru (3x), Jaracz, Pawel (3x), Kerek, Krisztian (3x), Warakomski, Tomasz (3x), Friedel, Joshua (3x), Moranda, Wojciech (3x)
7.Nf3 — 20.1% (204 parties)
Ambassadeurs : Sax, Gyula (5x), Agrest, Evgenij (5x), Sigurjonsson, Gudmundur (4x), Polgar, Judit (4x), Sherzer, Alex (4x), Ulybin, Mikhail (4x), Dvoirys, Semen I. (4x), Schneider, Lars-Ake (4x)
7.Bd3 — 17.3% (176 parties)
Ambassadeurs : ? (6x), Boll, Peter (4x), Pavlov, Mircea-Sergiu-Aurelian (3x), Sigurjonsson, Gudmundur (3x), Rogoff, Kenneth (3x), Barglowski, Filip (3x), Nunn, John D M (3x), Paoli, Enrico (2x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 7.Be2 7.a4 7.Nf3 7.Bd3
<1800 10 30% 10% 30% —
1800-2200 172 28% 17% 15% 18%
2200-2600 593 25% 25% 25% 15%
2600+ 27 63% 11% 7% 11%
Évolution par décennie (% des parties)
Décennie N parties 7.Be2 7.a4 7.Nf3 7.Bd3
1950s 13 62% — 8% 15%
1960s 21 14% — 10% 57%
1970s 109 18% 16% 21% 39%
1980s 155 26% 27% 23% 15%
1990s 303 34% 22% 22% 12%
2000s 219 33% 19% 19% 13%
2010s 173 24% 20% 20% 14%
2020s 24 17% 21% 8% 25%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
7.Be2 24% 17% ▼ -7.0%
7.a4 20% 21% ▲ +1.2%
7.Nf3 20% 8% ▼ -11.3%
7.Bd3 14% 25% ▲ +11.1%
Joueurs célèbres
Champions du monde dans cette position
Anand, Viswanathan — 4 parties
Tal, Mikhail — 3 parties
Kasparov, Garry — 2 parties
Karpov, Anatoly — 1 partie
Karpov, Aleksandr — 1 partie
Parties historiques
7.Be2 — 28.6% (291 parties)
1950 — Nezhmetdinov, Rashid vs Soloviev, Vladimir A — 1/2-1/2 — URS-ch sf Gorky
1951 — Barthe Paoli, Louis vs Lob, Chris — 1-0 — Venice ITA
1951 — Pogats, Jozsef Jr. vs Reicher, Emanoil-George — 1/2-1/2 — Bucharest ROU
1951 — Niephaus, Walter vs Heinicke, Herbert — 1-0 — Augsburg GER
1952 — Nikitin, Aleksander S vs Nei, Iivo — 1-0 — Riga LAT
7.a4 — 20.2% (205 parties)
1971 — Paoli, Enrico vs Ghitescu, Theodor — 1/2-1/2 — Zagreb CRO
1971 — Durao, Joaquim vs Rogoff, Kenneth — 0-1 — Malaga ESP
1972 — Balaskas, Panayotis vs Magnusson, Olafur — 1-0 — Skopje MKD
1972 — Mariotti, Sergio vs Tatai, Stefano — 0-1 — Viareggio ITA
1973 — Ghizdavu, Dumitru vs Georgescu, Vasile-Maxim — 1-0 — Bucharest ROU
7.Nf3 — 20.1% (204 parties)
1958 — Filipowicz, Andrzej vs Duraku, Emin — 1/2-1/2 — Varna BUL
1961 — Wade, Robert G vs Stahlberg, Gideon — 0-1 — Zevenaar
1969 — Stanciu, Traian vs Szabo, Iuliu inactive — 1/2-1/2 — Bucharest ROU
1971 — Ghinda, Mihail-Viorel vs Ribli, Zoltan — 0-1 — Bucharest ROU
1971 — Wach, Slawomir vs Dieks, Roy G — 1/2-1/2 — Athens GRE
7.Bd3 — 17.3% (176 parties)
1953 — Donner, Jan-Hein vs De Paoli, Emilio — 1-0 — Mont Pelerin sur Vevey
1955 — Limbos, Paul vs Paoli, Enrico — 1/2-1/2 — Mont Pelerin sur Vevey
1963 — Young, DH. vs Price, AR. — 0-1 — Bath ENG
1966 — ? vs Pavlov, Mircea-Sergiu-Aurelian — 1-0 — Bucharest Bucharest ROM
1966 — ? vs Pavlov, Mircea-Sergiu-Aurelian — 1-0 — Bucharest ROU