B98b - 8.Qf3 - Najdorf (1955)

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B98b — Najdorf (1955)
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Be7 8.Qf3
Les coups candidats
Ambassadeurs : Clement, Guy (39x), ? (39x), Browne, Walter Shawn (38x), De Firmian, Nick (32x), Adamski, Robert (30x), Maeder, Karl-Heinz (26x), Donner, Jan-Hein (20x), Abreu, Marcio Marques (19x)
Ambassadeurs : Spasov, Spas (27x), Kover, Warner Bruce Prof Dr (24x), Browne, Walter Shawn (20x), Bednarski, Jacek (19x), Blackstone, John (19x), ? (16x), Kavalek, Lubomir (8x), Matulovic, Milan (8x)
8…Nbd7 — 7.3% (1448 parties)
Ambassadeurs : Browne, Walter Shawn (10x), Janisch, Manfred (4x), Angles d'Auriac, Bernard (3x), Fischer, Robert J (3x), Thorhallsson, Throstur (3x), Perenyi, Bela (3x), Jachnowitsch, Kristjan John (3x), Lee, Marvin (3x)
Ambassadeurs : Clares Huanca, Danner Saed (11x), Chabradze, Boris (10x), Carlson, Curtis (9x), De Ruiter, Tom (8x), Anthonius, Brayden Ryan (5x), Gerry, Mccartney (5x), Van Mechelen, Jan (5x), Adams, Mark (5x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 8…Qc7 8…h6 8…Nbd7 8…Qa5
<1800 1392 65% 9% 11% 1%
1800-2200 8707 73% 10% 9% 2%
2200-2600 5025 76% 14% 5% 3%
2600+ 67 76% 16% 3% 3%
Évolution par décennie (% des parties)
Décennie N parties 8…Qc7 8…h6 8…Nbd7 8…Qa5
1950s 130 64% 21% 7% —
1960s 578 63% 27% 5% —
1970s 1268 79% 15% 3% 1%
1980s 1447 83% 9% 4% 1%
1990s 3552 78% 6% 6% 5%
2000s 5736 74% 9% 7% 2%
2010s 5404 69% 13% 10% 1%
2020s 1728 77% 10% 9% 0%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
8…Qc7 69% 77% ▲ +8.6%
8…h6 13% 10% ▼ -3.4%
8…Nbd7 10% 9% ▼ -1.5%
8…Qa5 1% 0% -0.4%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 10 parties
Ju, Wenjun — 6 parties
Anand, Viswanathan — 5 parties
Carlsen, Magnus — 1 partie
Hou, Yifan — 1 partie
Parties historiques
8…Qc7 — 74.2% (14733 parties)
1955 — Ravn, Palle vs Scherbakoff, Georges — 1-0 — Paris FRA
1955 — Shagalovich, Abo vs Chukaev, Egor — 1-0 — URS-ch sf Vilnius LTU
1955 — Szollosi, Laszlo vs Borloy, Karoly — 1-0 — ?
1955 — Nikitin, Aleksander S vs Szapiro, Grzegorz — 1/2-1/2 — Lodz POL
1955 — Franz Zabbai vs Gatto, Claudio — 1/2-1/2 — EU/M/481
8…h6 — 10.7% (2132 parties)
1955 — Olafsson, Fridrik vs Pilnik, Herman — 1-0 — Reykjavik ISL
1955 — Spassky, Boris V. vs Pilnik, Herman — 1-0 — Goteborg izt
1955 — Keres, Paul Petrovich vs Miguel, Nahuel — 1-0 — Goteborg SWE
1955 — Geller, Efim P. vs Panno, Oscar — 1-0 — Goteborg izt
1956 — Endzelins, Lucius vs Bhaskar Jyoti Koch — 1-0 — corr Wch2
8…Nbd7 — 7.3% (1448 parties)
1956 — kalatozishvili, Giorgi vs Blagidze, Alexander — 1-0 — Georgia ch
1957 — Bernstein, Sidney vs Fischer, Robert J — 0-1 — New York, NY USA
1958 — Bouna, Safwan younes vs Ojanen, Kaarle S — 0-1 — Munich GER
1958 — Cuellar, Alfredo vs Humerez Estrada, Cidar — 0-1 — Bogota COL
1959 — Estrin, Yakov vs Chistiakov, Alexander — 0-1 — Moscow RUS
8…Qa5 — 1.9% (373 parties)
1971 — Potter, Brian vs Krzyzowski, Ernest — 1-0 — Vancouver
1974 — Rosino, Antonio vs Walther, Edgar — 0-1 — Lugano SUI
1976 — Thomason, Alan vs Carlson, Curtis — 1/2-1/2 — cr.
1978 — Gieselman vs Carlson, Curtis — 0-1 — cr.
1979 — Heaven, Pete vs Byrne, Stewart — 1-0 — Belfort FRA