B92d - 7.Nf3 - Najdorf (1947)

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B92d — Najdorf (1947)
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2 e5 7.Nf3
Les coups candidats
7…Be7 — 56.3% (1945 parties)
Ambassadeurs : Rodriguez Redondo, Adhara (9x), Fedorchuk, Sergey A. (8x), Shim Ng Min, Francis (8x), Firnhaber, Ingo (7x), Vachier-Lagrave, Maxime (7x), Nytra, Ondrej (7x), Svrsek Jun., Radomir (6x), Sawatzki, Frank (6x)
7…h6 — 31.7% (1096 parties)
Ambassadeurs : Basson, Heinrich (5x), Johansson, Jukka (4x), Pulkkinen, Kari (4x), Vovk, Andriy (4x), Letay, Gyula (4x), Melichar, Vojtech (4x), ? (4x), Cuevas Araya, Walter (3x)
7…Be6 — 4.4% (153 parties)
Ambassadeurs : Hijweegen, Claudia (2x), Aguayo, Cesar (1x), Morcken, Otto B (1x), Bernstein, Ossip (1x), Sanz, Joel (1x), Bhat Mohd Rafiq (1x), Ahmed, Farhan Mukhtar (1x), Shirley, Richard (1x)
7…Qc7 — 4.2% (145 parties)
Ambassadeurs : Da Cunha, Marcos Paolozzi S. (2x), Van der Wiel, John T.H. (2x), Bhend, Edwin (1x), Donner, Jan-Hein (1x), O'Kelly de Galway, Alberic (1x), Gligoric, Svetozar (1x), Almgren, Sven (1x), Kovacs, Zoltan (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 7…Be7 7…h6 7…Be6 7…Qc7
<1800 391 58% 25% 9% 3%
1800-2200 1473 57% 32% 4% 4%
2200-2600 911 57% 34% 1% 6%
2600+ 50 88% 10% — —
Évolution par décennie (% des parties)
Décennie N parties 7…Be7 7…h6 7…Be6 7…Qc7
1950s 30 37% 47% 7% 10%
1960s 33 61% 33% — 3%
1970s 35 37% 46% 6% 3%
1980s 79 38% 43% 1% 11%
1990s 478 44% 42% 5% 5%
2000s 937 47% 39% 6% 3%
2010s 1358 61% 28% 4% 4%
2020s 503 78% 15% 3% 3%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
7…Be7 61% 78% ▲ +16.7%
7…h6 28% 15% ▼ -12.5%
7…Be6 4% 3% ▼ -1.6%
7…Qc7 4% 3% ▼ -1.4%
Joueurs célèbres
Champions du monde dans cette position
Carlsen, Magnus — 3 parties
Anand, Viswanathan — 2 parties
Karpov, Anatoly — 1 partie
Ding, Liren — 1 partie
Kramnik, Vladimir — 1 partie
Parties historiques
7…Be7 — 56.3% (1945 parties)
1951 — Beaudin, Leo vs Zalys, Ignas — 0-1 — Montreal CAN
1951 — Janosevic, Dragoljub vs Vidmar, Milan Jr — 1-0 — Ljubljana ch YUG
1952 — Barde Pratham vs Prentice, John G — 0-1 — Vancouver
1952 — Vasconcelos, Fernando vs De Souza Mendes, Joao — 0-1 — Rio de Janeiro BRA
1955 — Donia, M. vs Schweber, Samuel — 0-1 — Antwerp BEL
7…h6 — 31.7% (1096 parties)
1950 — Kozma, Edmund vs Fichtl, Jiri — 0-1 — Zlin ch CZE
1951 — Morel, Fernand vs Kupper, Josef — 0-1 — Lucerne SUI
1951 — O'Kelly de Galway, Alberic vs Pilnik, Herman — 1/2-1/2 — It I Beverwijk NED
1952 — Salisnjak, J. vs Zalys, Ignas — 0-1 — Montreal CAN
1952 — Romero Aguilar, Ricardo Alberto vs Miguel, Nahuel — 0-1 — Havana CUB
7…Be6 — 4.4% (153 parties)
1951 — Bernstein, Ossip vs Sanz, Joel — 1/2-1/2 — Madrid ESP
1952 — Aguayo, Cesar vs Morcken, Otto B — 1-0 — Helsinki olm
1972 — Langenegger, Simon Noah vs Bernard, Ryszard — 0-1 — Varna BUL
1979 — Bhat Mohd Rafiq vs Ahmed, Farhan Mukhtar — 0-1 — Singapore SIN
1982 — Shirley, Richard vs Wall, Bill — 0-1 — ?
7…Qc7 — 4.2% (145 parties)
1957 — O'Kelly de Galway, Alberic vs Gligoric, Svetozar — 0-1 — Bognor Regis
1959 — Bhend, Edwin vs Donner, Jan-Hein — 1-0 — Zurich SUI
1959 — Giterman, Shlomo vs Aronin, Lev — 1/2-1/2 — Baku AZE
1965 — Almgren, Sven vs Kovacs, Zoltan — 0-1 — Los Angeles, CA USA
1975 — Westerinen, Heikki M.J. vs Browne, Walter Shawn — 1-0 — Mannheim GER