D74f - 7…c5 8.e4 (1947)

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D74f —
1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.Nf3 O-O 6.cxd5 Nxd5 7.O-O c5 8.e4
Les coups candidats
Ambassadeurs : Nepomniachtchi, Ian (8x), Donner, Jan-Hein (3x), Botvinnik, Mikhail (3x), Yuferov, Sergey N (3x), Tarasov, Vitaly (2x), Milev, Zdravko (2x), Szabo, Laszlo (2x), Fairhurst, William (2x)
8…Nb6 — 24.3% (63 parties)
Ambassadeurs : Walker, Martin G (3x), Maderna, Carlos (2x), Wexler, Bernardo (2x), Donner, Jan-Hein (2x), Lehmann, Heinz (2x), Forintos, Gyozo V (1x), Navarovszky, Laszlo (1x), Lundin, Erik (1x)
8…Nb4 — 6.6% (17 parties)
Ambassadeurs : Castagna, Renzo (1x), Gereben, Erno (1x), Matchett (1x), Aye Chan May (1x), Cividali, Emilio (1x), Fasoli S (1x), ? (1x), Byrne, Stewart (1x)
8…Nc7 — 1.2% (3 parties)
Ambassadeurs : Kozlov, Vladimir E (1x), Tunik, Gennady (1x), Franklin, Samuel G A (1x), Wilson, Alexandra (1x), Stupak, Kirill (1x), Orlynskaya Darya (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 8…Nf6 8…Nb6 8…Nb4 8…Nc7
<1800 5 80% — 20% —
1800-2200 79 66% 24% 9% 1%
2200-2600 111 71% 23% 5% 1%
2600+ 10 80% 20% — —
Évolution par décennie (% des parties)
Décennie N parties 8…Nf6 8…Nb6 8…Nb4 8…Nc7
1950s 35 69% 29% 3% —
1960s 13 62% 31% 8% —
1970s 4 50% 50% — —
1980s 13 69% 15% 8% 8%
1990s 17 59% 29% 12% —
2000s 42 69% 19% 7% 5%
2010s 106 73% 23% 5% —
2020s 29 59% 28% 14% —
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
8…Nf6 73% 59% ▼ -14.0%
8…Nb6 23% 28% ▲ +4.9%
8…Nb4 5% 14% ▲ +9.1%
8…Nc7 0% 0% +0.0%
Joueurs célèbres
Champions du monde dans cette position
Botvinnik, Mikhail — 3 parties
Smyslov, Vladimir — 1 partie
Gukesh D — 1 partie
Parties historiques
8…Nf6 — 68.0% (176 parties)
1950 — Schramm, Eduard vs Mueller, Hans — 1-0 — Saarbruecken
1951 — Reinhardt, Enrique vs Eliskases, Erich — 0-1 — Mar del Plata ARG
1951 — Botvinnik, Mikhail vs Ragozin, Viacheslav — 1-0 — Moscow RUS
1951 — Benko, Francisco vs Sanguinetti, Renato — 1-0 — Buenos Aires ARG
1951 — Tarasov, Vitaly vs Ali, Zak — 1/2-1/2 — Baku AZE
8…Nb6 — 24.3% (63 parties)
1952 — Bobotsov, Milko G vs Padevsky, Nikola — 1/2-1/2 — Sofia BUL
1954 — Maderna, Carlos vs Wexler, Bernardo — 1/2-1/2 — Mar del Plata zt Mar
1954 — Forintos, Gyozo V vs Navarovszky, Laszlo — 1/2-1/2 — Hungary ch
1954 — Lundin, Erik vs Koskinen, Hannu E. — 1-0 — Praag zt
1954 — Maderna, Carlos vs Wexler, Bernardo — 1/2-1/2 — Mar del Plata ARG
8…Nb4 — 6.6% (17 parties)
1959 — Matchett vs Aye Chan May — 0-1 — ?
1962 — Castagna, Renzo vs Gereben, Erno — 0-1 — It IIb Beverwijk NED
1988 — Cividali, Emilio vs Fasoli S — 1-0 — ?
1993 — Kustar, Sandor vs Nogrady, Vilmos — 0-1 — Budapest HUN
1998 — ? vs Byrne, Stewart — 1-0 — Melbourne AUS
8…Nc7 — 1.2% (3 parties)
1984 — Kozlov, Vladimir E vs Tunik, Gennady — 0-1 — URS
2006 — Stupak, Kirill vs Orlynskaya Darya — 0-1 — Dnepropetrovsk UKR
2007 — Franklin, Samuel G A vs Wilson, Alexandra — 0-1 — Wokefield Park ENG