B51b - 3…Nd7 4.c3 - Moscow

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B51b — Moscow
1.e4 c5 2.Nf3 d6 3.Bb5+ Nd7 4.c3
Les coups candidats
4…Nf6 — 82.4% (2255 parties)
Ambassadeurs : Svetushkin, Dmitry (23x), Markidis, Konstantinos (20x), Vujosevic, Vladimir (13x), Bernal Varela, Nelson (13x), Miroshnichenko, Evgenij (12x), Vachier-Lagrave, Maxime (10x), Merry, Alan B (10x), Adewumi, Tanitoluwa (10x)
4…a6 — 16.3% (446 parties)
Ambassadeurs : Kiik, Kalle (4x), Tartakower, Savielly (3x), Varitski, Igor (3x), Kirk, Ezra (3x), Mar, Karmen (2x), Kohek, Maja (2x), Avaca Brito, Leo (2x), Malar, Pavol (2x)
4…g6 — 0.5% (14 parties)
Ambassadeurs : Chuvilo, Konstantin (1x), Chudinovskikh, Alexander M (1x), Blasovszky, Istvan (1x), Kahn, Evarth Dr. (1x), Andrew Davids (1x), Aabir Mukherjee (1x), Kotan, Ladislav (1x), Pinter, Erik (1x)
4…e6 — 0.3% (9 parties)
Ambassadeurs : Ostrovsky, Alexander (1x), Kotkov, Yuri M (1x), Jacke, Corinna (1x), Fliter, Irena (1x), Zambor, Norbert (1x), Jawor, Mateusz (1x), Chetail, Guillaume (1x), Nicolas, Tristan (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 4…Nf6 4…a6 4…g6 4…e6
<1800 58 52% 43% 3% —
1800-2200 793 72% 26% 1% 1%
2200-2600 1603 89% 10% 0% 0%
2600+ 121 94% 6% — —
Évolution par décennie (% des parties)
Décennie N parties 4…Nf6 4…a6 4…g6 4…e6
1940s 5 20% 80% — —
1950s 17 65% 35% — —
1960s 9 67% 22% — 11%
1970s 41 93% 7% — —
1980s 51 90% 10% — —
1990s 212 83% 15% 1% 0%
2000s 425 82% 16% 0% 1%
2010s 1251 83% 15% 1% 0%
2020s 724 81% 18% 0% 0%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4…Nf6 83% 81% ▼ -1.8%
4…a6 15% 18% ▲ +2.8%
4…g6 1% 0% -0.3%
4…e6 0% 0% -0.1%
Joueurs célèbres
Champions du monde dans cette position
Carlsen, Magnus — 4 parties
Kasparov, Garry — 1 partie
Ju, Wenjun — 1 partie
Gukesh D — 1 partie
Parties historiques
4…Nf6 — 82.4% (2255 parties)
1949 — Simagin, Vladimir vs Abramov, Lev — 1-0 — Moscow RUS
1950 — Grushkova, Bellska Nina vs Chaude de Silans, Chantal — 0-1 — Moscow RUS
1950 — Trevenen, Henry Vickers W vs Aitken, James — 1/2-1/2 — Southsea
1954 — Bilek, Istvan vs Szilagyi, Gyorgy Laszlo — 1-0 — Budapest HUN
1954 — Koskinen, Hannu E. vs Barcza, Gedeon — 0-1 — Prague zt Prague CZE
4…a6 — 16.3% (446 parties)
1948 — Rossolimo, Nicolas vs Tartakower, Savielly — 1/2-1/2 — Paris FRA
1948 — Canal, Esteban vs Najdorf, Miguel — 0-1 — Venice ITA
1949 — Schmidt, Paul Felix vs Tartakower, Savielly — 1-0 — Beverwijk NED
1949 — Bergsma, Klaas vs Tartakower, Savielly — 0-1 — Beverwijk NED
1954 — Walther, Edgar vs Gereben, Erno — 1/2-1/2 — Amsterdam NED
4…g6 — 0.5% (14 parties)
1993 — Blasovszky, Istvan vs Kahn, Evarth Dr. — 0-1 — Budapest HUN
1995 — Chuvilo, Konstantin vs Chudinovskikh, Alexander M — 1/2-1/2 — RUS-chT Briansk
1995 — Andrew Davids vs Aabir Mukherjee — 1/2-1/2 — corr ch-GB open
2004 — Kotan, Ladislav vs Pinter, Erik — 1-0 — Bratislava SVK
2009 — Volcik, Ludek vs Mrazek, Lumir — 0-1 — Czech Republic
4…e6 — 0.3% (9 parties)
1963 — Ostrovsky, Alexander vs Kotkov, Yuri M — 1-0 — Chelyabinsk RUS
1998 — Jacke, Corinna vs Fliter, Irena — 0-1 — Oberhof
2002 — Zambor, Norbert vs Jawor, Mateusz — 1-0 — Presov SVK
2005 — Bogomolow, Sergej vs Buerckner, Hartmut — 1/2-1/2 — GER
2006 — Chetail, Guillaume vs Nicolas, Tristan — 0-1 — Sarzeau