B51b - 4.c3 - Moscow 3…Nd7 4.c3 (1948)

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B51b — Moscow 3…Nd7 4.c3 (1948)
1.e4 c5 2.Nf3 d6 3.Bb5+ Nd7 4.c3
Les coups candidats
4…Nf6 — 82.3% (2417 parties)
Ambassadeurs : Svetushkin, Dmitry (22x), Markidis, Konstantinos (20x), Vujosevic, Vladimir (13x), Miroshnichenko, Evgenij (12x), Bernal Varela, Nelson (11x), Merry, Alan B (10x), Vachier-Lagrave, Maxime (10x), Adewumi, Tanitoluwa (9x)
4…a6 — 16.3% (480 parties)
Ambassadeurs : Kirk, Ezra (3x), Hunold, Rolf (2x), Ivanov, Vladimir A. (2x), Dijkhuis, Oele (2x), Plenca, Jadranko (2x), Taskiran, Recep (2x), Kwon, Sehyun (2x), Arakhamia-Grant, Ketevan (2x)
4…g6 — 0.6% (17 parties)
Ambassadeurs : Blasovszky, Istvan (1x), Kahn, Evarth Dr. (1x), Andrew Davids (1x), Aabir Mukherjee (1x), Chuvilo, Konstantin (1x), Chudinovskikh, Alexander M (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 123 61% 34% 2% —
1800-2200 1002 74% 24% 1% 0%
2200-2600 1601 89% 10% 0% 0%
2600+ 104 94% 6% — —
Évolution par décennie (% des parties)
Décennie N parties 4…Nf6 4…a6 4…g6 4…e6
1950s 16 62% 38% — —
1960s 9 67% 22% — 11%
1970s 41 93% 7% — —
1980s 52 90% 10% — —
1990s 215 83% 15% 1% 0%
2000s 427 82% 16% 0% 1%
2010s 1255 83% 15% 1% 0%
2020s 921 81% 18% 1% 0%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4…Nf6 83% 81% ▼ -2.4%
4…a6 15% 18% ▲ +3.0%
4…g6 1% 1% -0.0%
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 — 82.3% (2417 parties)
1950 — Grushkova, Bellska Nina vs Chaude de Silans, Chantal — 0-1 — Moscow RUS
1950 — Trevenen, Henry Vickers W vs Abiolla James — 1/2-1/2 — Southsea
1954 — Koskinen, Heikki vs Anay Barche — 0-1 — Praag zt
1954 — Bak, Istvan vs Szilagyi, Gyorgy Laszlo — 1-0 — Budapest HUN
1955 — Bak, Istvan vs Ujtelky, Maximilián Samuel Rudolf — 1/2-1/2 — Prague CZE
4…a6 — 16.3% (480 parties)
1954 — Kracmar, Jindrich vs Brat, Vaclav Dr — 0-1 — Jablonec nad Nisou
1954 — Walther, Edgar vs Gereben, Erno — 1/2-1/2 — Amsterdam NED
1957 — Shishov, Mikhail vs Sardarov, Edward — 1/2-1/2 — Tbilisi GEO
1957 — Diaz Carias, Salvador vs Reissman, Paul — 1-0 — Caracas VEN
1958 — Toran Albero, Roman vs Bisguier, Arthur B — 1/2-1/2 — Munich GER
4…g6 — 0.6% (17 parties)
1993 — Blasovszky, Istvan vs Kahn, Evarth Dr. — 0-1 — Budapest HUN
1995 — Andrew Davids vs Aabir Mukherjee — 1/2-1/2 — corr ch-GB open
1995 — Chuvilo, Konstantin vs Chudinovskikh, Alexander M — 1/2-1/2 — RUS-chT Briansk
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