B51m - 4.O-O - Moscow 3…Nc6 4.O-O (1947)

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B51m — Moscow 3…Nc6 4.O-O (1947)
1.e4 c5 2.Nf3 d6 3.Bb5+ Nc6 4.O-O
Les coups candidats
Ambassadeurs : Tiviakov, Sergei (64x), Da Silva Filho, Alcindo Luz Bastos (55x), Movsesian, Sergei (34x), Grivas, Efstratios (34x), Andrason, Karl Oddur (33x), ? (33x), Glek, Igor (27x), Hracek, Zbynek (25x)
4…Bg4 — 4.3% (590 parties)
Ambassadeurs : Tiviakov, Sergei (7x), Larsen, Bent Ravn (5x), Sedina, Elena (5x), Furman, Semyon (4x), Perenyi, Bela (4x), Movsesian, Sergei (4x), Kohout, Josef (4x), Shishov, Mikhail (3x)
4…Nf6 — 4.2% (576 parties)
Ambassadeurs : Martin Gonzalez, Angel (4x), Doubleday, William G. (3x), Cukrowski, Filip (3x), Menzi, Nezihe Ezgi (3x), Tarazi, Andre (2x), Manuel A. Mateus (2x), Kaiszauri, Konstanty (2x), Kersten, Uwe (2x)
4…a6 — 3.2% (434 parties)
Ambassadeurs : Lombardy, William J (4x), Evans, Larry (3x), Goldenberg, Richard (3x), Bonch-Osmolovsky, Mikhail (2x), Radovici, Corvin (2x), Boleslavsky, Isaac (2x), Barendregt, Johan (2x), O'Kelly, Albéric de Galway (2x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 4…Bd7 4…Bg4 4…Nf6 4…a6
<1800 620 67% 6% 9% 7%
1800-2200 4435 76% 5% 6% 4%
2200-2600 6996 90% 4% 2% 1%
2600+ 445 97% 1% 1% —
Évolution par décennie (% des parties)
Décennie N parties 4…Bd7 4…Bg4 4…Nf6 4…a6
1950s 78 29% 26% 10% 22%
1960s 58 45% 19% — 22%
1970s 277 64% 16% 4% 9%
1980s 445 77% 7% 6% 5%
1990s 1867 76% 7% 4% 5%
2000s 3847 82% 4% 5% 3%
2010s 4964 86% 3% 4% 2%
2020s 2039 88% 2% 4% 2%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4…Bd7 86% 88% ▲ +2.2%
4…Bg4 3% 2% ▼ -1.1%
4…Nf6 4% 4% -0.2%
4…a6 2% 2% ▼ -0.5%
Joueurs célèbres
Champions du monde dans cette position
Anand, Viswanathan — 10 parties
Ju, Wenjun — 9 parties
Gukesh D — 9 parties
Tal, Mikhail — 8 parties
Kasparov, Garry — 5 parties
Karpov, Anatoly — 3 parties
Hou, Yifan — 3 parties
Carlsen, Magnus — 3 parties
Kramnik, Vladimir — 2 parties
Botvinnik, Mikhail — 1 partie
Parties historiques
4…Bd7 — 82.4% (11189 parties)
1950 — Sokolsky, Alexey vs Geller, Efim P. — 1-0 — Kiev UKR
1951 — Lokvenc, Josef vs Milic, Borislav — 1-0 — Vienna AUT
1951 — Gligoric, Svetozar vs Nedeljkovic, Srecko M — 1/2-1/2 — Ljubljana
1951 — Trifunovic, Petar vs Nedeljkovic, Srecko M — 1/2-1/2 — Ljubljana
1951 — Aadhitha Karikalan vs Trifunovic, Petar — 1/2-1/2 — Ljubljana
4…Bg4 — 4.3% (590 parties)
1950 — Aronin, Lev vs Soloviev, Vladimir A — 0-1 — Gorky
1950 — Milic, Borislav vs Pirc, Vasja — 1/2-1/2 — Bled SLO
1950 — Sokolsky, Alexey vs Aronin, Lev — 0-1 — Moscow RUS
1950 — Boleslavsky, Isaac vs Aronin, Lev — 0-1 — Moskou ch-URS
1951 — Shagalovich, Abo vs Kondratiev, Aleksandr — 1-0 — Leningrad RUS
4…Nf6 — 4.2% (576 parties)
1950 — O'Kelly, Albéric de Galway vs Miguel, Nahuel — 0-1 — Amsterdam NED
1950 — Abramov, Lev vs Lisitsin, Georgy — 0-1 — URS-ch sf Leningard
1954 — Madaminov, Mukhiddin vs Salov, Vitaly V. — 1-0 — Riga LAT
1954 — Bouwmeester, Andre vs Ten Bosch — 0-1 — NED
1954 — Rossolimo, Nicolas vs Burger, PJ — 1/2-1/2 — New York ch-USA
4…a6 — 3.2% (434 parties)
1950 — Bonch-Osmolovsky, Mikhail vs Petrosian, Tigran V. — 1/2-1/2 — Moscow RUS
1950 — Bonch-Osmolovsky, Mikhail vs Petrosian, Arshak B — 1/2-1/2 — Moskva ch-city
1950 — Trifunovic, Petar vs Sanguinetti, Ricardo — 1-0 — Mar del Plata ARG
1951 — Szilagyi, Gyorgy Laszlo vs Szabo, Laszlo — 0-1 — Budapest HUN
1953 — Milev, Zdravko vs Troianescu, Octav — 1-0 — Bucharest ROU