B31b - 4.Nc3 - Rossolimo

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B31b —
1.e4 c5 2.Nf3 Nc6 3.Bb5 g6 4.Nc3
Eval: [-0.12]
Les coups candidats
4…Bg7 — 89.2% (2058 parties)
Ambassadeurs : Nieminen, Kari (11x), Gdanski, Jacek (10x), Mary, Patrick (9x), Llaneza Vega, Marcos (8x), Nicolaescu, Nicolae (8x), Al-Mudahka, Mohd (7x), Bhowmik Roy Chowdhury, Sankha (6x), Hild, Harald (6x)
4…Nd4 — 9.1% (209 parties)
Ambassadeurs : Gdanski, Jacek (9x), Paredes, Carlos (3x), Nieminen, Kari (2x), Keitlinghaus, Ludger (2x), Van Wely, Loek (2x), Traistaru, Teodora (2x), Berger, Steve (2x), Matsuura, Everaldo (2x)
4…a6 — 0.8% (19 parties)
Ambassadeurs : Quesada Fernandez, Gonzalo (1x), Bernaldo de Quiros, Maria Raquel (1x), Biosca Cid, Merce (1x), Lojano Quiroga, Fabiola (1x), Fantoni Franco (1x), Jonsson, Gudbrandur (1x), Moore, Cortland (1x), Ditt, Jutta (1x)
4…Nf6 — 0.3% (8 parties)
Ambassadeurs : Breitenstein, Erich (1x), Fritsche, Frank (1x), Van Nies, Pauline (1x), Fages, Jorge Juan (1x), Makka, Ioulia (1x), Tjolsen, Katrine (1x), Dalar, Ali Riza (1x), Hiçdönmez, Hakan (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 4…Bg7 4…Nd4 4…a6 4…Nf6
<1800 91 91% 7% 1% 1%
1800-2200 792 89% 9% 1% 1%
2200-2600 944 89% 11% 0% 0%
2600+ 47 91% 9% — —
Évolution par décennie (% des parties)
Décennie N parties 4…Bg7 4…Nd4 4…a6 4…Nf6
1880s 1 100% — — —
1900s 2 100% — — —
1920s 1 100% — — —
1930s 1 100% — — —
1950s 2 100% — — —
1960s 3 67% 33% — —
1970s 6 100% — — —
1980s 26 96% 4% — —
1990s 252 89% 9% 1% —
2000s 747 90% 9% 1% 0%
2010s 949 90% 8% 1% 0%
2020s 318 85% 14% 0% 0%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4…Bg7 90% 85% ▼ -5.5%
4…Nd4 8% 14% ▲ +6.1%
4…a6 1% 0% ▼ -0.5%
4…Nf6 0% 0% -0.1%
Joueurs célèbres
Champions du monde dans cette position
Carlsen, Magnus — 2 parties
Anand, Viswanathan — 1 partie
Kasparov, Garry — 1 partie
Parties historiques
4…Bg7 — 89.2% (2058 parties)
1887 — Noa, Joseph vs White, Max — 1/2-1/2 — Frankfurt GER
1904 — Mieses, Jacques vs John, Walter — 1/2-1/2 — Coburg
1909 — Kvicala, Jan vs Hromadka, Karel — 1-0 — Prague CZE
1923 — Lyngholm, Arthur vs Nimzowitsch, Aron — 1/2-1/2 — Slagelse
1939 — Thomas, George Alan vs da Silva Rocha, Adhemar — 1-0 — Buenos Aires ARG
4…Nd4 — 9.1% (209 parties)
1966 — Hirsh, G. vs Martinowsky, Dr Eugene — 0-1 — ?
1987 — Seul, Georg vs Dietze, Frank — 1-0 — Duitsland tt
1990 — Pradelle, J. vs Birens, Eric-Andre — 0-1 — Toulouse FRA
1990 — Heitsch, Bernhard, Dr. vs Koehler, Ronald — 1/2-1/2 — Hessen qual
1992 — Grabher, Heinz vs Fiedler, Brian — 0-1 — Czechoslovakia
4…a6 — 0.8% (19 parties)
1991 — Biosca Cid, Merce vs Lojano Quiroga, Fabiola — 1-0 — Mar del Plata open
1996 — Quesada Fernandez, Gonzalo vs Bernaldo de Quiros, Maria Raquel — 0-1 — ?
1999 — Fantoni Franco vs Jonsson, Gudbrandur — 1-0 — ?
2001 — Bogdanow, Boris vs Denker, Stephan — 0-1 — Neumuenster
2002 — Hutois, Nicolas vs Drean, Philippe — 0-1 — Fouesnant FRA
4…Nf6 — 0.3% (8 parties)
2004 — Breitenstein, Erich vs Fritsche, Frank — 0-1 — ?
2006 — Van Nies, Pauline vs Fages, Jorge Juan — 0-1 — LSS
2008 — Makka, Ioulia vs Tjolsen, Katrine — 1-0 — Gjovik NOR
2010 — Dalar, Ali Riza vs Hiçdönmez, Hakan — 0-1 — ICCF
2011 — Sánchez Carol, Jesús vs Monreal Godina, José Daniel — 1-0 — ICCF