A47l - 4.e3 (2008)

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A47l —
1.d4 Nf6 2.Nf3 b6 3.Bf4 e6 4.e3
Les coups candidats
Ambassadeurs : Knezevic, Milorad (17x), Ortega, Lexy (17x), Lenz, Juergen (17x), Prie, Eric (15x), Contreras Poblete, Juan Antonio (14x), Ledger, Stephen C (11x), Karlik, Vladimir (11x), Bronstein, David I (10x)
4…Be7 — 5.3% (351 parties)
Ambassadeurs : Mueller, Helge (2x), Backwinkel, Paul (1x), Woller, Rainer (1x), Gueroff, Eduard (1x), Wind, Michiel (1x), Bronstein, David I (1x), Cosic, Marin (1x), Brkljaca, Ante (1x)
Ambassadeurs : Seer, Alfred Hasso (2x), ? (2x), Kozul, Zdenko (1x), Crawley, Gavin (1x), Delfani, Goldost (1x), Vogel, Jaap (1x), Ferry, Roger (1x), Bonhomme, Marcel (1x)
4…Nh5 — 0.6% (39 parties)
Ambassadeurs : Mira, Helene (1x), Widjajanti, C. (1x), Klifoth, Kurt (1x), Olesen, Martin (1x), Aerts, Bart (1x), Znamenacek, Kvetoslav (1x), Kovacevic, Vladimir (1x), Fucak, Emilio Milko (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 4…Bb7 4…Be7 4…c5 4…Nh5
<1800 557 93% 6% 1% —
1800-2200 3114 92% 5% 1% 1%
2200-2600 2284 91% 6% 1% 1%
2600+ 98 85% 13% 2% —
Évolution par décennie (% des parties)
Décennie N parties 4…Bb7 4…Be7 4…c5 4…Nh5
1950s 5 100% — — —
1960s 11 100% — — —
1970s 43 88% 12% — —
1980s 249 90% 6% 1% 1%
1990s 725 91% 5% 1% 1%
2000s 1470 91% 6% 1% 0%
2010s 3060 92% 5% 1% 1%
2020s 1011 92% 6% 1% 1%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4…Bb7 92% 92% +0.4%
4…Be7 5% 6% ▲ +0.5%
4…c5 1% 1% -0.4%
4…Nh5 1% 1% +0.1%
Joueurs célèbres
Champions du monde dans cette position
Hou, Yifan — 5 parties
Ju, Wenjun — 4 parties
Karpov, Anatoly — 3 parties
Kramnik, Vladimir — 3 parties
Kasparov, Garry — 2 parties
Carlsen, Magnus — 2 parties
Parties historiques
4…Bb7 — 91.7% (6026 parties)
1951 — Fel, C. vs Anderson, Frank Ross — 0-1 — Toronto CAN
1955 — Dollstadt, Jean Walter vs Chaude de Silans, Chantal — 1/2-1/2 — Toulouse FRA
1958 — Breustedt, Werner vs Pietzsch, Wolfgang — 1/2-1/2 — GDR-ch Schkopau GER
1959 — Malcolm, Colin M vs Nield, Alan Edgar — 1-0 — York ENG
1959 — Badestein, Hartmut, Prof. Dr. vs Pietzsch, Wolfgang — 0-1 — GDR-ch Leipzig GER
4…Be7 — 5.3% (351 parties)
1972 — Aegerter, Martin vs Martz William R — 1/2-1/2 — Lone Pine, CA USA
1975 — Sinka, Brigitta vs Alisalama Nirina Jean Michel — 0-1 — Halle GER
1977 — Cosic, Marin vs Brkljaca, Ante — 1-0 — Zagreb CRO
1977 — Weiss, Augustin vs Ftacnik, Lubomir — 1/2-1/2 — Stary Smokovec SVK
1977 — Szajna, Wladyslaw vs Szumilo, Witold — 1-0 — Rzeszow op
4…c5 — 1.1% (75 parties)
1981 — Ferry, Roger vs Bonhomme, Marcel — 1-0 — Vitrolles
1983 — Delfani, Goldost vs Vogel, Jaap — 1-0 — NED-ch sf B Eindhoven NED
1984 — Kozul, Zdenko vs Crawley, Gavin — 1-0 — Oakham ENG
1990 — Georgiades , Giorgos-Chris vs Le Blancq, Simon — 0-1 — Novi Sad olm
1991 — Balogh, Bela vs Varasdy, Imre — 1/2-1/2 — HUN
4…Nh5 — 0.6% (39 parties)
1984 — Mira, Helene vs Widjajanti, C. — 1/2-1/2 — Thessaloniki GRE
1988 — Klifoth, Kurt vs Olesen, Martin — 1/2-1/2 — Lyngby open
1990 — Aerts, Bart vs Znamenacek, Kvetoslav — 0-1 — Dortmund open
1991 — Nielsen, Steen (SUI) vs Erhard, Steen — 0-1 — Copenhagen DEN
1992 — Lenz, Juergen vs King, Daniel J — 1/2-1/2 — Neu Isenburg