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A21s — Kramnik-Shirov (2008)
1.c4 e5 2.Nc3 Bb4 3.Nd5 Bc5
Les coups candidats
4.e3 — 40.2% (516 parties)
Ambassadeurs : Walton, John C. (5x), Sokolov, Ivan (4x), Andrews, Graham (4x), Cirulis, Ilmars (4x), Reinderman, Dimitri (3x), Erdogdu, Muammer Mustafa (3x), Timman, Jan H (3x), Anand, Viswanathan (3x)
4.Nf3 — 40.2% (516 parties)
Ambassadeurs : Sokolov, Ivan (12x), McNab, Colin A (7x), Anand, Viswanathan (7x), Volkov, Sergey (7x), Moiseenko, Alexander (5x), Morley, Paul (5x), Gyimesi, Zoltan (4x), Tomashevsky, Evgeny (4x)
4.b4 — 14.3% (183 parties)
Ambassadeurs : Zhak, Boris (3x), Anand, Viswanathan (3x), Gurgenidze, Bukhuti (2x), Timman, Jan H (2x), Rausis, Igors (2x), Huene, Anne (2x), Vysochin, Spartak (2x), Draskovic, Luka (2x)
4.g3 — 2.1% (27 parties)
Ambassadeurs : Reisch, Stefan (2x), Mrkos, Miroslav (1x), Ptacnik, Stanislav (1x), Dam, Ruurd (1x), Mathonia, Claude (1x), Gottschlich, Carsten (1x), Domnick, Andreas (1x), Seuffert, Gabriel, Dr. (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 4.e3 4.Nf3 4.b4 4.g3
<1800 91 41% 32% 14% 7%
1800-2200 417 43% 33% 17% 3%
2200-2600 582 40% 45% 13% 2%
2600+ 84 36% 57% 7%
Évolution par décennie (% des parties)
Décennie N parties 4.e3 4.Nf3 4.b4 4.g3
1960s 2 50%
1970s 2 100%
1980s 15 40% 40% 13%
1990s 154 40% 27% 25% 3%
2000s 215 37% 35% 18% 4%
2010s 616 35% 49% 12% 2%
2020s 279 55% 32% 10% 1%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4.e3 35% 55% ▲ +19.9%
4.Nf3 49% 32% ▼ -16.8%
4.b4 12% 10% ▼ -2.0%
4.g3 2% 1% ▼ -1.2%
Joueurs célèbres
Champions du monde dans cette position
Anand, Viswanathan — 10 parties
Carlsen, Magnus — 3 parties
Kramnik, Vladimir — 2 parties
Ju, Wenjun — 2 parties
Parties historiques
4.e3 — 40.2% (516 parties)
1965 — Shipov, Boris vs Liu, Wenzhe — 0-1 — Shanghai CHN
1980 — Suba, Mihai vs Knezevic, Milorad — 1/2-1/2 — Erevan ARM
1985 — Smejkal, Jan vs Timman, Jan H — 1/2-1/2 — Zagreb / Rijeka
1987 — Backe, Peter vs Johansson, Martin 1979 — 1-0 — Solna
1987 — Backe, Peter vs Bergstrom, Christer — 0-1 — Stockholm SWE
4.Nf3 — 40.2% (516 parties)
1980 — Ionov, Sergey vs Zhelnin, Vladimir V — 1-0 — Jurmala LAT
1981 — Piasetski, Leon vs Hebert, Jean — 0-1 — Montreal CAN
1985 — Adorjan, Andras vs Stoica, Valentin — 1/2-1/2 — Lucerne SUI
1985 — Adorjan, Andras vs Timman, Jan H — 1/2-1/2 — Linares ESP
1987 — Chernin, Alexander vs Psakhis, Lev — 1/2-1/2 — Moscow RUS
4.b4 — 14.3% (183 parties)
1976 — Katalymov, Boris vs Gurgenidze, Bukhuti — 1-0 — Rostov RUS
1976 — Katalimov, B vs Gurgenidze, Bukhuti — 1-0 — Rostov on Don
1986 — Gross, Klaus-Juergen vs Lau, Ralf — 0-1 — Duitsland tt
1987 — Goonetilleke, L C vs Finegold, Benjamin — 0-1 — Midwest Masters Inv
1990 — Jolles, Hajo vs Van der Weij, Anton — 0-1 — Dieren open
4.g3 — 2.1% (27 parties)
1992 — Dam, Ruurd vs Mathonia, Claude — 0-1 — Groningen open
1994 — Gottschlich, Carsten vs Domnick, Andreas — 1-0 — DLM Binz
1997 — Mrkos, Miroslav vs Ptacnik, Stanislav — 1/2-1/2 — Czechia
1997 — Seuffert, Gabriel, Dr. vs Reisch, Stefan — 1/2-1/2 — Wuerzburg
2000 — Trautmann, Johannes vs Reisch, Stefan — 1-0 — GER