A09m - 2…dxc4 3.g3 e6 - Accepted

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A09m — Accepted
1.Nf3 d5 2.c4 dxc4 3.g3 e6
Eval: [+0.17]
Les coups candidats
4.Qa4+ — 68.6% (1233 parties)
Ambassadeurs : Barsov, Alexei (12x), Lukacs, Peter (9x), Novikov, Igor (8x), Genser, Harald (8x), Mohr, Georg (7x), Spiridonov, Nikola (7x), Beliavsky, Alexander G (7x), Luther, Thomas (7x)
4.Bg2 — 27.3% (491 parties)
Ambassadeurs : Beliavsky, Alexander G (4x), Bosboom, Manuel (4x), Christiansen, Johan-Sebastian (4x), Supi, Luis Paulo (4x), Taimanov, Mark (3x), Serper, Grigory (3x), Kjartansson, Gudmundur (3x), Oparin, Grigoriy (3x)
4.Na3 — 3.2% (57 parties)
Ambassadeurs : Bianco, Daniele (2x), Andriessen, Bart Jan (1x), Ciric, Aleksandar (1x), Stein, Leonid (1x), Keres, Paul Petrovich (1x), Hergott, Deen (1x), Karolyi, Tibor (1x), Sunye Neto, Jaime (1x)
4.Qc2 — 0.7% (12 parties)
Ambassadeurs : Zlotnikov, Mikhail (1x), Strugatsky, Vladimir (1x), Knoedler, Dieter, Dr. (1x), Ekstroem, Roland (1x), Yagiz, Yasin Emrah (1x), Meydan, Ismail (1x), Garza Marco, Sergio (1x), Labena Bernal, Antonio (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 4.Qa4+ 4.Bg2 4.Na3 4.Qc2
<1800 12 67% 17% 17% —
1800-2200 251 61% 31% 7% 1%
2200-2600 1343 71% 26% 2% 1%
2600+ 81 65% 33% 1% —
Évolution par décennie (% des parties)
Décennie N parties 4.Qa4+ 4.Bg2 4.Na3 4.Qc2
1920s 8 75% 25% — —
1930s 3 67% 33% — —
1940s 5 80% 20% — —
1950s 6 50% 50% — —
1960s 12 75% 8% 17% —
1970s 27 70% 30% — —
1980s 78 65% 29% 5% —
1990s 258 77% 20% 3% —
2000s 339 72% 22% 4% 1%
2010s 728 66% 30% 3% 1%
2020s 334 64% 33% 3% 1%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4.Qa4+ 66% 64% ▼ -2.4%
4.Bg2 30% 33% ▲ +2.6%
4.Na3 3% 3% -0.3%
4.Qc2 1% 1% +0.3%
Joueurs célèbres
Champions du monde dans cette position
Kramnik, Vladimir — 4 parties
Ju, Wenjun — 2 parties
Smyslov, Vladimir — 1 partie
Kasparov, Garry — 1 partie
Tal, Mikhail — 1 partie
Botvinnik, Mikhail — 1 partie
Carlsen, Magnus — 1 partie
Anand, Viswanathan — 1 partie
Ding, Liren — 1 partie
Parties historiques
4.Qa4+ — 68.6% (1233 parties)
1923 — Reti, Richard vs Master Walter Aira — 1-0 — Maehrisch Ostrau
1924 — Schmitt, Ludwig vs Maier, Georg — 0-1 — Munich GER
1926 — Reti, Richard vs Tartakower, Savielly — 1-0 — Semmering AUT
1927 — Reti, Richard vs Bogoljubow, Efim — 0-1 — Homburg
1928 — Takacs, Sandor vs Hoenlinger, Baldur — 1-0 — Vienna AUT
4.Bg2 — 27.3% (491 parties)
1925 — De La Torre Huertas, Carlos vs Tartakower, Savielly — 1/2-1/2 — Marienbad CZE
1925 — Zubarev, Nikolay vs Tartakower, Savielly — 1/2-1/2 — Moscow RUS
1930 — Lokvenc, Josef vs Makarczyk, Kazimierz — 1-0 — Hamburg olm
1949 — Christensen, Kurt Verner vs Larsen, Poul M. — 1-0 — ?
1950 — Koberl, Ferenc vs Sebestyen, Balazs — 1/2-1/2 — Budapest HUN
4.Na3 — 3.2% (57 parties)
1967 — Andriessen, Bart Jan vs Ciric, Aleksandar — 1/2-1/2 — Zwolle NED
1969 — Stein, Leonid vs Keres, Paul Petrovich — 1/2-1/2 — Tallinn Tallinn EST
1982 — Sunye Neto, Jaime vs Nogueiras Santiago, Jesus — 1-0 — Seville ESP
1984 — Mathieu, Louis vs Grizou, Regis — 0-1 — AJEC/1144 corr
1987 — Hergott, Deen vs Karolyi, Tibor — 0-1 — Brussels BEL
4.Qc2 — 0.7% (12 parties)
2002 — Zlotnikov, Mikhail vs Strugatsky, Vladimir — 0-1 — Seattle, WA USA
2005 — Garza Marco, Sergio vs Labena Bernal, Antonio — 1-0 — Zaragoza
2007 — Yagiz, Yasin Emrah vs Meydan, Ismail — 1-0 — ICCF
2007 — Matamoros Franco, Carlos S. vs Pantaleoni, Claudio — 1-0 — Porto Mannu PAL
2009 — Knoedler, Dieter, Dr. vs Ekstroem, Roland — 1-0 — Switzerland