A33e - 6.a3 - Symmetrical, Two Knights (1949)

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A33e — Symmetrical, Two Knights (1949)
1.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Nc6 6.a3
Les coups candidats
6…Be7 — 38.8% (922 parties)
Ambassadeurs : Fedukin, Alexandre (12x), Korchnoi, Viktor (10x), Jumabayev, Rinat (7x), Akesson, Ralf (7x), Lenic, Luka (6x), Iturrizaga Bonelli, Eduardo (6x), Vachier-Lagrave, Maxime (6x), Dominguez Perez, Leinier (6x)
Ambassadeurs : Pogorelov, Ruslan (12x), Bacrot, Etienne (7x), Krasenkow, Michal (7x), Navara, David (6x), Bakheet Farag (5x), De Firmian, Nick (4x), Nagy, Gabor (4x), Kudr, Roman (4x)
6…d5 — 14.4% (342 parties)
Ambassadeurs : Speelman, Jon S (4x), Lenderman, Aleksandr (3x), Stangl, Markus (2x), Huda, Rehan (2x), Arbakov, Valentin (2x), Savon, Vladimir (2x), Eljanov, Pavel (2x), Lorparizangeneh, Shahin (2x)
6…Nxd4 — 6.4% (152 parties)
Ambassadeurs : Speelman, Jon S (4x), Korchnoi, Viktor (3x), Sax, Gyula (3x), Timman, Jan H (3x), Da Silva Filho, Alcindo Luz Bastos (3x), Palac, Mladen (2x), Gorbatov, Alexej (2x), Karpov, Anatoly (2x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 6…Be7 6…Bc5 6…d5 6…Nxd4
<1800 79 52% 19% 11% 5%
1800-2200 546 43% 23% 17% 5%
2200-2600 1410 36% 32% 14% 6%
2600+ 224 45% 31% 10% 10%
Évolution par décennie (% des parties)
Décennie N parties 6…Be7 6…Bc5 6…d5 6…Nxd4
1950s 3 — — 67% —
1960s 2 50% — 50% —
1970s 4 — — 75% —
1980s 16 6% 12% 56% 12%
1990s 240 20% 34% 18% 10%
2000s 611 37% 22% 15% 12%
2010s 1123 46% 28% 12% 4%
2020s 375 34% 40% 17% 1%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
6…Be7 46% 34% ▼ -12.3%
6…Bc5 28% 40% ▲ +11.4%
6…d5 12% 17% ▲ +5.1%
6…Nxd4 4% 1% ▼ -3.2%
Joueurs célèbres
Champions du monde dans cette position
Anand, Viswanathan — 8 parties
Ju, Wenjun — 7 parties
Carlsen, Magnus — 5 parties
Kramnik, Vladimir — 3 parties
Kasparov, Garry — 3 parties
Karpov, Anatoly — 2 parties
Ding, Liren — 2 parties
Hou, Yifan — 2 parties
Gukesh D — 1 partie
Parties historiques
6…Be7 — 38.8% (922 parties)
1961 — Gusev, Yuri S vs Veresov, Gavriil — 0-1 — URS-ch29 sf Novgorod
1989 — Speelman, Jon S vs Gulko, Boris — 1/2-1/2 — Amsterdam NED
1990 — Gulko, Boris vs De Firmian, Nick — 1/2-1/2 — Moscow RUS
1991 — Gomez Esteban, Juan Mario vs Izeta Txabarri, Felix — 0-1 — Elgoibar ESP
1991 — Korchnoi, Viktor vs Sax, Gyula — 1-0 — Wijk aan Zee cm rapid
6…Bc5 — 28.9% (686 parties)
1987 — Borchert, Eckhardt vs Niering, Thorsten — 0-1 — Dortmund open
1989 — Hansen, Lars Bo vs Hansen, Curt — 1/2-1/2 — Vejstrup DEN
1990 — Dorfman, Iossif vs Hansen, Curt — 1/2-1/2 — Debrecen HUN
1990 — Stohl, Igor vs Khalifman, Alexander — 0-1 — Manila PHI
1990 — Danailov, Silvio vs Wohl, Aleksandar H — 1-0 — ?
6…d5 — 14.4% (342 parties)
1957 — Papp, Laszlo vs Flórián, Tibor — 1-0 — HUN-ch Budapest HUN
1959 — Djaja, Dragutin vs Avirovic, Djordje — 1-0 — Belgrade SRB
1966 — Wilkerson, Max B vs Bourke, Alex — 0-1 — San Francisco, Ca
1970 — Jimenez Zerquera, Eleazar vs Aquillis Gabriel Hernandez — 1/2-1/2 — Havana CUB
1975 — Teittinen, Eino vs Linden, Leo — 1-0 — ?
6…Nxd4 — 6.4% (152 parties)
1983 — Avery, Rod vs Poschel, Paul — 1/2-1/2 — Ann Arbor ch-MI op
1987 — Haparta, Jacek vs Luckhaus — 0-1 — Wuerzburg
1991 — Gorbatov, Alexej vs Donchenko, Anatoly — 1-0 — Leningrad RUS
1991 — Korchnoi, Viktor vs Sax, Gyula — 1/2-1/2 — Wijk aan Zee NED
1991 — Korchnoi, Viktor vs Sax, Gyula — 1/2-1/2 — Wijk aan Zee NED