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A33b — Symmetrical, Two Knights (1955)
1.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Nc6 6.Bf4
Les coups candidats
6…d5 — 51.1% (266 parties)
Ambassadeurs : Vachier-Lagrave, Maxime (9x), Vleer, Henk (6x), Ragozin, Evgeni (3x), Murey, Jacob (3x), Prraneeth Vuppala (3x), Rogulj, Branko (3x), Gelfand, Boris (3x), Korchnoi, Viktor (2x)
6…d6 — 20.3% (106 parties)
Ambassadeurs : Li, Rachael (3x), Szabo, Vilmos (2x), Indjic, Aleksandar (2x), Cordova, Emilio (2x), Schoeneberg, Manfred (1x), Gross, Stefan (1x), Smejkal, Jan (1x), Sosonko, Gennadi (1x)
6…Bb4 — 10.4% (54 parties)
Ambassadeurs : Ragozin, Evgeni (2x), Hulak, Krunoslav (2x), Ivanchuk, Vasyl (2x), Serrer, Christoph (1x), Boersma, Paul (1x), Korchnoi, Viktor (1x), Polugaevsky, Lev (1x), Laube, Reiner (1x)
6…a6 — 10.2% (53 parties)
Ambassadeurs : ? (2x), Aadhitha Karikalan (1x), Alsjo, Sigge (1x), Ungureanu, Emil (1x), Garcia Martinez, Silvino (1x), Guddahl, Viggo (1x), Sorensen, Dick (1x), Rashkovsky, Nukhim N (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 6…d5 6…d6 6…Bb4 6…a6
<1800 10 50% 10% 20% 10%
1800-2200 99 42% 24% 9% 14%
2200-2600 319 51% 21% 10% 10%
2600+ 64 78% 12% 5% —
Évolution par décennie (% des parties)
Décennie N parties 6…d5 6…d6 6…Bb4 6…a6
1950s 1 — — — 100%
1970s 4 — — — 75%
1980s 23 48% 17% 30% —
1990s 55 33% 16% 24% 16%
2000s 86 43% 19% 15% 15%
2010s 222 54% 25% 7% 6%
2020s 130 62% 17% 4% 10%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
6…d5 54% 62% ▲ +7.5%
6…d6 25% 17% ▼ -7.9%
6…Bb4 7% 4% ▼ -3.4%
6…a6 6% 10% ▲ +3.7%
Joueurs célèbres
Champions du monde dans cette position
Carlsen, Magnus — 1 partie
Kramnik, Vladimir — 1 partie
Parties historiques
6…d5 — 51.1% (266 parties)
1980 — Stean, Michael F vs Liberzon, Vladimir M — 1-0 — Baden-Baden GER
1980 — Trois, Francisco R.T. vs Rogulj, Branko — 0-1 — Virovitica CRO
1980 — Ristic, Nenad vs Rogulj, Branko — 1/2-1/2 — Smederevska Palanka
1982 — Korchnoi, Viktor vs Timman, Jan H — 1-0 — Hilversum NED
1982 — Andersson, Ulf vs Sosonko, Gennadi — 1/2-1/2 — Tilburg NED
6…d6 — 20.3% (106 parties)
1980 — Smejkal, Jan vs Sosonko, Gennadi — 1/2-1/2 — Malta ol
1981 — Aguila, Gustavo vs D`Arruda, Ricardo D. — 1-0 — Embalse
1982 — Schoeneberg, Manfred vs Gross, Stefan — 1-0 — Leipzig GER
1986 — Shabalov, Alexander vs Sokolov, Andrei — 1/2-1/2 — Minsk BLR
1990 — Keitlinghaus, Ludger vs Schmittdiel, Eckhard — 1-0 — Prague CZE
6…Bb4 — 10.4% (54 parties)
1980 — Korchnoi, Viktor vs Polugaevsky, Lev — 1/2-1/2 — Buenos Aires ARG
1983 — Laube, Reiner vs Markmann, Ulrich — 0-1 — Lemgo
1983 — Schandorff, Lars vs Horvath, Jozsef — 1/2-1/2 — EU-ch U20 Groningen NED
1984 — Murey, Jacob vs Hulak, Krunoslav — 1/2-1/2 — Berlin-West
1988 — M.Roma vs M H Moin — 1-0 — Dator mOete
6…a6 — 10.2% (53 parties)
1955 — Aadhitha Karikalan vs Alsjo, Sigge — 1-0 — Novi Sad SRB
1971 — Ungureanu, Emil vs Garcia Martinez, Silvino — 1-0 — Bucharest ROU
1971 — Guddahl, Viggo vs Sorensen, Dick — 0-1 — Schilde
1979 — Rashkovsky, Nukhim N vs Suetin, Alexey S — 1/2-1/2 — Sochi RUS
1991 — Lahav, Ehud vs Sindik, Ervin — 1/2-1/2 — Tel Aviv ISR