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A33k — Symmetrical, Two Knights (1946)
1.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Nc6 6.g3
Les coups candidats
Ambassadeurs : Agrest, Evgenij (18x), Greenfeld, Alon (18x), Korchnoi, Viktor (14x), Adorjan, Andras (12x), Rogulj, Branko (11x), Karpov, Anatoly (10x), Gulko, Boris (10x), Ivanovic, Bozidar (9x)
Ambassadeurs : Hulak, Krunoslav (10x), Parma, Bruno (9x), Sosonko, Gennadi (7x), Polugaevsky, Lev (6x), Smejkal, Jan (6x), Korchnoi, Viktor (5x), Langeweg, Kick (5x), Ivkov, Borislav (5x)
Ambassadeurs : Persitz, Raaphi (2x), Portisch, Lajos (2x), Maric, Alisa (2x), Dickerson, Perry (2x), Toshkov, Tihomir (2x), Bousios, Hristos (2x), Donner, Jan-Hein (2x), Horvath, Imre (2x)
Ambassadeurs : Simic, Radoslav K (2x), Ivanovic, Bozidar (2x), Schmid, Lothar (1x), Weiss, Philippe (1x), Smyslov, Vasily (1x), Cobo Arteaga, Eldis (1x), Csulits, Anton (1x), Postler, Reinhard (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 6…Qb6 6…Bc5 6…Bb4 6…a6
<1800 131 59% 16% 10% 9%
1800-2200 858 57% 12% 11% 7%
2200-2600 1788 71% 14% 8% 3%
2600+ 180 83% 14% 2% 1%
Évolution par décennie (% des parties)
Décennie N parties 6…Qb6 6…Bc5 6…Bb4 6…a6
1950s 17 35% 18% 35% 6%
1960s 28 25% 21% 29% 7%
1970s 205 52% 27% 12% 3%
1980s 365 55% 23% 13% 4%
1990s 562 62% 14% 10% 5%
2000s 704 63% 13% 11% 7%
2010s 1115 73% 10% 7% 3%
2020s 398 72% 11% 7% 2%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
6…Qb6 73% 72% ▼ -1.1%
6…Bc5 10% 11% ▲ +1.1%
6…Bb4 7% 7% -0.2%
6…a6 3% 2% ▼ -1.7%
Joueurs célèbres
Champions du monde dans cette position
Karpov, Anatoly — 10 parties
Kasparov, Garry — 7 parties
Kramnik, Vladimir — 7 parties
Anand, Viswanathan — 6 parties
Tal, Mikhail — 5 parties
Hou, Yifan — 3 parties
Carlsen, Magnus — 3 parties
Smyslov, Vladimir — 1 partie
Ju, Wenjun — 1 partie
Parties historiques
6…Qb6 — 65.2% (2213 parties)
1950 — Foltys, Jan vs Pirc, Vasja — 1/2-1/2 — Amsterdam NED
1950 — Rossolimo, Nicolas vs Milic, Borislav — 1-0 — Paris FRA
1955 — Byrne, David vs Geller, Efim P. — 0-1 — Moscow RUS
1955 — Taimanov, Mark vs Geller, Efim P. — 1-0 — Moscow RUS
1955 — Lein, Anatoly vs Kholmov, Ratmir D — 0-1 — Voroshilovgrad
6…Bc5 — 13.9% (472 parties)
1953 — Furman, Semyon vs Nezhmetdinov, Rashid — 1-0 — Leningrad RUS
1954 — Bisguier, Arthur B vs Petrosian, Tigran V. — 1-0 — New York, NY USA
1955 — Furman, Semyon vs Petrosian, Tigran V. — 1/2-1/2 — Moskou ch-URS
1963 — Kolbak, Jens vs Dinsen, Carl Krarup — 1/2-1/2 — ?
1967 — Smyslov, Vasily vs Matulovic, Milan — 1-0 — Palma de Majorca ESP
6…Bb4 — 9.5% (323 parties)
1952 — Pachman, Ludek vs Kubelka, Jaroslav — 0-1 — sim Prague
1952 — Panno, Oscar vs Amaro, Lucas Ibrair — 1-0 — Buenos Aires ARG
1955 — Stahlberg, Gideon vs Persitz, Raaphi — 1-0 — Ljubljana
1955 — Persitz, Raaphi vs Vidmar, Milan Jr — 0-1 — Ljubljana
1956 — Boutteville, Cesar vs Ivkov, Borislav — 1/2-1/2 — Vichy
6…a6 — 4.4% (148 parties)
1954 — Schmid, Lothar vs Weiss, Philippe — 1-0 — Amsterdam olm
1967 — Smyslov, Vasily vs Cobo Arteaga, Eldis — 1-0 — Havana CUB
1967 — Csulits, Anton vs Postler, Reinhard — 1-0 — Colditz GER
1972 — Muratov, Vladimir A vs Korolev, Adam — 1-0 — Soviet Union
1973 — Liebert, Heinz vs Minev, Nikolay N — 1/2-1/2 — Albena