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A34a — Symmetrical 3 Knights Queenswap
1.c4 c5 2.Nc3 Nf6 3.Nf3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.dxc3 Qxd1+ 7.Kxd1
Eval: [+0.25]
Les coups candidats
7…O-O — 66.9% (4889 parties)
Ambassadeurs : Lombart, Philippe (20x), Farago, Ivan (17x), Daurelle, Herve (14x), Madeira, Wagner Martins (11x), Sarosy, Zoltan L (9x), Kerr, Stephen G.R. (9x), Lupulescu, Constantin (9x), Spassov, Liuben (8x)
7…d3 — 18.0% (1315 parties)
Ambassadeurs : Gheorghiu, Florin (10x), Polugaevsky, Lev (6x), Linqvist, Grels (6x), Kulon, Klaudia (5x), Granda Zuniga, Julio E (5x), Timofeev, Artyom (5x), Lengyel, Levente (4x), Ljubojevic, Ljubomir (4x)
7…a3 — 7.2% (528 parties)
Ambassadeurs : Espig, Lutz (20x), Vaganian, Rafael A (5x), Titz, Heimo (4x), Korchnoi, Viktor (4x), Moehring, Guenther (4x), Adamski, Jan (4x), Plachetka, Jan (4x), Wang, Yue (4x)
7…Qa4 — 5.7% (418 parties)
Ambassadeurs : Uhlmann, Wolfgang (13x), Suba, Mihai (7x), Romanishin, Oleg M (7x), Andersson, Ulf (6x), Vadasz, Laszlo (5x), Robatsch, Karl (4x), Wojtkiewicz, Aleksander (4x), Witkowski, Stefan (3x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 7…O-O 7…d3 7…a3 7…Qa4
<1800 139 78% 17% 2% 2%
1800-2200 2469 74% 17% 4% 3%
2200-2600 3380 63% 18% 10% 7%
2600+ 186 41% 26% 26% 6%
Évolution par décennie (% des parties)
Décennie N parties 7…O-O 7…d3 7…a3 7…Qa4
1930s 12 58% 17% 8%
1940s 19 89% 5% 5%
1950s 81 52% 30% 1% 6%
1960s 71 76% 13% 1% 6%
1970s 275 42% 27% 5% 23%
1980s 510 61% 19% 9% 10%
1990s 1403 65% 19% 5% 9%
2000s 1836 71% 17% 5% 5%
2010s 2408 72% 17% 6% 3%
2020s 692 57% 17% 22% 2%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
7…O-O 72% 57% ▼ -15.0%
7…d3 17% 17% ▼ -0.6%
7…a3 6% 22% ▲ +16.2%
7…Qa4 3% 2% ▼ -0.9%
Joueurs célèbres
Champions du monde dans cette position
Smyslov, Vladimir — 4 parties
Tal, Mikhail — 4 parties
Botvinnik, Mikhail — 3 parties
Karpov, Aleksandr — 3 parties
Ding, Liren — 3 parties
Kasparov, Garry — 2 parties
Kramnik, Vladimir — 2 parties
Carlsen, Magnus — 2 parties
Gukesh D — 2 parties
Anand, Viswanathan — 1 partie
Ju, Wenjun — 1 partie
Parties historiques
7…O-O — 66.9% (4889 parties)
1931 — Kirillov, Vladimir vs Botvinnik, Mikhail — 0-1 — Moskou ch-URS
1932 — Blechschmidt, Paul vs Hahn, Eduard — 1/2-1/2 — Bad Ems GER
1934 — Wackers, Frans Lambert vs Van den Bosch, Johannes — 0-1 — NED
1934 — Lisitsin, Georgy vs Yudovich, Mikhail M — 1-0 — Leningrad ch-URS
1937 — Klausen, Viggo vs Enevoldsen, Jens — 1-0 — Odense DEN
7…d3 — 18.0% (1315 parties)
1938 — Weil, Wolfgang vs Rellstab, Ludwig — 0-1 — Bad Elster
1938 — Shamaev, Leonid vs Freiman, Sergey Nikolaevich — 1-0 — Kiev UKR
1946 — Luckis, Marcos vs Michel, Pascal — 1/2-1/2 — Mar del Plata ARG
1951 — Berg Laachiri, Susanna vs Tal, Mikhail — 0-1 — It Riga LAT
1951 — Stoltz, Gabriel vs Balanel, Ion — 1-0 — Zonal Marianske Lazne (Czech
7…a3 — 7.2% (528 parties)
1950 — Stahlberg, Gideon vs Szabo, Laszlo — 1/2-1/2 — Budapest HUN
1968 — Van der Vliet, Fred vs Vink, Mark — 1-0 — The Hague NED
1972 — Langeweg, Kick vs Korchnoi, Viktor — 0-1 — Amsterdam NED
1972 — Polugaevsky, L. vs Kortchnoi, V. — 1/2-1/2 — Amsterdam NED
1972 — Langeweg, Kick vs Korchnoi, Viktor — 0-1 — Amsterdam NED
7…Qa4 — 5.7% (418 parties)
1937 — Pleci, Isaias vs Ojanen, Jyrki — 1-0 — Stockholm SWE
1949 — Cherepkov, Alexander V vs Liublinsky, Victor — 0-1 — Moscow RUS
1954 — Kortschnoi vs Flohr, Dennis — 1-0 — ?
1954 — Korchnoi, Viktor vs Flohr, Salo — 1-0 — Kiev ch-URS
1956 — Dunkelblum, Arthur vs Thibaut, Georges — 1/2-1/2 — Blankenberge