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A37y — Symmetrical Variation, Botvinnik System Reversed, with Nf3
1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e5 6.O-O Nge7 7.d3
Les coups candidats
Ambassadeurs : Bobotsov, Milko G (7x), Sorcinelli, Andrea (5x), Polgar, Judit (4x), Jirovsky, Pavel (4x), Sepp, Olav (4x), Hecht, Hans-Joachim (3x), Anay Barche (3x), Hartoch, Robert G (3x)
Ambassadeurs : Rogers, Ian (7x), Martin Gonzalez, Angel (4x), Dimitrijevic, Srdjan (3x), Minasian, Artashes (3x), Maugg, Ludwig (3x), Graf, Alexander (2x), Barlov, Dragan (2x), Vettel, Matthias (2x)
7…a6 — 0.8% (31 parties)
Ambassadeurs : Ksieski, Zbigniew (5x), Chlpik, Martin (5x), Clares Huanca, Danner Saed (2x), D'Amore, Carlo (1x), Ditt, Egon (1x), Kriens, Michael (1x), Bak, Istvan (1x), Fornahl, Gerd (1x)
7…h6 — 0.5% (19 parties)
Ambassadeurs : Martino, Alessandro (1x), Tortarolo, Marco (1x), Stull, Norbert (1x), Knol, Dirk L (1x), Loginov, Valery A (1x), Zimmer, Ralph (1x), Christensen, Niels (1x), Hellmayr, Alois (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 7…O-O 7…d6 7…a6 7…h6
<1800 179 69% 30% 1%
1800-2200 1666 71% 26% 1% 1%
2200-2600 1556 63% 36% 1% 0%
2600+ 15 33% 67%
Évolution par décennie (% des parties)
Décennie N parties 7…O-O 7…d6 7…a6 7…h6
1950s 5 100%
1960s 45 84% 16%
1970s 97 73% 25% 1%
1980s 191 64% 32% 2% 1%
1990s 577 70% 28% 1% 0%
2000s 1071 68% 30% 0% 1%
2010s 1356 67% 31% 1% 1%
2020s 388 62% 36% 2% 0%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
7…O-O 67% 62% ▼ -5.3%
7…d6 31% 36% ▲ +4.8%
7…a6 1% 2% ▲ +1.1%
7…h6 1% 0% -0.3%
Joueurs célèbres
Champions du monde dans cette position
Botvinnik, Mikhail — 2 parties
Karpov, Anatoly — 1 partie
Ju, Wenjun — 1 partie
Ding, Liren — 1 partie
Gukesh D — 1 partie
Parties historiques
7…O-O — 67.5% (2519 parties)
1953 — Griffiths, Derek Francis Kenneth vs Lloyd, Kenneth William — 1-0 — Hastings ENG
1957 — Holm, Sejer vs Petersen, Finn — 0-1 — Odense DEN
1958 — Byvshev, Vasily vs Kholmov, Ratmir D — 0-1 — Tashkent UZB
1958 — Smyslov, Dmitri vs Bobotsov, Milko G — 1-0 — Munich ol
1959 — Jaeger, Walter vs Lehmann, Heinz — 0-1 — FRG-ch Nuerenberg GER
7…d6 — 30.5% (1138 parties)
1960 — Böök, Eero vs Wotulo, Max — 0-1 — Leipzig GER
1961 — Savon, Vladimir vs Polugaevsky, Lev — 0-1 — Baku ch-URS
1966 — Gereben, Erno vs Gaprindashvili, Nona — 0-1 — Beverwijk NED
1968 — Langeweg, Kick vs Kavalek, Lubomir — 0-1 — Amsterdam NED
1968 — Liebert, Heinz vs Barczay, Laszlo — 1/2-1/2 — Debrecen HUN
7…a6 — 0.8% (31 parties)
1983 — D'Amore, Carlo vs Clares Huanca, Danner Saed — 1-0 — Banco di Roma
1985 — Bak, Istvan vs Clares Huanca, Danner Saed — 1/2-1/2 — Budapest HUN
1988 — Ditt, Egon vs Kriens, Michael — 1-0 — GER
1993 — Psakhis, Lev vs Kupreichik, Viktor D — 1/2-1/2 — Leeuwarden open
1996 — Hammes, Frank vs Ksieski, Zbigniew — 1/2-1/2 — Copenhagen DEN
7…h6 — 0.5% (19 parties)
1973 — Stull, Norbert vs Knol, Dirk L — 0-1 — Bad Mondorf
1984 — Martino, Alessandro vs Tortarolo, Marco — 0-1 — ?
1990 — Loginov, Valery A vs Zimmer, Ralph — 1-0 — Kecskemet HUN
1999 — Christensen, Niels vs Hellmayr, Alois — 1-0 — Bad Wiessee GER
2001 — Olivares, Danields vs Guevara Sanchez, Erick Marvin — 1/2-1/2 — Managua NCA