A37u - 5…e5 6.O-O d6 - Symmetrical (1957)

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A37u — Symmetrical (1957)
1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e5 6.O-O d6
Les coups candidats
Ambassadeurs : De Firmian, Nick (11x), Gomes, Mary Ann (7x), Wedberg, Tom (6x), Bartel, Mario (6x), Zoltek, Tadeusz (5x), Balduan, Markus (4x), Markowski, Tadeusz (4x), Valdes Romero, Leonardo (4x)
7.a3 — 33.0% (1152 parties)
Ambassadeurs : Ernst, Thomas (11x), Cramling, Pia (9x), Maletin, Pavel (8x), Vadasz, Laszlo (4x), Karlsson, Lars 1937 (4x), Pirs, Jernej (4x), Marten, Gero (4x), Larson, Matthew (4x)
7.Ne1 — 9.4% (327 parties)
Ambassadeurs : Ptacnikova, Lenka (4x), Flumbort, Andras Dr. (3x), Mozes, Zoltan (2x), Dizdarevic, Emir (2x), Mijailovic, Zoran (2x), Uogele, Anicetas (2x), Pantsulaia, Levan (2x), Erdelyi, Tamas Dr (2x)
7.Rb1 — 2.4% (84 parties)
Ambassadeurs : Vujic-Katanic, Branka (2x), Cramling, Pia (2x), Zubarev, Alexander (2x), Szeles, Karoly (1x), Velikov, Petar (1x), Defize, Alain (1x), Delaney, John (1x), Bachmann, Friedhelm (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 7.d3 7.a3 7.Ne1 7.Rb1
<1800 142 71% 15% 2% 2%
1800-2200 1409 59% 25% 8% 3%
2200-2600 1684 41% 42% 12% 2%
2600+ 51 16% 71% 12% —
Évolution par décennie (% des parties)
Décennie N parties 7.d3 7.a3 7.Ne1 7.Rb1
1950s 8 62% 12% — —
1960s 22 55% 32% 5% —
1970s 30 77% 10% — 7%
1980s 103 62% 25% 3% 4%
1990s 380 57% 24% 12% 2%
2000s 829 59% 24% 10% 3%
2010s 1542 46% 39% 9% 2%
2020s 577 45% 39% 10% 2%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
7.d3 46% 45% ▼ -1.4%
7.a3 39% 39% ▼ -0.5%
7.Ne1 9% 10% ▲ +0.7%
7.Rb1 2% 2% +0.1%
Joueurs célèbres
Champions du monde dans cette position
Kramnik, Vladimir — 3 parties
Anand, Viswanathan — 2 parties
Botvinnik, Mikhail — 1 partie
Hou, Yifan — 1 partie
Gukesh D — 1 partie
Parties historiques
7.d3 — 51.0% (1779 parties)
1954 — Zimmermann, Otto vs Trifunovic, Petar — 1/2-1/2 — Zuerich Zurich SUI
1957 — Averbakh, Yuri L vs Bagirov, Vladimir — 1-0 — Sverdlovsk
1957 — Reshko, Aron vs Bastrikov, Georgy — 1-0 — Kiev UKR
1958 — Smyslov, Vasily vs Bobotsov, Milko G — 1-0 — Munich olm prel
1958 — Peterson, Andrejs vs Bastrikov, Georgy — 1-0 — Tashkent UZB
7.a3 — 33.0% (1152 parties)
1958 — Katalymov, Boris vs Bastrikov, Georgy — 1/2-1/2 — Tashkent UZB
1965 — Brzozka, Stefan vs Ujtelky, Maximilián Samuel Rudolf — 1/2-1/2 — Polanica Zdroj POL
1965 — Osnos, Viatcheslav vs Doroshkievich, Vladimir K — 1-0 — Cheboksary
1968 — Ivkov, Borislav vs Kestler, Hans-Guenther — 1-0 — Bamberg GER
1968 — Pribyl, Josef vs Pospisil, Ludvik — 1-0 — Harrachov
7.Ne1 — 9.4% (327 parties)
1968 — Uogele, Anicetas vs Khasin, Abram — 1/2-1/2 — USSR Tch-2 6870
1981 — Pedersen, Erik vs Matulovic, Milan — 1/2-1/2 — Belgrade SRB
1983 — Huebner, Robert vs Van der Wiel, John T.H. — 1-0 — Tilburg NED
1988 — Golod, Vitali vs Kaspi, Alexander — 1/2-1/2 — UKR-ch Kharkov UKR
1990 — Velikov, Petar vs Cramling, Pia — 1-0 — Novi Sad olm
7.Rb1 — 2.4% (84 parties)
1977 — Bachmann, Friedhelm vs Feustel, Bernd — 0-1 — Bern SUI
1979 — Szeles, Karoly vs Velikov, Petar — 0-1 — Zalaegerszeg
1982 — Wirthensohn, Heinz vs Schneider, Lars-Ake — 1/2-1/2 — Luzern olm
1984 — Defize, Alain vs Delaney, John — 1/2-1/2 — Thessaloniki olm
1987 — Vujic-Katanic, Branka vs Nutu-Gajic, Daniela — 0-1 — Jajce