A37m - 7.e3 - Symmetrical (1944)

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A37m — Symmetrical (1944)
1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e6 6.O-O Nge7 7.e3
Les coups candidats
7…O-O — 69.3% (955 parties)
Ambassadeurs : Vastrukhin, Oleg (7x), Espig, Lutz (5x), Doda, Zbigniew (4x), Adorjan, Andras (4x), Bukal, Vladimir Jr. (4x), Pfleger, Helmut, Dr. (3x), Parma, Bruno (3x), Lukacs, Peter (3x)
7…Nf5 — 15.1% (208 parties)
Ambassadeurs : Etruk, Rein T (3x), Suetin, Alexey S (3x), Mukhin, Evgeny B (2x), Kholmov, Ratmir D (2x), Timman, Jan H (2x), Borocz, Istvan (2x), Kushnir, Alla (1x), Gaprindashvili, Nona (1x)
7…d5 — 13.9% (192 parties)
Ambassadeurs : Danilovic, Aleksandar (3x), Doda, Zbigniew (2x), Ghitescu, Theodor (2x), Shamkovich, Leonid (2x), Pajeken, Wolfgang (2x), Ostojic, Nikola (2x), Donner, Jan-Hein (1x), Goethals, Fernand (1x)
7…e5 — 0.8% (11 parties)
Ambassadeurs : Andruet, Gilles (2x), Parmentier, Xavier (1x), Thiel, Kuno (1x), Juravliov V.I. (1x), Veinger, Itzhak (1x), Wolff, Heinz (1x), Lenz, Alarich (1x), Manutes, John (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 7…O-O 7…Nf5 7…d5 7…e5
<1800 69 71% 4% 19% 1%
1800-2200 510 73% 12% 13% 1%
2200-2600 646 67% 19% 13% 0%
2600+ 12 83% — 17% —
Évolution par décennie (% des parties)
Décennie N parties 7…O-O 7…Nf5 7…d5 7…e5
1950s 1 — — 100% —
1960s 32 66% 25% 9% —
1970s 99 65% 20% 14% 1%
1980s 103 66% 16% 17% 2%
1990s 217 67% 17% 15% 1%
2000s 296 69% 17% 11% 1%
2010s 477 70% 14% 14% 1%
2020s 154 78% 6% 16% —
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
7…O-O 70% 78% ▲ +8.3%
7…Nf5 14% 6% ▼ -8.6%
7…d5 14% 16% ▲ +1.5%
7…e5 1% 0% ▼ -0.8%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 4 parties
Smyslov, Vladimir — 1 partie
Carlsen, Magnus — 1 partie
Parties historiques
7…O-O — 69.3% (955 parties)
1960 — Hoen, Ragnar Harald vs Raisa, Unto — 1/2-1/2 — Leipzig GER
1965 — Doda, Zbigniew vs Fischer, Robert J — 0-1 — Havana CUB
1965 — Pfleger, Helmut, Dr. vs Van den Berg, Carel B — 1-0 — ?
1965 — Pfleger, Helmut, Dr. vs Van den Berg, Cees — 1-0 — Hamburg etc
1965 — Pfleger, Helmut, Dr. vs Matanovic, Anto — 1/2-1/2 — Hamburg etc
7…Nf5 — 15.1% (208 parties)
1964 — Bannik, Anatolij vs Shamkovich, Leonid — 0-1 — Kiev ch-URS
1966 — Golombek, Harry vs Schmid, Lothar — 1/2-1/2 — Venice ITA
1966 — Etruk, Rein T vs Polugaevsky, Lev — 1/2-1/2 — Moscow Tch-SU
1967 — Etruk, Rein T vs Mukhin, Evgeny B — 0-1 — Moscow RUS
1967 — Kushnir, Alla vs Gaprindashvili, Nona — 0-1 — Olympiad URS, Moscow RUS
7…d5 — 13.9% (192 parties)
1951 — Alexandrescu, Gheorghe vs Reicher, Emanoil-George — 1/2-1/2 — Bucharest ROU
1963 — Zakharov, Igor vs Shamkovich, Leonid — 1/2-1/2 — Moscow RUS
1965 — Doda, Zbigniew vs Donner, Jan-Hein — 1/2-1/2 — Havana CUB
1965 — Goethals, Fernand vs Rabassa, Luis — 1/2-1/2 — ?
1971 — Doda, Zbigniew vs Espig, Lutz — 1/2-1/2 — Polanica Zdroj POL
7…e5 — 0.8% (11 parties)
1973 — Juravliov V.I. vs Veinger, Itzhak — 1/2-1/2 — Ch USSR Corr (Team)
1986 — Thiel, Kuno vs Andruet, Gilles — 1-0 — Wuppertal II
1988 — Parmentier, Xavier vs Andruet, Gilles — 1-0 — Le Touquet op
1991 — Wolff, Heinz vs Lenz, Alarich — 1/2-1/2 — Hauenstein
1999 — Manutes, John vs Bell Brian — 1-0 — IECG