A38o — Symmetrical, Main Line (1955)
1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d3 d6 8.Rb1
Les coups candidats
8…Rb8 — 27.1% (273 parties)
Ambassadeurs : Navarovszky, Laszlo (3x), Farago, Sandor (3x), Aadhav Saravanan Kanchi (2x), Stein, Leonid (2x), Weltz, Margit (2x), Campelli, Cris (2x), Anay Barche (1x), Ignatiev, Felix N (1x)
8…Bd7 — 26.5% (267 parties)
Ambassadeurs : Domnitz, Zadok (2x), Staller, Peter (2x), Wagner, Frank (2x), Vrsalovic Acuna. Stjepan Antonio (2x), Moreno Cardenas, Joseph Thomas (2x), Johannes Johannes (1x), Hutchinson, Paul A (1x), Redolfi, Argentino Rodolfo (1x)
8…a6 — 12.0% (121 parties)
Ambassadeurs : Gurieli, Nino (2x), Perez, Eneida (1x), Powell, Melanie (1x), Choon Foo, LC. (1x), Sursock, Sameer (1x), Haritakis, Theodoros (1x), Stavrakakis, Vasilios (1x), Eidelson, Rakhil (1x)
8…Bg4 — 8.3% (84 parties)
Ambassadeurs : Eising, Johannes (1x), Koch, Berthold (1x), Joyner, Lionel (1x), Anderson, Frank Ross (1x), Dornieden, Manfred, Dr. (1x), Webb, Simon (1x), Pihlgren, Gunnar (1x), Aijala, Jouko (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 8…Rb8 8…Bd7 8…a6 8…Bg4
<1800 125 18% 26% 14% 10%
1800-2200 500 27% 29% 11% 9%
2200-2600 202 32% 23% 14% 5%
2600+ 1 100% — — —
Évolution par décennie (% des parties)
Décennie N parties 8…Rb8 8…Bd7 8…a6 8…Bg4
1950s 8 12% — — 25%
1960s 28 57% 29% — 7%
1970s 25 28% 24% 8% 4%
1980s 38 29% 45% 18% 3%
1990s 198 23% 24% 12% 12%
2000s 244 28% 25% 13% 8%
2010s 388 25% 28% 12% 8%
2020s 80 35% 21% 12% 4%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
8…Rb8 25% 35% ▲ +10.3%
8…Bd7 28% 21% ▼ -7.1%
8…a6 12% 12% +0.1%
8…Bg4 8% 4% ▼ -4.2%
Joueurs célèbres
Champions du monde dans cette position
Carlsen, Magnus — 2 parties
Parties historiques
8…Rb8 — 27.1% (273 parties)
1957 — Ivanov, Pavlin Nikolay vs Orev, Petar — 0-1 — Sofia BUL
1960 — Naranja, Renato vs Aadhav Saravanan Kanchi — 1/2-1/2 — Leipzig GER
1960 — Wexler, Bernardo vs Germann, Leo — 1/2-1/2 — ?
1961 — Hanken, Jerome B vs Syvertsen, Rolf Erik — 1-0 — So San Gabriel, CA
1962 — Anay Barche vs Ignatiev, Felix N — 1/2-1/2 — Moscow RUS
8…Bd7 — 26.5% (267 parties)
1965 — Anay Barche vs Parma, Bruno — 1/2-1/2 — Hamburg etc
1966 — Navarovszky, Laszlo vs Foldi, Jozsef — 1/2-1/2 — Budapest ch-HUN
1966 — Maltsev, Aleksander vs Kaikamdzozov, Jivko — 0-1 — ?
1967 — Johannes Johannes vs Hutchinson, Paul A — 1-0 — Oxford ch-BCF U18
1967 — Redolfi, Argentino Rodolfo vs Badiola De Miguel, Carlos — 1-0 — Cordoba ARG
8…a6 — 12.0% (121 parties)
1972 — Choon Foo, LC. vs Sursock, Sameer — 0-1 — Skopje MKD
1976 — Azadharf, Farrokh vs Dunne, David — 1/2-1/2 — Groningen NED
1985 — Enevoldsen, Svend vs Hansen, Berno — 1-0 — ?
1986 — Lorscheid, Gerhard vs Roos, Thomas — 1/2-1/2 — RLPF-ch Speyer
1988 — Perez, Eneida vs Powell, Melanie — 1-0 — Thessaloniki GRE
8…Bg4 — 8.3% (84 parties)
1955 — Eising, Johannes vs Koch, Berthold — 1/2-1/2 — Zwickau
1959 — Joyner, Lionel vs Anderson, Frank Ross — 1/2-1/2 — Montreal CAN
1964 — Pihlgren, Gunnar vs Aijala, Jouko — 1-0 — Krakow POL
1968 — Dornieden, Manfred, Dr. vs Webb, Simon — 0-1 — Erlangen
1978 — Glibstrup, Michael vs Reinert, Mads — 0-1 — dkch-jr Ribe