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A70b — Classical (1939)
1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 a6 8.a4
Les coups candidats
Ambassadeurs : Daurelle, Herve (20x), Kovacevic, Slobodan (15x), Cebalo, Miso (14x), De Firmian, Nick (13x), Antonio, Rogelio Jr (13x), Psakhis, Lev (11x), Spraggett, Kevin (10x), Emms, John M (9x)
8…Bg7 — 16.7% (312 parties)
Ambassadeurs : Koch, Berthold (2x), Filipowicz, Andrzej (2x), Stahlberg, Gideon (2x), Fedorowicz, John (2x), Spassov, Liuben (2x), Kristensen, Bjarke Hautop (2x), Ivanchuk, Vasyl (2x), Tisdall, Jonathan D (2x)
8…Nbd7 — 0.4% (7 parties)
Ambassadeurs : Kottnauer, Cenek (1x), Rajan, HV. (1x), Mauquoy, Alain (1x), Van Theemsche, Achim (1x), Latzke, Boris (1x), Kepp, Eduard (1x), Henrichsen, Jens (1x), Dalso, Harry (1x)
8…Qe7 — 0.2% (4 parties)
Ambassadeurs : Orso, Miklos (1x), Gochev, Mladen (1x), Galliamova, Alisa (1x), Prudnikova, Svetlana (1x), Pantev, Veselin (1x), Cheparinov, Nedelcho (1x), Anreiter, Alois (1x), Hanen, Bernard (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 8…Bg4 8…Bg7 8…Nbd7 8…Qe7
<1800 65 78% 22%
1800-2200 723 78% 21% 0%
2200-2600 897 90% 9% 0% 0%
2600+ 15 87% 13%
Évolution par décennie (% des parties)
Décennie N parties 8…Bg4 8…Bg7 8…Nbd7 8…Qe7
1950s 6 17% 83%
1960s 28 36% 61% 4%
1970s 16 38% 62%
1980s 63 41% 57% 2%
1990s 301 88% 11% 1% 0%
2000s 660 87% 13% 0% 0%
2010s 609 82% 18% 0%
2020s 181 90% 10%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
8…Bg4 82% 90% ▲ +8.0%
8…Bg7 18% 10% ▼ -7.8%
8…Nbd7 0% 0% -0.2%
8…Qe7 0% 0% +0.0%
Joueurs célèbres
Champions du monde dans cette position
Hou, Yifan — 5 parties
Tal, Mikhail — 1 partie
Karpov, Anatoly — 1 partie
Parties historiques
8…Bg4 — 82.7% (1541 parties)
1957 — Byrne, David vs Rapaka Samuel Paul — 1-0 — New York, NY USA
1960 — Wexler, Bernardo vs Bronstein, David I — 0-1 — Mar del Plata ARG
1960 — Wexler, Bernardo vs Bronstein, David I — 0-1 — Mar del Plata ARG
1960 — Barden, Leonard vs Abiolla James — 1-0 — Leicester
1961 — Vesely, Jiri vs Kavalek, Lubomir — 1-0 — Kosice
8…Bg7 — 16.7% (312 parties)
1954 — Stahlberg, Gideon vs Kluger, Gyula — 1/2-1/2 — Praag zt
1955 — Zalys, Ignas vs Schain, GB. — 1/2-1/2 — Long Beach US Open
1956 — Bakos, Eduard vs Berliner, Hans — 1-0 — Montreal CAN
1956 — Evans, Larry vs Lombardy, William J — 1-0 — New York, NY USA
1957 — Veltmander, I.G vs BADERIN, Victoria Adeayo — 0-1 — USSR ch-04 5760
8…Nbd7 — 0.4% (7 parties)
1968 — Kottnauer, Cenek vs Rajan, HV. — 1-0 — London ENG
1997 — Latzke, Boris vs Kepp, Eduard — 1-0 — Schwaebisch Gmuend
1998 — Mauquoy, Alain vs Van Theemsche, Achim — 1-0 — Antwerp BEL
2000 — Nguyen, T Mai Quyen vs Pham T Hong Nhung — 1-0 — ?
2001 — Chen, Yanxi Lolly vs Hulse, David — 1-0 — ?
8…Qe7 — 0.2% (4 parties)
1987 — Orso, Miklos vs Gochev, Mladen — 0-1 — Eger
1995 — Galliamova, Alisa vs Prudnikova, Svetlana — 1-0 — Rostov on Don wmn
2004 — Pantev, Veselin vs Cheparinov, Nedelcho — 1/2-1/2 — Plovdiv BUL
2004 — Anreiter, Alois vs Hanen, Bernard — 1-0 — ICCF