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A38p — Symmetrical, Main Line (1920)
1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d3 d6 8.Bd2
Les coups candidats
8…Bd7 — 32.7% (264 parties)
Ambassadeurs : Seres, Lajos (6x), Bak, Istvan (5x), Vautrin, Stefan (3x), Mariotti, Sergio (2x), Ambroz, Jan (2x), Antic, Dejan (2x), Portisch, Lajos (1x), Albano, Marco (1x)
8…Rb8 — 19.2% (155 parties)
Ambassadeurs : Fasciglione, Bernardino (2x), Sanguinetti, Edoardo (1x), Behrensen, Jorge (1x), Arnstam, Knut (1x), Asik, Hakan (1x), Lombardy (1x), Evans, Larry (1x), Stoliar, Efim Samoilovich (1x)
8…a6 — 15.2% (123 parties)
Ambassadeurs : Flesch, Janos (2x), Yepez, Olavo (2x), Geller, Adam (1x), Geller, Alexander (1x), Garcia, Alfredo NA (1x), Muehlberg, Siegfried (1x), Ujtelky, Maximilián Samuel Rudolf (1x), Roux Cabral, Luis (1x)
8…Bg4 — 9.7% (78 parties)
Ambassadeurs : Zilber, Israel (1x), Zdanovs, Igors (1x), Cafferty, Bernard (1x), Alles, C (1x), Rubio Purrinos, Hugo (1x), Hernandez Onna, Roman (1x), Kosny, Marek (1x), Koziarski, Andrzej (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 8…Bd7 8…Rb8 8…a6 8…Bg4
<1800 111 31% 17% 22% 5%
1800-2200 366 30% 22% 13% 13%
2200-2600 130 44% 17% 13% 4%
2600+ 2 — — 50% —
Évolution par décennie (% des parties)
Décennie N parties 8…Bd7 8…Rb8 8…a6 8…Bg4
1950s 15 27% 27% 7% —
1960s 28 29% 14% 18% 7%
1970s 22 41% 23% 5% 5%
1980s 30 37% 13% 17% 3%
1990s 156 35% 18% 12% 13%
2000s 253 31% 22% 14% 13%
2010s 257 33% 18% 19% 7%
2020s 47 30% 19% 17% 2%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
8…Bd7 33% 30% ▼ -3.3%
8…Rb8 18% 19% ▲ +1.3%
8…a6 19% 17% ▼ -1.7%
8…Bg4 7% 2% ▼ -5.3%
Parties historiques
8…Bd7 — 32.7% (264 parties)
1955 — Sandor, Bela vs Bak, Istvan — 1/2-1/2 — Hungary ch
1957 — Pilnik, Herman vs Palsson, Jon Gunnar — 1-0 — ?
1958 — Portisch, Lajos vs Bak, Istvan — 1/2-1/2 — Budapest HUN
1958 — Bak, Istvan vs Honfi, Karoly — 1/2-1/2 — HUN-ch Budapest HUN
1962 — Filipov, Filip vs Prakhov, Valentin Asenov — 0-1 — Sofia BUL
8…Rb8 — 19.2% (155 parties)
1955 — Grosek, Branko vs Bertok, Mario Jr. — 1/2-1/2 — Ljubljana
1956 — Sanguinetti, Edoardo vs Behrensen, Jorge — 1/2-1/2 — Mar del Plata ARG
1956 — Lombardy vs Evans, Larry — 1/2-1/2 — Metropolitan League
1956 — Stoliar, Efim Samoilovich vs Kotkov, Yuri M — 0-1 — Kislovodsk
1962 — Ariba Desmond Luke vs Tiemann, Christoph — 0-1 — WT/M/945
8…a6 — 15.2% (123 parties)
1957 — Muehlberg, Siegfried vs Ujtelky, Maximilián Samuel Rudolf — 1-0 — Dresden GER
1961 — Udovcic, Mijo vs Parma, Bruno — 0-1 — Bled SLO
1962 — Flesch, Janos vs Geller, Adam — 1-0 — Leningrad RUS
1962 — Flesch, Janos vs Geller, Alexander — 1-0 — Leningrad RUS
1962 — Yepez, Olavo vs Garcia, Alfredo NA — 1-0 — Pichincha
8…Bg4 — 9.7% (78 parties)
1961 — Cafferty, Bernard vs Alles, C — 1-0 — Hastings ENG
1963 — Zilber, Israel vs Zdanovs, Igors — 1-0 — Riga LAT
1978 — Kosny, Marek vs Koziarski, Andrzej — 0-1 — Warsaw POL
1988 — Rubio Purrinos, Hugo vs Hernandez Onna, Roman — 0-1 — Corte Ingles
1992 — Schmitz, Christopher vs Noll, Sonja — 0-1 — GER