A77e - 10…Nbd7 11.a4 a6 - Classical, Main Line (1954)

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A77e — Classical, Main Line (1954)
1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Be2 O-O 9.O-O Re8 10.Nd2 Nbd7 11.a4 a6
Les coups candidats
Ambassadeurs : Guliev, Sarhan (4x), Hartoch, Robert G (3x), ? (3x), Huss, Andreas (3x), Darga, Klaus (2x), Johannessen, Svein (2x), Purdy, Cecil J S (2x), Petrosian, Tigran V. (2x)
12.f4 — 26.3% (503 parties)
Ambassadeurs : Bakheet Farag (10x), Tregubov, Pavel V. (4x), Eros, Pal (3x), Radev, Nikolai (2x), Moody, David W (2x), Taimanov, Mark (2x), Tal, Mikhail (2x), Yrjola, Jouni (2x)
12.Re1 — 10.9% (209 parties)
Ambassadeurs : Schweda, Roland (3x), Gyimesi, Zoltan (3x), Rossetto, Hector (2x), Rodriguez Cespedes, Amador (2x), Ortega, Lexy (2x), Akesson, Ralf (2x), Malakhatko, Vadim (2x), Sturt, Raven (2x)
Ambassadeurs : Bagirov, Vladimir (4x), Horvath, Peter (4x), Sygulski, Artur (3x), De Boer, Gert-Jan (3x), Lutikov, Anatoly S (3x), Toth, Bela (3x), Pinter, Jozsef (3x), Begovac, Franja (2x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 12.Qc2 12.f4 12.Re1 12.Ra3
<1800 68 41% 21% 9% 6%
1800-2200 707 30% 28% 10% 8%
2200-2600 854 30% 22% 13% 13%
2600+ 20 25% 25% 25% 20%
Évolution par décennie (% des parties)
Décennie N parties 12.Qc2 12.f4 12.Re1 12.Ra3
1950s 12 50% 25% 17% —
1960s 15 20% 40% 13% —
1970s 100 29% 21% 3% 15%
1980s 240 34% 25% 7% 18%
1990s 266 32% 29% 11% 10%
2000s 462 33% 33% 8% 8%
2010s 597 30% 27% 12% 9%
2020s 220 23% 8% 22% 9%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
12.Qc2 30% 23% ▼ -7.3%
12.f4 27% 8% ▼ -19.1%
12.Re1 12% 22% ▲ +9.9%
12.Ra3 9% 9% ▼ -0.7%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 2 parties
Ju, Wenjun — 1 partie
Parties historiques
12.Qc2 — 30.9% (590 parties)
1953 — Petrosian, Tigran V. vs Alexander Tadala — 1/2-1/2 — Garga
1955 — Darga, Klaus vs Fuller, Maxwell L — 1/2-1/2 — Hastings ENG
1955 — Darga, Klaus vs Fuller, John — 1/2-1/2 — Hastings ENG
1955 — Schweber, Samuel vs Johannessen, Svein — 0-1 — Antwerp BEL
1955 — Scheipl, Ralf vs Hantke, Rolf — 1/2-1/2 — Hoechst ch-GER
12.f4 — 26.3% (503 parties)
1954 — Kluger, Gyula vs Kholmov, Ratmir D — 1/2-1/2 — Bucharest ROU
1954 — Furman, Slavomir vs Dommes, Vladimir M — 1-0 — Leningrad RUS
1955 — Maderna, Carlos vs Palermo, Vicente — 1-0 — Buenos Aires ARG
1960 — Radev, Nikolai vs Maedler, Juergen, Dr. — 0-1 — Leningrad RUS
1960 — Weinstein, Raymond vs Radev, Nikolai — 1/2-1/2 — Leningrad RUS
12.Re1 — 10.9% (209 parties)
1955 — Panno, Oscar vs Rossetto, Hector — 0-1 — Buenos Aires ARG
1955 — Guimard, Carlos E vs Rossetto, Hector — 1/2-1/2 — Buenos Aires ARG
1961 — Germek, Milan vs Bertok, Mario Jr. — 1/2-1/2 — Bled SLO
1964 — Sapi, Laszlo vs Hajtun, Jozsef — 1/2-1/2 — Budapest ch-HUN
1971 — Donner, Jan-Hein vs Velimirovic, Dragoljub — 1-0 — Havana CUB
12.Ra3 — 10.2% (195 parties)
1976 — Petrosian, Tigran A. vs Quinteros, Miguel A. — 1-0 — Lone Pine open
1977 — Ohlin, Jan vs Hagstrom, Allan — 1/2-1/2 — corr SWE/K
1977 — Toth, Bela vs Vaganian, Rafael A — 1/2-1/2 — Rome Rome ITA
1977 — Cardon, Helmut vs Supancic, Darko — 0-1 — Eeklo
1978 — Bagirov, Vladimir vs Szabo, Laszlo — 1/2-1/2 — Budapest HUN