A76b - 10.Qc2 - Classical, Main Line (1952)

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A76b — Classical, Main Line (1952)
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.Qc2
Les coups candidats
Ambassadeurs : Matulovic, Milan (5x), Cruz, Raul C. (4x), Kluger, Gyula (4x), Janosevic, Dragoljub (4x), Eperjesi, Laszlo Dr. (4x), Portisch, Lajos (4x), Korchnoi, Viktor (3x), Soos, Bela (3x)
10…a6 — 29.8% (191 parties)
Ambassadeurs : Eperjesi, Laszlo Dr. (4x), Abiolla James (2x), Miguel, Nahuel (2x), Ladanyi, Gyula (2x), Ogaard, Leif (1x), Ermenkov, Evgenij (1x), Alster, Ladislav (1x), Fischl, Kamilla (1x)
Ambassadeurs : Donner, Jan-Hein (2x), Moody, David W (2x), Ree, Hans (1x), Keene, Raymond D (1x), Pachman, Ludek (1x), Gasic, Bozidar (1x), Bajec, Ivo (1x), Planinc, David (1x)
10…Nbd7 — 3.7% (24 parties)
Ambassadeurs : Makogonov, Vladimir (2x), Vano, Edward (1x), Kevitz, Alexander (1x), Grusz (1x), Zimpel, Norbert (1x), Harari, Zaki (1x), De Firmian, Nick (1x), Morgulov, Alexsander M (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 10…Na6 10…a6 10…Bg4 10…Nbd7
<1800 48 31% 38% 19% 4%
1800-2200 244 43% 35% 13% 4%
2200-2600 144 54% 25% 16% 2%
Évolution par décennie (% des parties)
Décennie N parties 10…Na6 10…a6 10…Bg4 10…Nbd7
1950s 18 56% 22% 6% 6%
1960s 52 83% 12% 6% —
1970s 73 70% 12% 12% 4%
1980s 51 57% 29% 6% 8%
1990s 82 46% 33% 13% 2%
2000s 165 41% 42% 13% 2%
2010s 178 41% 30% 15% 6%
2020s 22 27% 32% 32% 5%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
10…Na6 41% 27% ▼ -13.7%
10…a6 30% 32% ▲ +2.0%
10…Bg4 15% 32% ▲ +16.6%
10…Nbd7 6% 5% ▼ -1.1%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 2 parties
Parties historiques
10…Na6 — 49.6% (318 parties)
1952 — Cherepkov, Alexander V vs Chaplinsky, Edgar — 0-1 — Riga LAT
1954 — Flohr, Salo vs Sokolsky, Alexey — 1/2-1/2 — Kiev ch-URS
1955 — Ragozin, Viacheslav vs Salov, Vitaly V. — 0-1 — Moscow RUS
1955 — Boleslavsky, Isaac vs Gipslis, Aivars — 1/2-1/2 — URS-ch sf Riga LAT
1958 — Hajtun, Jozsef vs Honfi, Karoly — 0-1 — Budapest HUN
10…a6 — 29.8% (191 parties)
1953 — Averbakh, Yuri L vs Alexander Tadala — 1-0 — Garga
1955 — Alster, Ladislav vs Fischl, Kamilla — 1-0 — ?
1958 — Sanchez, Luis Augusto vs Miguel, Nahuel — 1/2-1/2 — Bogota COL
1959 — Udovcic, Mijo vs Janosevic, Dragoljub — 1/2-1/2 — Kragujevac SRB
1963 — Ha Tan Thanh vs Milic, Bozidar — 1-0 — Beverwijk NED
10…Bg4 — 12.8% (82 parties)
1958 — Kaikamdzozov, Jivko vs Peev, Georgi — 0-1 — Sofia BUL
1966 — Ree, Hans vs Keene, Raymond D — 1/2-1/2 — Havana olm
1966 — Pachman, Ludek vs Gasic, Bozidar — 1-0 — Sarajevo BIH
1969 — Bajec, Ivo vs Planinc, David — 1/2-1/2 — Ljubljana VIDMAR
1970 — Bukic, Enver vs Bak, Istvan — 1/2-1/2 — Kapfenberg etc
10…Nbd7 — 3.7% (24 parties)
1956 — Vano, Edward vs Kevitz, Alexander — 0-1 — New York, NY USA
1975 — Makogonov, Vladimir vs Morgulov, Alexsander M — 1-0 — Baku AZE
1975 — Makogonov, Vladimir vs Sideifzade, Fikret — 1-0 — Baku AZE
1977 — Harari, Zaki vs De Firmian, Nick — 1-0 — USA
1981 — Silva Nazzari, H vs Rivera, Daniel — 0-1 — Montevideo URU