E92p - 7.d5 c5 8.Bg5 - Petrosian (1957)

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E92p — Petrosian (1957)
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.d5 c5 8.Bg5
Les coups candidats
8…h6 — 87.1% (373 parties)
Ambassadeurs : Quinteros, Miguel A. (16x), Panno, Oscar (13x), Ivkov, Borislav (11x), Miguel, Nahuel (9x), Velimirovic, Dragoljub (8x), Geller, Efim P. (6x), Bukic, Enver (6x), Pachman, Ludek (5x)
8…a6 — 4.7% (20 parties)
Ambassadeurs : Bolbochan, Jacobo (1x), Schweber, Samuel (1x), Cooper, John G (1x), Jamieson, Robert M (1x), Cooper, John (1x), Mahdia, Farage (1x), Kozma, Julius (1x), Pedersen, Karl (1x)
8…Nbd7 — 2.6% (11 parties)
Ambassadeurs : Secondi, Alberto (3x), Stiemer, Soenke (1x), Wink, Arne (1x), Riemer, Wolfgang (1x), Alvear, Miller Leandro (1x), Pap, Janos (1x), Galgovics, Andras (1x), Di Salvo, Yamil (1x)
8…Na6 — 2.3% (10 parties)
Ambassadeurs : Petrosian, Tigran A. (1x), Meduna, Eduard (1x), Gheorghiu, Florin (1x), Pavlov, Mircea-Sergiu-Aurelian (1x), Jansson, Borje (1x), Krantz, Kjell (1x), Grassel, Johann (1x), Huber, Josef (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 8…h6 8…a6 8…Nbd7 8…Na6
<1800 18 61% 11% 11% 6%
1800-2200 106 85% 8% 3% 2%
2200-2600 173 92% 2% — 3%
2600+ 4 100% — — —
Évolution par décennie (% des parties)
Décennie N parties 8…h6 8…a6 8…Nbd7 8…Na6
1950s 6 83% 17% — —
1960s 98 97% — — 3%
1970s 56 95% 4% — —
1980s 37 89% 3% 5% —
1990s 61 79% 10% 3% 2%
2000s 87 80% 8% 3% 2%
2010s 78 83% 4% 5% 5%
2020s 5 80% — — —
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
8…h6 83% 80% ▼ -3.3%
8…a6 4% 0% ▼ -3.8%
8…Nbd7 5% 0% ▼ -5.1%
8…Na6 5% 0% ▼ -5.1%
Parties historiques
8…h6 — 87.1% (373 parties)
1957 — Petrosian, Tigran V. vs Nikolaevsky, Yuri V — 1-0 — Kiev UKR
1958 — Sokolov, Vladimir vs Vasiljevic, Milos — 1/2-1/2 — Tuzla
1958 — Portisch, Ferenc vs Bobotsov — 1-0 — Balatonfured
1958 — Portisch, Lajos vs Bobotsov, Milko G — 1-0 — Balantonfured
1959 — Todorova, Paunka vs Zvorykina, Kira — 0-1 — Plovdiv BUL
8…a6 — 4.7% (20 parties)
1959 — Bolbochan, Jacobo vs Schweber, Samuel — 1/2-1/2 — Buenos Aires ARG
1970 — Kozma, Julius vs Pedersen, Karl — 1/2-1/2 — Kapfenberg etc
1974 — Cooper, John G vs Jamieson, Robert M — 1-0 — Nice FRA
1988 — Cooper, John vs Mahdia, Farage — 1-0 — Thessaloniki GRE
1990 — Penttinen, Jarkko vs Makinen, Juha — 1/2-1/2 — Tampere,FIN
8…Nbd7 — 2.6% (11 parties)
1989 — Stiemer, Soenke vs Wink, Arne — 1-0 — Bargteheide
1989 — Riemer, Wolfgang vs Alvear, Miller Leandro — 1-0 — corr WCCF WWO
1995 — Di Salvo, Yamil vs Alvarez, Jorge Horacio — 0-1 — ?
1999 — Pap, Janos vs Galgovics, Andras — 0-1 — Godal mem HUN
2003 — Lewis, Matt vs Zarate, Edilberto — 1-0 — IECC
8…Na6 — 2.3% (10 parties)
1962 — Gheorghiu, Florin vs Pavlov, Mircea-Sergiu-Aurelian — 1-0 — Bucharest ROU
1965 — Jansson, Borje vs Krantz, Kjell — 1-0 — Falkoeping
1968 — Petrosian, Tigran A. vs Meduna, Eduard — 1-0 — Palma de Majorca ESP
1999 — Grassel, Johann vs Huber, Josef — 1-0 — Schwarzach
2002 — Giampa, Alejandro vs Heinecke, Victor — 1-0 — Buenos Aires ARG