E93i - 9…a5 - Petrosian, Main Line (1958)

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E93i — Petrosian, Main Line (1958)
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.d5 Nbd7 8.Bg5 h6 9.Bh4 a5
Les coups candidats
10.Nd2 — 80.9% (436 parties)
Ambassadeurs : Bazan, Osvaldo (3x), Favaro, Edmar F (3x), Mira, Helene (3x), Martin Del Campo Cardenas, Roberto Abel (3x), Ferrari, Cristiano (3x), Siekanska, Maria (3x), Keene, Raymond D (2x), Stein, Leonid (2x)
10.O-O — 13.2% (71 parties)
Ambassadeurs : Ferrari, Cristiano (2x), Gibbs, Peter Campbell (1x), Roos, Michel (1x), Radev, Nikolai (1x), Karastoichev, Emil (1x), Incutto, Carlos (1x), Rubinetti, Jorge (1x), Arkell, Keith C (1x)
10.Qc2 — 1.9% (10 parties)
Ambassadeurs : Denig, Friedrich, Dr. (2x), Mortensen, Erling (1x), Kinlay, Jonathan (1x), Cano Sanchez, Josue (1x), Rodriguez Alamar, Juan Carlos (1x), Roelli, Corinne (1x), Helm, Leonie (1x), Mimbela, L (1x)
10.a4 — 1.3% (7 parties)
Ambassadeurs : Clua Ballague, M. (1x), CHONG JUN YIN (1x), Pandorf, Horst (1x), Buerger, Helmut (1x), Gozzoli, Cyrille (1x), Gozzoli, Yannick (1x), Sarabia Utrilla, Joaquin (1x), Peinador Garcia-Aranda, Dan (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 10.Nd2 10.O-O 10.Qc2 10.a4
<1800 26 69% 27% — 4%
1800-2200 235 77% 17% 3% 1%
2200-2600 185 92% 6% 1% 1%
Évolution par décennie (% des parties)
Décennie N parties 10.Nd2 10.O-O 10.Qc2 10.a4
1950s 8 75% 25% — —
1960s 24 96% 4% — —
1970s 14 86% — 7% —
1980s 30 80% 17% — 3%
1990s 159 85% 9% 2% 1%
2000s 176 76% 16% 2% 2%
2010s 106 76% 18% 2% 2%
2020s 22 95% 5% — —
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
10.Nd2 76% 95% ▲ +19.0%
10.O-O 18% 5% ▼ -13.4%
10.Qc2 2% 0% ▼ -1.9%
10.a4 2% 0% ▼ -1.9%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 1 partie
Parties historiques
10.Nd2 — 80.9% (436 parties)
1958 — Cuellar Gacharna, Miguel vs Ramirez, Hernan — 1-0 — Pereira
1959 — Parak, Frantisek vs Adamek, Miroslav — 0-1 — Trebic
1959 — Tal, Mikhail vs Pietzsch, Wolfgang — 1-0 — Riga LAT
1959 — Bazan, Osvaldo vs Chemes, Luis — 1-0 — Buenos Aires ARG
1959 — Bazan, Osvaldo vs Wexler, Francisco — 0-1 — Buenos Aires ARG
10.O-O — 13.2% (71 parties)
1959 — Gibbs, Peter Campbell vs Roos, Michel — 1-0 — Budapest HUN
1959 — Radev, Nikolai vs Karastoichev, Emil — 1/2-1/2 — Sofia BUL
1962 — Incutto, Carlos vs Rubinetti, Jorge — 1-0 — Buenos Aires ARG
1981 — Almada, Enrique vs Cao, Jai Jie — 0-1 — Artigas
1981 — Itkis, Boris vs Dementiev, Oleg I — 1/2-1/2 — Erevan ARM
10.Qc2 — 1.9% (10 parties)
1976 — Mortensen, Erling vs Kinlay, Jonathan — 1-0 — Winterthur
1993 — Cano Sanchez, Josue vs Rodriguez Alamar, Juan Carlos — 1-0 — ESP
1993 — Mimbela, L vs Inglan, L — 1-0 — AUEQ5 AGRUPACION-J.
1998 — Roelli, Corinne vs Helm, Leonie — 0-1 — Mureck AUT
2001 — Denig, Friedrich, Dr. vs Bramkamp, Rainer — 1/2-1/2 — Recklinghausen GER
10.a4 — 1.3% (7 parties)
1982 — Clua Ballague, M. vs CHONG JUN YIN — 0-1 — Lucerne SUI
1991 — Pandorf, Horst vs Buerger, Helmut — 0-1 — Trier
2001 — Gozzoli, Cyrille vs Gozzoli, Yannick — 0-1 — Toulon FRA
2002 — Seferlis, Georgios vs Panagopoulos, Giorgos — 1/2-1/2 — Patras GRE
2004 — Sarabia Utrilla, Joaquin vs Peinador Garcia-Aranda, Dan — 0-1 — Collado Villalba