A30s - 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7 7.d4 cxd4 8.Qxd4 O-O - Symmetrical Hedgehog [+0.31]

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A30s — Symmetrical Hedgehog
1.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7 7.d4 cxd4 8.Qxd4 O-O
Eval: [+0.31]
Les coups candidats
9.Rd1 — 66.7% (965 parties)
Ambassadeurs : Andersson, Ulf (10x), Edwards, K. E. D. G.. (8x), Lysyj, Igor (7x), Anastasian, Ashot (5x), Spraggett, Kevin (5x), Moujan, Pablo Miguel (5x), Giardelli, Sergio C. (4x), Giorgadze, Tamaz (4x)
9.e4 — 10.0% (145 parties)
Ambassadeurs : Gligoric, Svetozar (4x), Uhlmann, Wolfgang (4x), Korchnoi, Viktor (3x), Ornstein, Axel (3x), Huebner, Robert (2x), Loginov, Valery A (2x), Temirbayev, Serikbay (2x), Gipslis, Aivars (2x)
9.b3 — 9.5% (138 parties)
Ambassadeurs : Barcza, Gedeon (3x), Andersson, Ulf (2x), Garcia, Luis E. (2x), Cardoso, Cicero Assuncao Jr (2x), Tonndorf, Matthias (2x), Lengyel, Laszlo (1x), Filip, Marius Liviu (1x), Hevizi, Laszlo Dr (1x)
9.Bg5 — 7.1% (102 parties)
Ambassadeurs : Freisler, Pavel (3x), Konopka, Michal (2x), Vlaovic, Djordje (2x), Sorensen, Torben (2x), Pergel, Laszlo (2x), Obolenskikh, Dmitry (2x), Sanchez, Gabriel (1x), Kasa, Richard (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 9.Rd1 9.e4 9.b3 9.Bg5
<1800 9 56% 33% 11% —
1800-2200 308 63% 14% 12% 5%
2200-2600 923 68% 8% 9% 8%
2600+ 70 79% 3% 3% 10%
Évolution par décennie (% des parties)
Décennie N parties 9.Rd1 9.e4 9.b3 9.Bg5
1920s 1 — — — —
1950s 13 85% — 8% —
1960s 21 57% 33% 5% —
1970s 82 62% 20% 11% 1%
1980s 117 63% 12% 15% 7%
1990s 176 66% 12% 11% 6%
2000s 294 64% 10% 13% 7%
2010s 588 70% 7% 6% 9%
2020s 154 66% 11% 9% 6%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
9.Rd1 70% 66% ▼ -4.3%
9.e4 7% 11% ▲ +4.1%
9.b3 6% 9% ▲ +2.6%
9.Bg5 9% 6% ▼ -2.5%
Joueurs célèbres
Champions du monde dans cette position
Kramnik, Vladimir — 6 parties
Karpov, Anatoly — 3 parties
Smyslov, Vladimir — 2 parties
Karpov, Aleksandr — 2 parties
Euwe, Max — 1 partie
Tal, Mikhail — 1 partie
Carlsen, Magnus — 1 partie
Ju, Wenjun — 1 partie
Parties historiques
9.Rd1 — 66.7% (965 parties)
1953 — Petrosian, Tigran V. vs Geller, Efim P. — 1/2-1/2 — Zurich SUI
1953 — Gligoric, Sofija vs Smyslov, Vladimir — 0-1 — Zurich SUI
1954 — Filip, Marius Liviu vs O'Kelly de Galway, Alberic — 1/2-1/2 — Bucharest ROU
1955 — Stahlberg, Gideon vs Pirc, Vasja — 1/2-1/2 — Ljubljana
1958 — Rejfir, Josef vs Milev, Zdravko — 1/2-1/2 — Munich GER
9.e4 — 10.0% (145 parties)
1963 — Book, Eero vs Uusi — 1-0 — Tartu EST-FIN
1964 — Korchnoi, Viktor vs Kholmov, Ratmir D — 0-1 — Moscow RUS
1967 — Kondratiev, Pavel E vs Bokuchava, Alexander — 0-1 — Moscow RUS
1967 — Korchnoi, Viktor vs Gipslis, Aivars — 1-0 — Tallinn zt plof
1967 — Malich, Burkhard, Dr. vs Schoeneberg, Manfred — 1-0 — Zinnowitz GER
9.b3 — 9.5% (138 parties)
1959 — Barcza, Gedeon vs Hevizi, Laszlo Dr — 1-0 — Budapest HUN
1963 — Lengyel, Laszlo vs Filip, Marius Liviu — 1/2-1/2 — Zonal Enschede NED
1971 — Barcza, Gedeon vs Keres, Paul Petrovich — 1/2-1/2 — Tallinn Tallinn EST
1975 — Barcza, Gedeon vs Pritchett, Craig W — 1-0 — Decin CZE
1976 — Garcia, Luis E. vs Panno, Oscar — 1/2-1/2 — Bogota COL
9.Bg5 — 7.1% (102 parties)
1978 — Vadasz, Laszlo vs Fernandez Gonzalez, Juan Alfonso — 1-0 — Budapest HUN
1981 — Sanchez, Gabriel vs Kasa, Richard — 1-0 — Palo Alto
1983 — Schandorff, Lars vs Kristiansen, Jens — 1/2-1/2 — Copenhagen DEN
1987 — Gulko, Boris vs Sherzer, Alex — 1-0 — New York, NY USA
1988 — Konopka, Michal vs Riha, Vaclav — 1-0 — Czechoslovakia