A30p — Symmetrical Hedgehog
1.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7 7.b3
Les coups candidats
Ambassadeurs : Ftacnik, Lubomir (16x), Espig, Lutz (10x), Suba, Mihai (9x), Kekki, Jorma (8x), Smejkal, Jan (7x), Karlsson, Lars 1937 (6x), Gipslis, Aivars (6x), Bischoff, Klaus (6x)
7…d6 — 12.8% (254 parties)
Ambassadeurs : Brodsky, Michail (4x), Stone, Raymond (3x), King, Daniel J (3x), Ribli, Zoltan (2x), Belotti, Bruno (2x), Suba, Mihai (2x), Ftacnik, Lubomir (2x), Vogt, Lothar (2x)
7…d5 — 7.7% (152 parties)
Ambassadeurs : Portisch, Lajos (5x), Smejkal, Jakub (3x), Hort, Vlastimil (3x), Botvinnik, Mikhail (2x), De Firmian, Nick (2x), Darga, Klaus (2x), Smyslov, Vladimir (2x), Ribli, Zoltan (2x)
7…a6 — 2.9% (58 parties)
Ambassadeurs : Ekenberg, Bengt (2x), Szmetan, Jorge (2x), Andersen Zargham, Ellene (1x), Andersen, Erik (1x), Kestler, Hans-Guenther (1x), Raaste, Eero J. (1x), Needleman, Alejandro (1x), Hoffman, Alejandro (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 7…O-O 7…d6 7…d5 7…a6
<1800 21 86% 10%
1800-2200 513 76% 14% 5% 3%
2200-2600 1191 74% 13% 8% 3%
2600+ 48 77% 12% 10%
Évolution par décennie (% des parties)
Décennie N parties 7…O-O 7…d6 7…d5 7…a6
1920s 2 50% 50%
1930s 4 25% 25% 50%
1940s 8 62% 38%
1950s 17 88% 6%
1960s 14 71% 29%
1970s 98 82% 6% 11% 1%
1980s 280 69% 16% 12% 3%
1990s 313 73% 13% 7% 5%
2000s 547 75% 15% 5% 3%
2010s 577 78% 12% 7% 2%
2020s 122 80% 10% 7% 4%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
7…O-O 78% 80% ▲ +1.7%
7…d6 12% 10% ▼ -2.5%
7…d5 7% 7% -0.2%
7…a6 2% 4% ▲ +1.8%
Joueurs célèbres
Champions du monde dans cette position
Kasparov, Garry — 8 parties
Smyslov, Vladimir — 5 parties
Carlsen, Magnus — 4 parties
Botvinnik, Mikhail — 3 parties
Tal, Mikhail — 2 parties
Alekhine, Alexander — 1 partie
Euwe, Max — 1 partie
Karpov, Aleksandr — 1 partie
Hou, Yifan — 1 partie
Parties historiques
7…O-O — 75.3% (1492 parties)
1927 — Nimzowitsch, Aron vs Colle, Edgar — 1/2-1/2 — Bad Niendorf
1930 — Illingworth, Leonard vs Mortlock, Alfred — 1-0 — Hastings ENG
1940 — Goldberg, Grigory A vs Zhukhovitsky, Samuel — 1-0 — Kiev UKR
1946 — Golombek, Harry vs Pachman, Ludek — 1/2-1/2 — Prague CZE
1946 — Zíta, František vs Bondarevsky, Igor — 1/2-1/2 — Moscow-Prague tt
7…d6 — 12.8% (254 parties)
1976 — Spassov, Liuben vs Ornstein, Axel — 1/2-1/2 — Oslo NOR
1978 — Uhlmann, Wolfgang vs Vogt, Lothar — 1/2-1/2 — Halle GER
1978 — Odendahl, Steven vs Weinstein, Norman — 1/2-1/2 — Lone Pine, CA USA
1978 — Biyiasas, Peter vs Rohland, Michael Karl — 1/2-1/2 — Toronto ch-CAN - zt
1978 — Espig, Lutz vs Vogt, Lothar — 1/2-1/2 — Halle GER
7…d5 — 7.7% (152 parties)
1927 — Alekhine, Alexander vs Nimzowitsch, Aron — 1/2-1/2 — New York, NY USA
1937 — Schreiber Pitot, Beryl vs Barcza, Gedeon — 1-0 — Budapest HUN
1946 — Golombek vs Opocensky, Karel — 1-0 — Prague CZE
1949 — Heemsoth, Hermann vs Zemgalis — 0-1 — ?
1949 — Kasparian, Genrikh vs Makogonov, Vladimir — 1/2-1/2 — Tbilisi GEO
7…a6 — 2.9% (58 parties)
1935 — Ekenberg, Bengt vs Andersen Zargham, Ellene — 1-0 — Skane-Kopenhagen
1935 — Ekenberg, Bengt vs Andersen, Erik — 1-0 — Helsingborg
1976 — Kestler, Hans-Guenther vs Raaste, Eero J. — 1/2-1/2 — Haifa ISR
1983 — Needleman, Alejandro vs Hoffman, Alejandro — 1-0 — ch.Juv.ARG.
1983 — Karlsson, Lars 1937 vs Gurevich, Dmitry — 1-0 — Helsinki FIN