E68k - 9.Rb1 - Fianchetto, Classical (1951)

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E68k — Fianchetto, Classical (1951)
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 Nbd7 7.O-O e5 8.e4 c6 9.Rb1
Les coups candidats
9…a5 — 29.6% (163 parties)
Ambassadeurs : Wojtkiewicz, Aleksander (7x), Szmetan, Jorge (6x), Byrne, Robert E (4x), Litmanowicz, Miroslawa (2x), ? (2x), Bierwisch, Bernhard (2x), Stein, Leonid (2x), Szekely, Peter (2x)
9…Re8 — 21.2% (117 parties)
Ambassadeurs : Eliskases, Erich (3x), Horvath, Jozsef (3x), Wojtkiewicz, Aleksander (3x), O'Kelly de Galway, Alberic (2x), Miguel, Nahuel (2x), Flesch, Janos (2x), Bielicki, Carlos (2x), Medina-Garcia, Antonio (2x)
9…exd4 — 18.7% (103 parties)
Ambassadeurs : Wojtkiewicz, Aleksander (8x), Szmetan, Jorge (6x), Geller, Efim P. (4x), Donner, Jan-Hein (3x), Weindl, Alfred (3x), Thipsay, Praveen M (2x), Szekely, Peter (2x), Filip, Miroslav (2x)
9…a6 — 18.5% (102 parties)
Ambassadeurs : Vadasz, Laszlo (4x), Panno, Oscar (3x), Hazai, Laszlo Dr. (3x), Burridge, Raymond John (3x), Donner, Jan-Hein (2x), Ryc, Ivo (2x), Westerman, Henk (2x), Suetin, Alexey S (2x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 9…a5 9…Re8 9…exd4 9…a6
<1800 16 6% 12% 31% 12%
1800-2200 135 29% 25% 17% 16%
2200-2600 284 33% 19% 21% 17%
2600+ 1 — 100% — —
Évolution par décennie (% des parties)
Décennie N parties 9…a5 9…Re8 9…exd4 9…a6
1950s 6 33% 33% 17% —
1960s 40 22% 25% 12% 28%
1970s 93 29% 14% 10% 37%
1980s 67 31% 18% 16% 24%
1990s 141 28% 23% 25% 13%
2000s 89 33% 28% 22% 6%
2010s 107 29% 20% 20% 16%
2020s 8 50% 12% 12% 12%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
9…a5 29% 50% ▲ +21.0%
9…Re8 20% 12% ▼ -7.1%
9…exd4 20% 12% ▼ -7.1%
9…a6 16% 12% ▼ -3.4%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 1 partie
Kasparov, Garry — 1 partie
Parties historiques
9…a5 — 29.6% (163 parties)
1953 — Bolbochan, Jacobo vs Shocron, Ruben — 1-0 — Buenos Aires ch-ARG
1956 — Navabi, Abdolhossein vs Siladi, Dominik — 0-1 — Moskou olm
1961 — Byrne, Robert E vs Quinones Carrillo, Oscar — 1-0 — Mar del Plata ARG
1961 — Byrne, Robert E vs Aga, Rubin — 1-0 — San Francisco, CA USA
1964 — Garcia, Eder Raimundo vs Pugach, Mario — 1-0 — Buenos Aires ARG
9…Re8 — 21.2% (117 parties)
1957 — Cafferty, Bernard vs Gibbs, Peter Campbell — 1/2-1/2 — Plymouth
1959 — Volovich, Anatoly vs Khasin, Abram — 0-1 — Moscow RUS
1964 — Eliskases, Erich vs Rubinetti, Jorge — 1/2-1/2 — Buenos Aires ARG
1964 — Eliskases, Erich vs Thorsteinsson, Bjorn — 1-0 — Tel Aviv olm
1964 — Bielicki, Carlos vs Letelier Martner, Rene — 1/2-1/2 — Buenos Aires ARG
9…exd4 — 18.7% (103 parties)
1957 — Forintos, Gyozo V vs Liebert, Heinz — 1-0 — Reykjavik ISL
1961 — Bielicki, Carlos vs Garcia R., Luis Ernesto — 1/2-1/2 — Buenos Aires ch-ARG
1962 — Byrne, Robert E vs Kchouk, Bechir — 1-0 — Varna BUL
1962 — Tomson, Alexander vs Freeman, Michael J. — 1-0 — Marianske Lazne
1966 — Filip, Miroslav vs Jansa, Vlastimil — 1-0 — Harrachov
9…a6 — 18.5% (102 parties)
1964 — Garcia, Eder Raimundo vs Medina Garcia, Antonio Angel — 1-0 — Tel Aviv ISR
1966 — Donner, Jan-Hein vs Rapaka Samuel Paul — 1/2-1/2 — Santa Monica, CA USA
1966 — Flesch, János vs Anay Barche — 0-1 — HUN
1966 — Panno, Oscar vs Cassidy, Paul L. — 1-0 — Havana olm
1966 — Donner, Jan-Hein vs Fischer, Robert J — 0-1 — Santa Monica, CA USA