A63c - 10.a4 Nbd7 - Fianchetto (1940)

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A63c — Fianchetto
1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.Nf3 g6 7.g3 Bg7 8.Bg2 O-O 9.O-O a6 10.a4 Nbd7
Les coups candidats
Ambassadeurs : Marovic, Drazen (12x), Birnboim, Nathan (12x), Ilincic, Zlatko (12x), Cebalo, Miso (10x), Kunsztowicz, Uwe (6x), Mikhalevski, Victor (6x), Rawlings, Alan J C (6x), Pheby, Ian M (6x)
11.Bf4 — 36.7% (879 parties)
Ambassadeurs : Drasko, Milan (15x), Gleizerov, Evgeny (14x), Daurelle, Herve (11x), Nikolic, Predrag (9x), Kachiani-Gersinska, Ketino (8x), Hausner, Ivan (8x), Cebalo, Miso (7x), Campbell, Eoin S. (6x)
11.h3 — 10.6% (253 parties)
Ambassadeurs : Ermenkov, Evgenij (3x), Moran Nuque, Bernardo (2x), Razuvaev, Yuri S (2x), Alburt, Lev (2x), Olafsson, Helgi (2x), Magerramov, Elmar (2x), Ree, Hans (2x), Donner, Jan-Hein (2x)
11.e4 — 4.6% (110 parties)
Ambassadeurs : Ligterink, Gert (8x), Sosonko, Gennadi (3x), Franco Ocampos, Zenon (3x), Behrensen, Jorge (2x), Najdorf, Miguel (2x), Short, Nigel D (2x), Winants, Luc (2x), Pergericht, Daniel (2x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 11.Nd2 11.Bf4 11.h3 11.e4
<1800 21 48% 33% 5% 5%
1800-2200 578 40% 38% 10% 6%
2200-2600 1435 43% 39% 12% 4%
2600+ 37 41% 43% 5% —
Évolution par décennie (% des parties)
Décennie N parties 11.Nd2 11.Bf4 11.h3 11.e4
1940s 2 — 50% 50% —
1950s 24 67% 25% — —
1960s 33 73% 9% 3% 9%
1970s 121 83% 7% 6% 1%
1980s 239 51% 24% 11% 9%
1990s 372 45% 32% 11% 6%
2000s 572 43% 36% 12% 5%
2010s 913 39% 43% 11% 3%
2020s 120 16% 67% 7% 3%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
11.Nd2 39% 16% ▼ -23.0%
11.Bf4 43% 67% ▲ +23.4%
11.h3 11% 7% ▼ -4.4%
11.e4 3% 3% +0.3%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 4 parties
Smyslov, Vladimir — 2 parties
Ju, Wenjun — 2 parties
Euwe, Max — 1 partie
Kasparov, Garry — 1 partie
Hou, Yifan — 1 partie
Gukesh D — 1 partie
Parties historiques
11.Nd2 — 43.7% (1048 parties)
1953 — Euwe, Max vs Kotov Lundqvist, Alex — 1-0 — Zurich SUI
1954 — Smyslov, Vladimir vs Pachman, Ludek — 1/2-1/2 — Amsterdam NED
1954 — Donner, Jan-Hein vs Filip, Miroslav — 0-1 — Amsterdam olm
1954 — Smyslov, Vasily vs Pachman, Ludek — 1/2-1/2 — Olympiad, Amsterdam NED
1955 — Rossolimo, Nicolas vs Sherwin, James T — 1-0 — Long Beach, CA USA
11.Bf4 — 36.7% (879 parties)
1949 — Benderev, Yurij vs Zvetkov, Aleksandar — 1/2-1/2 — Sofia BUL
1955 — Wexler, Bernardo vs Pachman, Ludek — 0-1 — Mar del Plata ARG
1955 — Turner, Abe J vs Saidy, Anthony — 0-1 — Long Beach, CA USA
1958 — Olivera, Alfredo vs Letelier Martner, Rene — 0-1 — Mar del Plata ARG
1959 — Bernstein, Sidney vs Reshevsky, Samuel — 0-1 — New York, NY USA
11.h3 — 10.6% (253 parties)
1940 — Zhukhovitsky, Samuel vs Alatortsev, Vladimir N. — 1-0 — Kiev UKR
1960 — Abrahams, Gerald vs Hindle, Owen Mark — 1/2-1/2 — Leicester
1970 — Acosta Hernandez, Raul vs Holm Pileborg, Sven — 0-1 — Siegen GER
1972 — Artiunov, Kirkor vs Ermenkov, Evgenij — 0-1 — Sofia BUL
1972 — Ivkov, Borislav vs Ree, Hans — 1/2-1/2 — Wijk aan Zee NED
11.e4 — 4.6% (110 parties)
1964 — Mello, Jose Benicio vs Alves, Francisco H B Severino — 0-1 — Brasilia BRA
1964 — Behrensen, Jorge vs Najdorf, Miguel — 1/2-1/2 — Buenos Aires ch-AR (
1964 — Behrensen, Jorge vs Najdorf, Miguel — 1/2-1/2 — Buenos Aires ARG
1977 — Sosonko, Gennadi vs Ligterink, Gert — 1-0 — Wijk aan Zee NED
1981 — Ligterink, Gert vs Van der Poel, Henk — 1/2-1/2 — Utrecht tt