A63f - 10.Nd2 a6 11.a4 - Fianchetto (1954)

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A63f — 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 Nbd7 10.Nd2 a6 11.a4
Les coups candidats
Ambassadeurs : Birnboim, Nathan (6x), Mikhalevski, Victor (6x), Rawlings, Alan J C (6x), Pheby, Ian M (6x), Marovic, Drazen (5x), Franco Ocampos, Zenon (5x), Psakhis, Lev (4x), Hulak, Krunoslav (4x)
11…Rb8 — 19.0% (230 parties)
Ambassadeurs : Kapengut, Albert (4x), Birnboim, Nathan (3x), Hudecek, Jan (3x), Incutto, Carlos (2x), Pachman, Ludek (2x), Donner, Jan-Hein (2x), Wood, Baruch (2x), Khodos, German (2x)
11…Ne8 — 5.0% (60 parties)
Ambassadeurs : Marovic, Drazen (5x), Kovacevic, Aleksandar (3x), Ilincic, Zlatko (3x), Cebalo, Miso (2x), Benko, Pal (2x), Browne, Walter Shawn (2x), Weyerstrass, Ronald (2x), Baart, Joan (2x)
11…Nh5 — 3.6% (44 parties)
Ambassadeurs : De Firmian, Nick (3x), Haast, Anne (3x), Alexopoulos, Georgios 94 (2x), Huber, Gregory (2x), Rodriguez Melian, Jose Luis (2x), Youngworth, Perry (1x), Magrin, Antonio (1x), Zuckerman, Bernard (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 11…Re8 11…Rb8 11…Ne8 11…Nh5
<1800 12 67% 17% — —
1800-2200 260 65% 18% 5% 3%
2200-2600 669 69% 16% 4% 5%
2600+ 16 62% 19% 6% 6%
Évolution par décennie (% des parties)
Décennie N parties 11…Re8 11…Rb8 11…Ne8 11…Nh5
1950s 26 31% 65% 4% —
1960s 34 12% 68% 12% —
1970s 114 61% 21% 10% 4%
1980s 161 68% 17% 6% 5%
1990s 196 61% 21% 6% 3%
2000s 276 70% 16% 4% 4%
2010s 381 74% 13% 3% 4%
2020s 22 55% 27% 9% 5%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
11…Re8 74% 55% ▼ -19.5%
11…Rb8 13% 27% ▲ +14.7%
11…Ne8 3% 9% ▲ +6.2%
11…Nh5 4% 5% ▲ +0.6%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 3 parties
Smyslov, Vladimir — 1 partie
Euwe, Max — 1 partie
Kasparov, Garry — 1 partie
Parties historiques
11…Re8 — 66.0% (798 parties)
1953 — Euwe, Max vs Kotov Lundqvist, Alex — 1-0 — Zurich SUI
1955 — Rossolimo, Nicolas vs Sherwin, James T — 1-0 — Long Beach, CA USA
1955 — Donner, H. vs Bianco Esposito, Antonio — 1-0 — Buenos Aires ARG
1956 — Szabo, Laszlo vs Unzicker, Ferdinand, Dr. — 1-0 — Moscow olm
1956 — Szabo, Ladislav vs Unzicker, Wolfgang — 1-0 — Moscow RUS
11…Rb8 — 19.0% (230 parties)
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
1954 — Donner, Jan-Hein vs Keres, Paul — 0-1 — Hastings ENG
1955 — Urbanec, Karel vs Zaruba, Antonin — 0-1 — Prague CZE
11…Ne8 — 5.0% (60 parties)
1956 — Horowitz, Albert Israel vs Reshevsky, Samuel — 0-1 — New York, NY USA
1963 — Marovic, Drazen vs Udovcic, Mijo — 1/2-1/2 — Zenica ch YUG
1964 — Marovic, Ante vs Udovcic, Tibor — 1/2-1/2 — Yugoslavia
1967 — Marovic, Drazen vs Cebalo, Miso — 1-0 — Yugoslavia
1967 — Marovic, Drazen vs Cebalo, Miso — 1-0 — YUG
11…Nh5 — 3.6% (44 parties)
1970 — Magrin, Antonio vs Zuckerman, Bernard — 0-1 — Bari it Bari ITA
1970 — Marovic, Drazen vs Nicevski, Risto — 1/2-1/2 — Skopje MKD
1978 — Cvitan, Ognjen vs Alexopoulos, Georgios 94 — 0-1 — Baile Herculane
1978 — Trikaliotis, Georgios vs Alexopoulos, Georgios 94 — 1/2-1/2 — Athens ch-GRE sf
1981 — Youngworth, Perry vs De Firmian, Nick — 0-1 — Lone Pine open