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B25a — Closed (1903)
1.e4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6
Les coups candidats
Ambassadeurs : Parkanyi, Attila (93x), Welz, Peter, Dr. (73x), Bartsch, Berthold (71x), Letay, Gyula (57x), Krapivin, Alexander (55x), Ramik, Zdenek (45x), Jurkovic, Hrvoje (32x), Coimbra, Margarida (32x)
Ambassadeurs : Starostits, Ilmars (81x), Bohak, Janko (73x), Rogulj, Branko (61x), Bastian, Herbert (52x), Detela, Walter (38x), Donev, Ivo (34x), Buecker, Stefan (33x), Barkwell, Michael C (30x)
Ambassadeurs : Tompa, Janos (29x), Contreras Huaman, Fiorella (17x), Rozsa, Sandor (13x), Spassky, Boris Vasily (11x), Hoen, Ragnar Harald (10x), Ruefenacht, Matthias (10x), Preziuso, Toni (10x), Whitehead, Mark A (10x)
6.Nh3 — 3.4% (1154 parties)
Ambassadeurs : Frick, Christoph (63x), Bulgarini Torre, Marco (52x), Piersig, Klaus (42x), Pedersen, Svend (18x), Day, Lawrence A. (17x), Uricar, Jakub (16x), Sergeev, Vladimir (15x), Berry, Jonathan (13x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 6.Be3 6.f4 6.Nge2 6.Nh3
<1800 1889 47% 36% 11% 3%
1800-2200 16411 51% 34% 10% 3%
2200-2600 10837 46% 39% 8% 5%
2600+ 98 46% 24% 20% 6%
Évolution par décennie (% des parties)
Décennie N parties 6.Be3 6.f4 6.Nge2 6.Nh3
1950s 237 51% 13% 35% —
1960s 602 30% 40% 20% 4%
1970s 946 28% 48% 8% 13%
1980s 1946 37% 46% 9% 5%
1990s 7490 46% 40% 8% 3%
2000s 11785 51% 36% 8% 2%
2010s 8839 50% 32% 11% 4%
2020s 2273 52% 27% 15% 3%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
6.Be3 50% 52% ▲ +1.7%
6.f4 32% 27% ▼ -5.4%
6.Nge2 11% 15% ▲ +4.1%
6.Nh3 4% 3% -0.2%
Joueurs célèbres
Champions du monde dans cette position
Karpov, Anatoly — 10 parties
Tal, Mikhail — 5 parties
Kramnik, Vladimir — 5 parties
Botvinnik, Mikhail — 4 parties
Smyslov, Vladimir — 4 parties
Kasparov, Garry — 4 parties
Carlsen, Magnus — 3 parties
Anand, Viswanathan — 2 parties
Ding, Liren — 2 parties
Karpov, Aleksandr — 1 partie
Ju, Wenjun — 1 partie
Gukesh D — 1 partie
Parties historiques
6.Be3 — 47.8% (16304 parties)
1950 — Bykova, Elizaveta vs Mora, Maria Teresa — 1/2-1/2 — Moscow RUS
1950 — Christoph, Manfred, Dr. vs Latzel, Gerhard — 1-0 — Detmold
1951 — Smyslov, Vasily vs Geller, Efim P. — 1-0 — Moskou ch-URS
1951 — Heidenfeld, Wolfgang vs Abalos, Fredie — 0-1 — Marianske Lazne - Praha
1951 — Orbaan, Constant vs Pilnik, Herman — 1-0 — Coruna
6.f4 — 36.1% (12324 parties)
1950 — Henneberger, Walter vs Leepin, Peter — 0-1 — Lucerne SUI
1950 — Naidenov, Nikola vs Neikirkh, Oleg — 1/2-1/2 — Sofia BUL
1951 — Neikirkh, Oleg vs Ciejka, Tadeusz — 0-1 — Sopot
1952 — Karastoichev, Emil vs Filipov, Filip — 1/2-1/2 — Sofia BUL
1953 — Koch, Berthold vs Fuchs, Reinhart — 1/2-1/2 — Berlin East
6.Nge2 — 9.7% (3300 parties)
1950 — Kauder, Hartmut vs Mueller, Claus — 1/2-1/2 — Soemmerda ch GDR
1950 — Kauder, Hartmut vs Elstner, Rudolf — 1-0 — Soemmerda ch GDR
1950 — Makarov, Andrei vs Ufimtsev, Anatoly — 0-1 — URS-ch sf Gorky
1950 — Grob, Balazs vs Weiss, Martin — 1-0 — Zurich SUI
1950 — Karastoichev, Emil vs Tsvetkov, Alexandar K — 1/2-1/2 — Sofia BUL
6.Nh3 — 3.4% (1154 parties)
1960 — Bazan, Osvaldo vs Wexler, Bernardo — 0-1 — Sao Paulo BRA
1965 — Suttles, Duncan vs Benko, Pal — 0-1 — New York ch-USA
1965 — Benko, Pal vs Zuckerman, Bernard — 0-1 — New York ch-USA
1965 — Suttles, Duncan vs Jamieson, Robert M — 1-0 — Wch U20 f-B Barcelona ESP
1965 — Benko, Pal vs Saidy, Anthony — 0-1 — New York ch-USA