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A34a — Symmetrical, 3 Knights (1926)
1.c4 c5 2.Nc3 Nf6 3.Nf3 d5 4.cxd5 Nxd5 5.e4 Nb4 6.Bc4
Les coups candidats
6…Nd3+ — 83.0% (651 parties)
Ambassadeurs : Langer, Michael (7x), Suba, Mihai (6x), Miles, Anthony J (5x), Seirawan, Yasser (5x), Sutovsky, Emil (5x), Svidler, Peter (5x), Peters, Alexander John (3x), Pinter, Jozsef (3x)
6…Be6 — 11.6% (91 parties)
Ambassadeurs : Suba, Mihai (4x), Chow, Albert (3x), Chekhov, Valery A (2x), Kharitonov, Andrei (2x), Zilberstein, Valery I (2x), O'Kelly de Galway, Alberic (2x), Agdestein, Simen (2x), Suetin, Alexey S (2x)
6…e6 — 3.3% (26 parties)
Ambassadeurs : Miezis, Normunds (3x), Kottnauer, Cenek (1x), Greenfeld, Alon (1x), Bronstein, Luis Marcos (1x), Frias Apablaza, Victor (1x), Gheorghiu, Florin (1x), Peters, Alexander John (1x), Murey, Jacob (1x)
6…N8c6 — 0.9% (7 parties)
Ambassadeurs : Condie, Mark L (1x), Shamkovich, Leonid (1x), Marchand, Jacques (1x), Rousseau, Daniel (1x), Koopmann, Rolf, Dr. (1x), Heinzel, Olaf (1x), Szerlak, Andrzej (1x), Wilson, Mark L (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 6…Nd3+ 6…Be6 6…e6 6…N8c6
<1800 15 87% 13% — —
1800-2200 170 85% 6% 5% 2%
2200-2600 450 84% 11% 4% 1%
2600+ 54 93% 7% — —
Évolution par décennie (% des parties)
Décennie N parties 6…Nd3+ 6…Be6 6…e6 6…N8c6
1950s 3 33% 33% 33% —
1970s 39 28% 62% 8% —
1980s 118 75% 19% 2% 3%
1990s 102 75% 18% 3% —
2000s 185 90% 5% 4% —
2010s 209 90% 4% 3% 1%
2020s 128 91% 5% 2% 1%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
6…Nd3+ 90% 91% ▲ +1.0%
6…Be6 4% 5% ▲ +1.2%
6…e6 3% 2% ▼ -1.8%
6…N8c6 1% 1% ▼ -0.7%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 2 parties
Kasparov, Garry — 2 parties
Hou, Yifan — 1 partie
Parties historiques
6…Nd3+ — 83.0% (651 parties)
1955 — Elliott, Henry J vs Sullivan, Joseph G — 0-1 — ?
1974 — Dahlhaus, Friedhelm vs Baltruschat, Rudolf — 1-0 — ?
1974 — Benko, Pal vs Garcia , Gandy — 1-0 — Hastings ENG
1978 — Perez Nivar, Marco Tulio vs Warsali, Edan — 1-0 — Buenos Aires ARG
1978 — Ungureanu, Emil vs Alburt, Lev — 1/2-1/2 — Bucharest ROU
6…Be6 — 11.6% (91 parties)
1956 — O'Kelly de Galway, Alberic vs Mackay, Donald G — 1/2-1/2 — Bognor Regis
1972 — Hickman, Herbert W vs Ruys, Frank C — 1-0 — USCCC-1
1973 — Wastfelt Torsten vs Englund Helge — 0-1 — ?
1976 — Ornstein, Axel vs Schmidt, Aaron Joel — 0-1 — Malmo SWE
1976 — O'Kelly de Galway, Alberic vs Palatnik, Semon — 1/2-1/2 — Solingen GER
6…e6 — 3.3% (26 parties)
1950 — Kottnauer, Cenek vs Greenfeld, Alon — 1-0 — Schiavno Zdroj
1975 — Portisch, Lajos vs Lengyel, Levente — 1/2-1/2 — HUN
1978 — Bronstein, Luis Marcos vs Frias Apablaza, Victor — 1/2-1/2 — Tramandai zt
1978 — Gheorghiu, Florin vs Peters, Alexander John — 1/2-1/2 — Lone Pine open
1981 — Whitehouse, David vs Poschel, Paul — 0-1 — E Lansing ch-MI M/X
6…N8c6 — 0.9% (7 parties)
1983 — Marchand, Jacques vs Rousseau, Daniel — 1-0 — Quebec ch Reserve
1984 — Condie, Mark L vs Shamkovich, Leonid — 1/2-1/2 — Troon
1989 — Koopmann, Rolf, Dr. vs Heinzel, Olaf — 1/2-1/2 — BL2-W8889 GER
2010 — Burdik, Lubomir vs Cuhra, Martin — 1/2-1/2 — Czech Republic
2014 — Szerlak, Andrzej vs Wilson, Mark L — 1-0 — ICCF