D14o — Exchange
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.cxd5 cxd5 5.Nc3 Nc6 6.Bf4 Bf5 7.e3 e6 8.Bb5
Les coups candidats
Ambassadeurs : Meduna, Eduard (17x), Espig, Lutz (12x), ? (11x), Beliavsky, Alexander G (9x), Roeder, Frank (9x), Husemann, Andreas (9x), Dolmatov, Sergey (8x), Schurade, Matthias (8x)
8…Bd6 — 7.3% (182 parties)
Ambassadeurs : Kasparov, Garry (2x), Dolmatov, Sergey (2x), Vistaneckis, Isakas (1x), Janoev, David (1x), Sergievsky, Vladimir D (1x), Jakhin, Rashid (1x), Barczay, Laszlo (1x), Cs. Kovacs, Laszlo (1x)
8…Bb4 — 6.7% (165 parties)
Ambassadeurs : Botvinnik, Mikhail (2x), Pomar Salamanca, Arturo (2x), Sokolsky, Alexey (1x), Byvshev, Vasily (1x), Opocensky, Karel (1x), Podgorny, Jiri (1x), Heinicke, Herbert (1x), Halosar, Hermann (1x)
8…a6 — 4.5% (112 parties)
Ambassadeurs : Endean, Andrew (2x), Zavodny, Zdenek (1x), Vacek, Antonin (1x), Schwieger, V. (1x), Sieker, H. (1x), Nykopp, Jan-Michael F. (1x), Perho, Aki (1x), Zysk, Robert (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 8…Nd7 8…Bd6 8…Bb4 8…a6
<1800 59 41% 17% 5% 24%
1800-2200 745 67% 10% 6% 5%
2200-2600 1063 82% 5% 6% 1%
2600+ 31 81% 10% 10%
Évolution par décennie (% des parties)
Décennie N parties 8…Nd7 8…Bd6 8…Bb4 8…a6
1920s 1 100%
1940s 9 56% 33%
1950s 6 67% 17%
1960s 42 50% 14% 29% 2%
1970s 118 84% 7% 8%
1980s 330 89% 2% 5% 2%
1990s 582 79% 5% 4% 4%
2000s 836 70% 9% 5% 5%
2010s 483 62% 11% 8% 7%
2020s 74 65% 8% 14% 4%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
8…Nd7 62% 65% ▲ +3.0%
8…Bd6 11% 8% ▼ -3.3%
8…Bb4 8% 14% ▲ +5.2%
8…a6 7% 4% ▼ -2.8%
Joueurs célèbres
Champions du monde dans cette position
Botvinnik, Mikhail — 2 parties
Kasparov, Garry — 2 parties
Kramnik, Vladimir — 2 parties
Tal, Mikhail — 1 partie
Carlsen, Magnus — 1 partie
Parties historiques
8…Nd7 — 73.2% (1815 parties)
1928 — Anaya Oger, Hector vs Gabarain J — 1-0 — Montevideo ch-URU
1946 — Opocensky, Karel vs Trifunovic, Petar — 0-1 — Prague CZE
1946 — Tomovic, Vasilje vs Trifunovic, Petar — 0-1 — Zagreb CRO
1948 — Opocensky, Karel vs Yanofsky, Daniel Abraham — 1/2-1/2 — Karlovy Vary
1948 — Opocensky, Karel vs Ivkov, Bojidar — 1-0 — Rogaska Slatina
8…Bd6 — 7.3% (182 parties)
1961 — Vistaneckis, Isakas vs Janoev, David — 0-1 — Palanga
1962 — Sergievsky, Vladimir D vs Jakhin, Rashid — 1/2-1/2 — Minsk BLR
1962 — Kottnauer, Cenek vs Trifunovic, Petar — 1/2-1/2 — Beverwijk NED
1965 — Mojzis, Jaroslav vs Petras, Jan — 1/2-1/2 — CSR-ch Army Prague CZE
1967 — Roizman, Abram Y vs Kholmov, Ratmir D — 1/2-1/2 — Moscow RUS
8…Bb4 — 6.7% (165 parties)
1941 — Heinicke, Herbert vs Halosar, Hermann — 1-0 — Graz AUT
1948 — Opocensky, Karel vs Podgorny, Jiri — 1-0 — Karlovy Vary
1949 — Sokolsky, Alexey vs Byvshev, Vasily — 1/2-1/2 — Vilnius LTU
1958 — Vesely, Jiri vs Pacsay, Laszlo — 1/2-1/2 — Varna BUL
1961 — Botvinnik, Mikhail vs Tal, Mikhail — 1-0 — Moskou wch-m
8…a6 — 4.5% (112 parties)
1969 — Zavodny, Zdenek vs Vacek, Antonin — 1/2-1/2 — Brno CZE
1981 — Szekely, Panna Szandra vs Bajovic, Milan — 0-1 — Plovdiv BUL
1983 — Zysk, Robert vs Gulgener — 1-0 — Ravenna jr
1986 — Nykopp, Jan-Michael F. vs Perho, Aki — 1-0 — ?
1988 — Schwieger, V. vs Sieker, H. — 1/2-1/2 — corr BdF/H