D14o - 7.e3 e6 8.Bb5 - Exchange (1944)

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D14o — Exchange (1944)
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), Heinig, Wolfram, Dr. (12x), Andersson, Ulf (10x), Dolmatov, Sergey (9x), Roeder, Frank (9x), Bohm, Hans (8x), Beliavsky, Alexander G (8x)
8…Bd6 — 7.6% (192 parties)
Ambassadeurs : Kasparov, Garry (2x), Dolmatov, Sergey (2x), Kovacs, Laszlo (2x), Mojzis, Jaroslav (1x), Petras, Jan (1x), Sergievsky, Vladimir D (1x), Jakhin, Rashid (1x), Barczay, Laszlo (1x)
8…Bb4 — 6.6% (166 parties)
Ambassadeurs : Botvinnik, Mikhail (2x), Pomar Salamanca, Arturo (2x), Trapl, Jindrich (1x), Kupka, Slavoj (1x), Sergievsky, Vladimir D (1x), Zaitsev, Alexander (1x), Petras, Jan (1x), Machacek, Petr (1x)
8…a6 — 4.6% (115 parties)
Ambassadeurs : Zavodny, Zdenek (1x), Vacek, Antonin (1x), Zysk, Robert (1x), Erdil, Gulgun (1x), Schwieger, V. (1x), Sieker, H. (1x), Haritakis, Theodoros (1x), Papaioannou, Georgios (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 123 48% 15% 4% 20%
1800-2200 882 66% 10% 7% 5%
2200-2600 1037 83% 5% 6% 1%
2600+ 26 81% 4% 15% —
Évolution par décennie (% des parties)
Décennie N parties 8…Nd7 8…Bd6 8…Bb4 8…a6
1950s 6 67% — 17% —
1960s 44 52% 14% 27% 2%
1970s 121 84% 7% 8% —
1980s 331 89% 2% 5% 2%
1990s 584 79% 5% 4% 4%
2000s 838 70% 9% 5% 5%
2010s 489 62% 11% 8% 7%
2020s 104 57% 14% 12% 6%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
8…Nd7 62% 57% ▼ -5.0%
8…Bd6 11% 14% ▲ +3.0%
8…Bb4 8% 12% ▲ +4.1%
8…a6 7% 6% ▼ -1.0%
Joueurs célèbres
Champions du monde dans cette position
Botvinnik, Mikhail — 2 parties
Kasparov, Garry — 2 parties
Kramnik, Vladimir — 2 parties
Carlsen, Magnus — 1 partie
Parties historiques
8…Nd7 — 72.8% (1833 parties)
1950 — Rethy, Pal vs Pogats, Jozsef Jr. — 0-1 — Budapest HUN
1951 — Almiron, Martin Alejandro vs Ader Hausman, Walter — 0-1 — Santiago de Chile
1952 — Maderna, Carlos vs Ader, Darya — 1/2-1/2 — Mar del Plata ARG
1957 — Puc, Stojan vs Vukovic, Sava — 1/2-1/2 — Sombor
1962 — Dalko, Nandor vs Arlauskas, Romanas — 0-1 — ICCF
8…Bd6 — 7.6% (192 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, Michael vs Kholmov, Ratmir D — 1/2-1/2 — Moscow RUS
8…Bb4 — 6.6% (166 parties)
1958 — Vesely, Jiri vs Pacsay, Laszlo — 1/2-1/2 — Varna BUL
1961 — Botvinnik, Mikhail vs Tal, Aleksandr S — 1-0 — Moskou wch-m
1962 — Sergievsky, Vladimir D vs Zaitsev, Alexander — 1/2-1/2 — Minsk BLR
1962 — Dalko, Nandor vs Liem Hong Gie — 1-0 — corr Wch4
1962 — Porath, Yosef vs Pomar Salamanca, Arturo — 1/2-1/2 — Varna olm
8…a6 — 4.6% (115 parties)
1969 — Zavodny, Zdenek vs Vacek, Antonin — 1/2-1/2 — Brno CZE
1981 — Szekely, Peter vs Bajovic, Milan — 0-1 — Plovdiv BUL
1983 — Zysk, Robert vs Erdil, Gulgun — 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