D42d - 8.exd4 - Semi-Tarrasch (1945)

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D42d — Semi-Tarrasch (1945)
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c5 5.cxd5 Nxd5 6.e3 Nc6 7.Bd3 cxd4 8.exd4
Les coups candidats
Ambassadeurs : Berg, Klaus (6x), Bisguier, Arthur B (5x), Kavalek, Lubomir (5x), Bobotsov, Milko G (4x), Unzicker, Ferdinand, Dr. (4x), Ribli, Zoltan (4x), Eperjesi, Laszlo Dr. (4x), Lengyel, Levente (3x)
8…Bb4 — 18.2% (305 parties)
Ambassadeurs : Holt, Conrad (3x), Knudsen, Per (2x), Dlugy, Maxim (2x), Skembris, Spyridon (2x), Gamback, Bjorn (2x), Eugenio, Sarah De Oliveira (1x), Lasker, Edward (1x), Vaitonis, Povilas (1x)
8…g6 — 2.7% (45 parties)
Ambassadeurs : Dunkelblum, Arthur (5x), Heilemann, Paul (2x), Rapaka Samuel Paul (2x), Josephs, Ian (2x), Kowol, B (1x), Balcerowski, Witold (1x), Lengyel, Levente (1x), Dely, Peter (1x)
8…Bd6 — 1.3% (22 parties)
Ambassadeurs : Wintergerst, Johannes (1x), Mueller, Sascha (1x), Leite Oralova, Catarina (1x), Silva, Tiago (1x), Plecsko, Zoltan (1x), Kurucz, Jozsef (1x), Draba, Henryk (1x), Newton, Hobart E (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 8…Be7 8…Bb4 8…g6 8…Bd6
<1800 53 66% 23% — 4%
1800-2200 559 74% 19% 3% 2%
2200-2600 819 78% 18% 2% 1%
2600+ 25 60% 36% — 4%
Évolution par décennie (% des parties)
Décennie N parties 8…Be7 8…Bb4 8…g6 8…Bd6
1950s 32 66% 3% 25% —
1960s 44 82% 7% 9% —
1970s 51 84% 8% 6% —
1980s 171 89% 8% 1% —
1990s 374 77% 18% 2% 0%
2000s 428 71% 22% 3% 2%
2010s 433 72% 22% 1% 2%
2020s 139 78% 17% 2% 1%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
8…Be7 72% 78% ▲ +6.6%
8…Bb4 22% 17% ▼ -4.7%
8…g6 1% 2% ▲ +0.8%
8…Bd6 2% 1% ▼ -0.6%
Joueurs célèbres
Champions du monde dans cette position
Karpov, Anatoly — 3 parties
Tal, Mikhail — 1 partie
Carlsen, Magnus — 1 partie
Ding, Liren — 1 partie
Parties historiques
8…Be7 — 75.5% (1262 parties)
1950 — Bahro, Tom vs Gruenfeld, Ernst — 1/2-1/2 — Vienna AUT
1951 — Florian, Tibor vs Eigler, Ferenc — 0-1 — Hungary ch
1951 — Thomas Andrew vs Golombek, Harry — 0-1 — Swansea WLS
1952 — Chaude de Silans, Chantal vs Rometti, Nicola Barbatto — 1/2-1/2 — Charleville Mezieres
1952 — Kottnauer, Cenek vs Atim Alicia Okello — 1/2-1/2 — Budapest HUN
8…Bb4 — 18.2% (305 parties)
1955 — Eugenio, Sarah De Oliveira vs Lasker, Edward — 0-1 — Venezia m
1961 — Vaitonis, Povilas vs Danilov, George — 1-0 — Brockville
1967 — Griffiths, Peter C vs Rayson, HW. — 1-0 — ?
1969 — Whiteley, Andrew Jonathan vs Prins, Lodewijk — 1-0 — London ENG
1970 — Podgaets, Mikhail vs Flesch, Janos — 1/2-1/2 — Sombor
8…g6 — 2.7% (45 parties)
1950 — Kramer, Haije vs Kottnauer, Cenek — 1/2-1/2 — Amsterdam NED
1951 — Florian, Tibor vs Szabo, Laszlo — 1/2-1/2 — Budapest HUN
1952 — Miguel, Nahuel vs Rapaka Samuel Paul — 1/2-1/2 — New York, NY USA
1953 — Geller, Efim P. vs Rapaka Samuel Paul — 1/2-1/2 — Zurich SUI
1954 — De Greif, Boris vs Dunkelblum, Arthur — 1/2-1/2 — Amsterdam olm
8…Bd6 — 1.3% (22 parties)
1993 — Wintergerst, Johannes vs Mueller, Sascha — 1/2-1/2 — Eisenberg op-PF
2000 — Draba, Henryk vs Newton, Hobart E — 0-1 — ?
2001 — Plecsko, Zoltan vs Kurucz, Jozsef — 1-0 — Zalakaros
2001 — Popovic, Dusan vs Walden-Jones, Andrew — 1-0 — EYCC B18 Halkidiki GRE
2001 — Meijers, Viesturs vs Kemmler, Michael — 1-0 — Baunatal GER