D40m - 8.c5 - Semi-Tarrasch (1907)

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D40m — Semi-Tarrasch (1907)
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c5 5.e3 Nc6 6.a3 cxd4 7.exd4 Be7 8.c5
Les coups candidats
8…Ne4 — 63.0% (300 parties)
Ambassadeurs : Forintos, Gyozo V (3x), Averbakh, Yuri L (2x), Savon, Vladimir (2x), Khenkin, Igor (2x), Zaitshek (2x), Madeu, Fernando Antonio de B. (2x), Drozdovskij, Yuri (2x), Galvan Farias, Victor Andres (1x)
8…O-O — 26.7% (127 parties)
Ambassadeurs : Ivkov, Borislav (3x), Baretic, Zvonimir (2x), Bryson, Douglas M (2x), Veroci, Zsuzsa (1x), Krukovsky, Alexander (1x), Berezhnoy, Viktor (1x), Rotstein, Jefim (1x), Napolitano, Mario (1x)
8…a5 — 4.8% (23 parties)
Ambassadeurs : Santamaria, Vicens (1x), Vintimilla, Patricio (1x), Bondoc, Dan-Vladimir (1x), Stoian, Mihail (1x), Sigrist, Walter (1x), Trachsel, Peter (1x), Toth, Szilvia (1x), Sarkany, Petra (1x)
8…b6 — 3.6% (17 parties)
Ambassadeurs : Durrant, Paul Eo (1x), Donnelly, Mike J Dr (1x), Tabatadze, Tamaz (1x), Miranovic, Rajko (1x), Gheorghiu, Florin (1x), Kerr, Bill (1x), Ljubic, Juro (1x), Marinkovic, Aca (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 8…Ne4 8…O-O 8…a5 8…b6
<1800 20 30% 50% 10% 5%
1800-2200 183 54% 31% 7% 5%
2200-2600 186 76% 20% 3% 2%
2600+ 9 100% — — —
Évolution par décennie (% des parties)
Décennie N parties 8…Ne4 8…O-O 8…a5 8…b6
1950s 4 75% 25% — —
1960s 25 80% 16% — 4%
1970s 24 67% 25% — 8%
1980s 44 77% 16% 2% 2%
1990s 73 60% 30% 5% 1%
2000s 130 57% 33% 3% 5%
2010s 121 60% 27% 8% 3%
2020s 55 67% 20% 7% 2%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
8…Ne4 60% 67% ▲ +7.8%
8…O-O 27% 20% ▼ -7.3%
8…a5 8% 7% ▼ -1.0%
8…b6 3% 2% ▼ -1.5%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 1 partie
Kasparov, Garry — 1 partie
Parties historiques
8…Ne4 — 63.0% (300 parties)
1957 — Cuderman, Vinko vs Janosevic, Dragoljub — 1/2-1/2 — Sombor
1959 — Jensen, Erik Bartram vs Herink, Miroslav — 0-1 — Marianske Lazne
1959 — Pietzsch, Wolfgang vs Zirngibl, Albert — 1/2-1/2 — GDR-ch Leipzig GER
1961 — Uhlmann, Wolfgang vs Korchnoi, Viktor — 0-1 — Budapest HUN
1963 — Petrosian, Tigran V. vs Olafsson, Fridrik — 1/2-1/2 — Los Angeles, CA USA
8…O-O — 26.7% (127 parties)
1959 — Napolitano, Mario vs Beggi, Pierluigi — 1/2-1/2 — Rimini
1961 — Uhlmann, Wolfgang vs Weber, Bernd, Dr. — 1-0 — Premnitz GER
1964 — Berezhnoy, Viktor vs Rotstein, Jefim — 0-1 — Kiev UKR
1966 — Savon, Vladimir vs Gurgenidze, Bukhuti — 1/2-1/2 — Tbilisi ch-URS
1968 — Veroci, Zsuzsa vs Krukovsky, Alexander — 1-0 — URS
8…a5 — 4.8% (23 parties)
1982 — Santamaria, Vicens vs Vintimilla, Patricio — 1/2-1/2 — Lucerne SUI
1994 — Sigrist, Walter vs Trachsel, Peter — 0-1 — Lucerne SUI
1995 — Toth, Szilvia vs Sarkany, Petra — 1-0 — Korcsoportos donto
1999 — Bondoc, Dan-Vladimir vs Stoian, Mihail — 1-0 — Techirghiol
1999 — Kaiser, Harald vs Hackbarth, Christa — 1/2-1/2 — Passau
8…b6 — 3.6% (17 parties)
1968 — Durrant, Paul Eo vs Donnelly, Mike J Dr — 1-0 — Whitby
1971 — Gheorghiu, Florin vs Kerr, Bill — 1/2-1/2 — Adelaide AUS
1979 — Ljubic, Juro vs Marinkovic, Aca — 0-1 — YU corr
1988 — Tabatadze, Tamaz vs Miranovic, Rajko — 0-1 — Novi Sad op Novi Sad YUG
1999 — Boulay, David vs Hua, Lefong — 1/2-1/2 — Quebec-chJ Quebec CAN