D34a - 8.O-O - QGD Tarrasch (1909)

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D34a — QGD Tarrasch (1909)
1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 Nf6 7.Bg2 Be7 8.O-O
Les coups candidats
Ambassadeurs : Orsag, Milan (59x), Weyerstrass, Ronald (55x), Espig, Lutz (54x), Marjanovic, Slavoljub (49x), Morin, Louis (44x), Chandler, Murray G (33x), Thompson, Brian (30x), Uhlmann, Wolfgang (29x)
Ambassadeurs : Fish, Gennadij (8x), Grujic, Danijela (4x), Welling, Gerard (3x), Marusenko, Petr (3x), Michel, Clement Paul (2x), Pavlenko, Oleg (2x), Simagin, Vladimir (1x), Bondarevsky, Igor (1x)
8…c4 — 1.2% (197 parties)
Ambassadeurs : Schmitzer, Klaus (6x), Bach, Matthias (4x), Mozny, Milos (3x), Grujic, Danijela (3x), Nepomucky, Ondrej (3x), Hegeler, Frank (2x), Fiebig, Thomas (2x), Bak, Istvan (1x)
8…cxd4 — 0.9% (142 parties)
Ambassadeurs : Ferrari, Josef (5x), Frois, Antonio (4x), Sobek, Jaroslav (3x), Dankert, Peter (2x), Damborg, Benny Falck (2x), Ventimiglia, Chuck (2x), Galarraga Galarraga, Jimmy Fernan (2x), Thoeny, Hermann (2x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 8…O-O 8…Be6 8…c4 8…cxd4
<1800 548 90% 3% 3% 1%
1800-2200 5731 94% 1% 2% 1%
2200-2600 8043 97% 1% 1% 1%
2600+ 130 98% 2% — —
Évolution par décennie (% des parties)
Décennie N parties 8…O-O 8…Be6 8…c4 8…cxd4
1950s 83 90% 8% — —
1960s 202 95% 2% 1% 2%
1970s 588 96% 1% 0% 1%
1980s 1737 99% 0% 0% 0%
1990s 3264 97% 1% 1% 1%
2000s 4467 96% 1% 1% 1%
2010s 4974 95% 1% 2% 1%
2020s 1054 92% 2% 2% 1%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
8…O-O 95% 92% ▼ -2.5%
8…Be6 1% 2% +0.2%
8…c4 2% 2% +0.4%
8…cxd4 1% 1% +0.1%
Joueurs célèbres
Champions du monde dans cette position
Kasparov, Garry — 10 parties
Karpov, Anatoly — 8 parties
Tal, Mikhail — 6 parties
Kramnik, Vladimir — 6 parties
Anand, Viswanathan — 2 parties
Ding, Liren — 2 parties
Lasker, Emanuel — 1 partie
Smyslov, Vladimir — 1 partie
Botvinnik, Mikhail — 1 partie
Ju, Wenjun — 1 partie
Carlsen, Magnus — 1 partie
Gukesh D — 1 partie
Parties historiques
8…O-O — 95.6% (15653 parties)
1950 — Stulik, Vlastimil vs Petrov, Peter — 1/2-1/2 — CSR-BUL Prague CZE
1950 — Nilsson, Zandor vs Stoltz, Gosta — 0-1 — Stockholm SWE
1950 — Acoltzi Ruiz, Mariana vs Michel, Clement Paul — 0-1 — Mar del Plata ARG
1950 — Nilsson, Abby vs Stoltz, De Raven — 0-1 — Stockholm SWE
1950 — Casas Perea, Fernando vs Piazzini, Luis — 1-0 — Argentina
8…Be6 — 1.3% (206 parties)
1950 — Gligoric, Svetozar vs Michel, Clement Paul — 1/2-1/2 — Mar del Plata ARG
1951 — Simagin, Vladimir vs Bondarevsky, Igor — 1/2-1/2 — Moskou ch-URS
1951 — Lasker, Edward vs Michel, Paul — 0-1 — Vienna AUT
1951 — Lasker, Emanuel vs Michel, Clement Paul — 0-1 — Vienna AUT
1953 — Kholmov, Ratmir D vs Batigin — 1/2-1/2 — URS chT sf
8…c4 — 1.2% (197 parties)
1965 — Kapengut, Albert vs Wood, Christopher — 1-0 — Sinaia
1968 — Bak, Istvan vs Silva Nazzari, Roberto — 1-0 — Lugano olm
1976 — Goormachtigh, Johan vs Hellmayr, Alois — 1/2-1/2 — Winterthur
1978 — Meduna, Eduard vs Jankovec, Ivan — 1-0 — Marianske Lazne
1984 — Agzamov, Georgy vs Garcia, Gildardo — 1-0 — Tunja
8…cxd4 — 0.9% (142 parties)
1962 — Brinck-Claussen, Bjorn vs Wade, Robert G — 1-0 — Varna BUL
1968 — Unzicker, Ferdinand, Dr. vs Pfleger, Helmut, Dr. — 1/2-1/2 — ?
1969 — Smith, Roger vs De Coverly, Roger D — 1/2-1/2 — BCF U21
1969 — Bak, Istvan vs Sapi, Laszlo — 1/2-1/2 — Budapest ch-HUN
1970 — Prameshuber, Alexander vs Bhend, Edwin — 1/2-1/2 — Lugano SUI