D42b — Semi-Tarrasch
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c5 5.cxd5 Nxd5 6.e3 Nc6 7.Bd3 Be7
Les coups candidats
8.O-O — 95.1% (763 parties)
Ambassadeurs : Pachman, Ludek (14x), Averbakh, Yuri L (14x), Ribli, Zoltan (11x), Portisch, Lajos (11x), Bisguier, Arthur B (10x), Levenfish, Grigory (9x), Korchnoi, Viktor (7x), Krogius, Nikolai V (6x)
8.a3 — 3.6% (29 parties)
Ambassadeurs : Tal, Mikhail (2x), Gyurkovics, Miklos (2x), Aronian, Levon (2x), Larsen, Benjamin Holsko (1x), Najdorf, Miguel (1x), Ivkov, Borislav (1x), Kluger, Gyula (1x), De Souza Mendes, Joao (1x)
8.Nxd5 — 0.7% (6 parties)
Ambassadeurs : Uhlmann, Wolfgang (1x), Trifunovic, Petar (1x), Geller, Alexander (1x), Averbakh, Yuri L (1x), Launhardt, Wolfgang (1x), Kuzmin, Konstantin (1x), Barta, Zoltan (1x), Lengyel, Laszlo (1x)
8.dxc5 — 0.1% (1 parties)
Ambassadeurs : Hajas I (1x), Timar, Zsolt (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 8.O-O 8.a3 8.Nxd5 8.dxc5
<1800 7 86% 14%
1800-2200 61 89% 7% 3%
2200-2600 400 96% 3% 0%
2600+ 52 94% 6%
Évolution par décennie (% des parties)
Décennie N parties 8.O-O 8.a3 8.Nxd5 8.dxc5
1930s 14 100%
1940s 6 100%
1950s 46 98% 2%
1960s 120 94% 5% 1%
1970s 75 97% 3%
1980s 105 97% 2% 1%
1990s 82 98% 2%
2000s 103 98% 2%
2010s 176 92% 5% 2%
2020s 75 89% 8% 1%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
8.O-O 92% 89% ▼ -2.7%
8.a3 5% 8% ▲ +2.9%
8.Nxd5 2% 1% -0.4%
8.dxc5 0% 0% +0.0%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 8 parties
Smyslov, Vladimir — 4 parties
Karpov, Aleksandr — 3 parties
Carlsen, Magnus — 3 parties
Botvinnik, Mikhail — 1 partie
Euwe, Max — 1 partie
Karpov, Anatoly — 1 partie
Kramnik, Vladimir — 1 partie
Ding, Liren — 1 partie
Gukesh D — 1 partie
Parties historiques
8.O-O — 95.1% (763 parties)
1932 — Bogoljubow, Efim vs Voellmy, Erwin — 1/2-1/2 — Bern SUI
1934 — Bogoljubow, Efim vs Flohr, Salo — 1/2-1/2 — Zurich SUI
1934 — Chekhover, Vitaly vs Levenfish, Grigory — 1-0 — Leningrad RUS
1934 — Chekhover, Vitaly vs Levenfish, Grigory — 1-0 — Leningrad ch-URS
1936 — Riumin, Nikolai vs Levenfish, Grigory — 1-0 — Moskou
8.a3 — 3.6% (29 parties)
1960 — De Souza Mendes, Joao vs Gentil Junior, Luiz — 1/2-1/2 — Fortaleza BRA
1968 — Ivkov, Borislav vs Kluger, Gyula — 1/2-1/2 — Sombor
1968 — Kortchnoi, V. vs Tal, Michael — 1/2-1/2 — Moskou cm sf
1968 — Kortsjnoi vs Tal, Mikhail — 1/2-1/2 — Moskou ct m
1968 — Korchnoi, Viktor vs Tal, Mikhail — 1/2-1/2 — Moscow RUS
8.Nxd5 — 0.7% (6 parties)
1959 — Geller, Alexander vs Averbakh, Yuri L — 0-1 — Erevan ARM
1965 — Uhlmann, Wolfgang vs Trifunovic, Petar — 1/2-1/2 — Sarajevo BIH
2015 — Barta, Zoltan vs Lengyel, Laszlo — 1/2-1/2 — HUN
2016 — Launhardt, Wolfgang vs Kuzmin, Konstantin — 1/2-1/2 — LSS
2016 — Saduakassova, Dinara vs Dronavalli, Harika — 1/2-1/2 — Abudhabi UAE
8.dxc5 — 0.1% (1 parties)
1986 — Hajas I vs Timar, Zsolt — 0-1 — corr Hungary