D15h - 4…a6 5.e3 b5 - Chameleon (1932)

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D15h — Chameleon (1932)
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 a6 5.e3 b5
Les coups candidats
Ambassadeurs : Volkov, Sergey (39x), Velicka, Petr (30x), Movsesian, Sergei (28x), Bacrot, Etienne (20x), Epishin, Vladimir (15x), Dovzik, Juri (14x), Kiss, Pal (14x), Bukal, Vladimir Jr. (13x)
6.c5 — 20.1% (1367 parties)
Ambassadeurs : Bacrot, Etienne (19x), Volkov, Sergey (17x), Aronian, Levon (16x), Wang, Yue (14x), Malakhov, Vladimir (13x), Kozul, Zdenko (13x), Burmakin, Vladimir (12x), Ni, Hua (9x)
6.cxd5 — 18.0% (1221 parties)
Ambassadeurs : Bareev, Evgeny (6x), Eperjesi, Laszlo Dr. (4x), Bang, Andreas (4x), Gavrikov, Viktor (4x), Acs, Peter (4x), Dreev, Aleksey (4x), Pieper-Emden, Carsten (4x), Marzolo, Cyril (4x)
6.cxb5 — 2.2% (149 parties)
Ambassadeurs : Fischdick, Gisela (2x), Cruz-Lopez Claret, Carlos (2x), Kutsykh, Mikle (2x), Karpov, Anatoly (1x), Hort, Vlastimil (1x), Heinatz, Gundula, Dr. (1x), Kaiser, Dieter (1x), Costley, Martin O (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 6.b3 6.c5 6.cxd5 6.cxb5
<1800 242 55% 14% 26% 6%
1800-2200 2168 55% 17% 24% 4%
2200-2600 3689 63% 21% 14% 1%
2600+ 428 58% 34% 8% 0%
Évolution par décennie (% des parties)
Décennie N parties 6.b3 6.c5 6.cxd5 6.cxb5
1950s 1 — 100% — —
1970s 1 — — 100% —
1980s 26 27% 4% 69% —
1990s 621 57% 3% 36% 4%
2000s 3037 56% 23% 18% 2%
2010s 2727 63% 22% 14% 2%
2020s 372 72% 15% 12% 1%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
6.b3 63% 72% ▲ +9.2%
6.c5 22% 15% ▼ -6.8%
6.cxd5 14% 12% ▼ -1.9%
6.cxb5 2% 1% ▼ -0.8%
Joueurs célèbres
Champions du monde dans cette position
Karpov, Anatoly — 10 parties
Ding, Liren — 8 parties
Carlsen, Magnus — 7 parties
Kramnik, Vladimir — 6 parties
Anand, Viswanathan — 4 parties
Kasparov, Garry — 3 parties
Parties historiques
6.b3 — 59.6% (4044 parties)
1984 — Razuvaev, Yuri S vs Pirttimaki, Timo — 1-0 — Helsinki FIN
1986 — Boersma, Paul vs Rivas Pastor, Manuel — 1-0 — Amsterdam NED
1987 — Timoscenko, Gennadij vs Chekhov, Valery A — 1/2-1/2 — Tashkent UZB
1988 — Kohlweyer, Bernd vs Pieper-Emden, Carsten — 1/2-1/2 — GER
1988 — Ligterink, Gert vs Cuijpers, Frans Andre — 1-0 — Hilversum ch-NED
6.c5 — 20.1% (1367 parties)
1958 — Lagha, Khelil vs Fairhurst, William — 1/2-1/2 — Munich GER
1980 — Asanov, Bolat vs Majorovas, Vitalijus — 1/2-1/2 — Sochi RUS
1993 — Barrenscheen, Holger vs Morlo, Michael, Dr. — 0-1 — ?
1993 — Volkov, Sergey vs Rublevsky, Sergei — 0-1 — Moscow RUS
1994 — Piket, Jeroen vs Bosch, Jeroen — 1/2-1/2 — Amsterdam ch-NED
6.cxd5 — 18.0% (1221 parties)
1975 — Dorfman, Iossif vs Popov, Nikolay — 1-0 — ?
1980 — Balashov, Yuri vs Maiorov, Vladimir — 1-0 — Klaipeda
1981 — Tukmakov, Vladimir B vs Gavrikov, Viktor — 1/2-1/2 — Frunze ch-URS
1981 — Kharitonov, Andrei vs Gavrikov, Viktor — 1-0 — Moscow RUS
1985 — Garcia Palermo, Carlos Horacio vs Rivas Pastor, Manuel — 1-0 — Benasque ESP
6.cxb5 — 2.2% (149 parties)
1990 — Karpov, Anatoly vs Hort, Vlastimil — 1/2-1/2 — Biel SUI
1992 — Punga, A. vs Demian, Alesia — 0-1 — cr.
1992 — Galliamova, Alisa vs Fischdick, Gisela — 1-0 — Debrecen HUN
1993 — Jaksland, Tim vs Christiansen, Jens Jorgen — 1-0 — Denmark
1994 — Heinatz, Gundula, Dr. vs Fischdick, Gisela — 1/2-1/2 — Dresden GER