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C83a — Open, Classical Defense (1909)
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.c3 Be7
Les coups candidats
Ambassadeurs : Korchnoi, Viktor (14x), Starace, Umberto (12x), Acciaro, Giuseppe (10x), Klewe, Wolfgang (10x), Unzicker, Ferdinand, Dr. (9x), Sorin, Ariel (7x), Short, Nigel D (5x), Stieg, Hans-Juergen (5x)
Ambassadeurs : Unzicker, Ferdinand, Dr. (9x), Pilnik, Herman (4x), Milev, Zdravko (4x), Cortlever, Nico (4x), Starace, Umberto (4x), Acciaro, Giuseppe (4x), Pachman, Ludek (3x), Johansson, Martin 1979 (3x)
10.Bc2 — 7.8% (200 parties)
Ambassadeurs : Shianovsky, Vladislav I (6x), Korchnoi, Viktor (4x), Amin, Bassem (4x), Bronstein, David I (3x), Sultan (3x), Fischer, Robert J (2x), Unzicker, Ferdinand, Dr. (2x), Sakharov, Yuri G. (2x)
Ambassadeurs : Robson, Ray (3x), Grischuk, Alexander (2x), Bandal, Rosendo Jr (1x), Angantysson, Haukur (1x), Bigot, Louis (1x), Hayes, Christiaan (1x), Ribeiro, Joao (1x), Pena, Gianni Michael (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 10.Nbd2 10.Be3 10.Bc2 10.Re1
<1800 103 51% 22% 6% 5%
1800-2200 780 59% 18% 6% 5%
2200-2600 770 62% 17% 9% 4%
2600+ 110 48% 11% 19% 9%
Évolution par décennie (% des parties)
Décennie N parties 10.Nbd2 10.Be3 10.Bc2 10.Re1
1950s 145 30% 32% 2% 3%
1960s 158 30% 37% 16% 4%
1970s 164 53% 27% 6% 3%
1980s 276 57% 33% 3% 3%
1990s 392 60% 19% 5% 4%
2000s 498 58% 17% 6% 7%
2010s 451 59% 16% 7% 7%
2020s 480 58% 14% 15% 3%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
10.Nbd2 59% 58% ▼ -1.7%
10.Be3 16% 14% ▼ -2.4%
10.Bc2 7% 15% ▲ +7.9%
10.Re1 7% 3% ▼ -4.2%
Joueurs célèbres
Champions du monde dans cette position
Anand, Viswanathan — 10 parties
Karpov, Anatoly — 4 parties
Tal, Mikhail — 3 parties
Carlsen, Magnus — 3 parties
Botvinnik, Mikhail — 1 partie
Kasparov, Garry — 1 partie
Hou, Yifan — 1 partie
Ding, Liren — 1 partie
Gukesh D — 1 partie
Parties historiques
10.Nbd2 — 54.9% (1408 parties)
1950 — Castillo Bermudez, Manuel vs Eken, Max — 1/2-1/2 — Dubrovnik CRO
1951 — Kramer, Haije vs Unzicker, Ferdinand, Dr. — 1/2-1/2 — Bad Pyrmont GER
1951 — Keres, Paul vs Averbakh, Yuri L — 1/2-1/2 — Moscow RUS
1951 — Keres, Paul Petrovich vs Averbakh, Yuri L — 1/2-1/2 — Moscow Moscow RUS
1951 — Mangini, Jose Henrique de Mello vs De Souza Mendes, Joao — 0-1 — Fortaleza BRA
10.Be3 — 21.1% (540 parties)
1950 — Douglas, R.A.. vs French, Cyrus L. — 1-0 — ?
1950 — Unzicker, Ferdinand, Dr. vs Eken, Max — 1/2-1/2 — Dubrovnik olm
1950 — Mitchell, Graham Russell vs Malmgren, Harald — 1/2-1/2 — ICCF
1950 — Schmid, Lothar vs Reifenberg, R. — 1-0 — Southsea ENG
1950 — Watson, Arthur T vs Whyld, Kenneth — 1-0 — Buxton
10.Bc2 — 7.8% (200 parties)
1952 — Bronstein, David I vs Keres, Paul Petrovich — 1-0 — USSR
1954 — Barda, Olaf vs Hayes, Christiaan — 1-0 — Dyckhoff Memorial A 5456
1955 — Brat, Vaclav Dr vs Jezek, Stanislav — 0-1 — Brno ch sf
1960 — Lloyd, David Edward vs Beach, Thomas John — 0-1 — Leicester
1961 — Bronstein, David I vs Abdraimanov, K. — 1-0 — Vilnius LTU
10.Re1 — 4.8% (123 parties)
1952 — Leiva Rodrigo vs Pasero, Paolina — 1-0 — Argentina
1952 — Botvinnik, Mikhail vs Kan, Ilya A — 1-0 — Moscow RUS
1953 — Kurkicwicz vs Sojka, E — 1-0 — ?
1954 — Bigot, Louis vs Hayes, Christiaan — 1-0 — Dyckhoff Memorial A 5456
1955 — Gemelli, Antonio vs Seri Izdihar Mohd Shoberi — 0-1 — cr.