D27p - 7.a4 - Classical Defense, Rubinstein Variation (1909)

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D27p — Classical Defense, Rubinstein Variation (1909)
1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.a4
Les coups candidats
Ambassadeurs : ? (20x), fperrot (19x), Garcia Palermo, Carlos Horacio (16x), Nikolic, Predrag (16x), Vladimirov, Yevgeniy (15x), Varga, Zoltan (15x), Sadler, Matthew D (14x), Radulov, Ivan (13x)
7…cxd4 — 5.0% (282 parties)
Ambassadeurs : Buljovcic, Ivan (7x), Brethes, Francois (5x), Ilyin, Pavel Egorovich (5x), Zinn, Lothar (3x), Dzindzichashvili, Roman (3x), Brameyer, Hermann (3x), Portisch, Lajos (2x), Nikolaevsky, Yuri V (2x)
7…b6 — 2.2% (121 parties)
Ambassadeurs : Mikhalevski, Victor (2x), Michenka, Jozef (2x), Pasman, Marks (1x), Khalilbeili, Sultan (1x), OBrien, Erik Michael (1x), Sutherland, Donald (1x), Flear, Glenn C (1x), Rodgaard, John (1x)
7…Qc7 — 2.0% (111 parties)
Ambassadeurs : Radulov, Ivan (5x), Gutmakher, Olga (3x), Eingorn, Vereslav S (2x), Mamedjarova, Zeinab (2x), Nesytova, Anastasia (2x), Platz, Joseph (1x), Levin, David (1x), Platz, Cyril (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 7…Nc6 7…cxd4 7…b6 7…Qc7
<1800 213 87% 5% 1% 1%
1800-2200 1840 85% 6% 3% 3%
2200-2600 2706 90% 5% 2% 2%
2600+ 86 83% 12% 3% 1%
Évolution par décennie (% des parties)
Décennie N parties 7…Nc6 7…cxd4 7…b6 7…Qc7
1950s 33 91% — 3% 6%
1960s 133 86% 11% 1% —
1970s 163 87% 9% 1% 3%
1980s 444 89% 5% 1% 3%
1990s 1104 92% 2% 1% 2%
2000s 1801 90% 4% 2% 2%
2010s 1454 88% 4% 3% 2%
2020s 466 74% 15% 4% 2%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
7…Nc6 88% 74% ▼ -14.1%
7…cxd4 4% 15% ▲ +11.0%
7…b6 3% 4% ▲ +1.0%
7…Qc7 2% 2% +0.2%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 10 parties
Anand, Viswanathan — 7 parties
Botvinnik, Mikhail — 5 parties
Karpov, Anatoly — 4 parties
Kramnik, Vladimir — 4 parties
Smyslov, Vladimir — 1 partie
Kasparov, Garry — 1 partie
Carlsen, Magnus — 1 partie
Parties historiques
7…Nc6 — 88.1% (4933 parties)
1950 — Gereben, Erno vs Sebestyen, Balazs — 1-0 — Budapest HUN
1950 — Vidmar, Milan Sr vs Rabar, Braslav — 1/2-1/2 — Bled SLO
1950 — MULLER vs Kramer, Gerald — 1/2-1/2 — Dubrovnik olm
1951 — Ratner, Boris vs Kan, Ilya A — 1-0 — Leningrad RUS
1951 — Nedeljkovic, Srecko M vs Abdi, Andreas — 1/2-1/2 — Sarajevo BIH
7…cxd4 — 5.0% (282 parties)
1961 — Bertok, Mario Jr. vs Geller, Efim P. — 0-1 — Bled SLO
1963 — Gligoric, Sofija vs Portisch, Lajos — 1/2-1/2 — Sarajevo BIH
1963 — Spassky, Boris Vasily vs Nikolaevsky, Yuri V — 1-0 — Ch URS /2 final)
1964 — Lengyel, Levente vs Portisch, Lajos — 1/2-1/2 — Amsterdam NED
1964 — Bosch van Rosenthal, Edzard vs Bialas, Wolfram — 1-0 — Olpe
7…b6 — 2.2% (121 parties)
1956 — Pasman, Marks vs Khalilbeili, Sultan — 0-1 — Moscow RUS
1961 — OBrien, Erik Michael vs Sutherland, Donald — 1-0 — Oakland
1973 — Garces, Napoleon vs Pilnick, Carl — 1-0 — Buenos Aires ARG
1981 — Vogt, Andreas, Prof. Dr. vs Dilcher, Klaus — 1/2-1/2 — Loehne
1982 — Flear, Glenn C vs Rodgaard, John — 1/2-1/2 — Esbjerg DEN
7…Qc7 — 2.0% (111 parties)
1955 — Platz, Joseph vs Levin, David — 1-0 — Massachusetts
1955 — Platz, Cyril vs Levin Brian — 1-0 — Massachusetts
1975 — De Bruycker, Bernard vs Verstraeten, Roland — 1/2-1/2 — Ghent
1977 — Vehre Jr, John L vs Moody, David W — 0-1 — Bear
1977 — Clark, Brian A vs Gassin, Carl G — 1-0 — ?