B84b - 7.a4 - Scheveningen Classical

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B84b — Scheveningen Classical
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2 a6 7.a4
Eval: [+0.28]
Les coups candidats
7…Be7 — 52.1% (1663 parties)
Ambassadeurs : Ftacnik, Lubomir (9x), Novikov, Igor (9x), Jansa, Vlastimil (8x), Zapata, Alonso (7x), Dolmatov, Sergey (7x), Kempinski, Robert (7x), Browne, Walter Shawn (6x), Tischbierek, Raj (6x)
7…Nc6 — 21.5% (687 parties)
Ambassadeurs : Van Wely, Loek (7x), Tiviakov, Sergei (6x), Dolmatov, Sergey (6x), Navara, David (6x), Kasparov, Garry (5x), Ftacnik, Lubomir (5x), Wojtkiewicz, Aleksander (4x), Kouvatsou, Maria (4x)
7…Qc7 — 14.5% (463 parties)
Ambassadeurs : Suba, Mihai (13x), Dervishi, Erald (7x), Guido, Flavio (5x), Kan, Ilya A (3x), Cramling, Pia (3x), Hausner, Ivan (3x), Zozulia, Anna (3x), Fine, Reuben (2x)
7…b6 — 7.1% (228 parties)
Ambassadeurs : Yudasin, Leonid (4x), Kallio, Heikki (4x), Quinteros, Miguel A. (3x), Oll, Lembit (2x), Rantala, Jyrki (2x), Mazzariol, Oscar Giovanni (2x), Klement, Lukas (2x), Atlas, Valery (2x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 7…Be7 7…Nc6 7…Qc7 7…b6
<1800 76 70% 9% 11% 7%
1800-2200 1093 57% 16% 14% 8%
2200-2600 1277 45% 29% 15% 6%
2600+ 55 36% 51% 2% 9%
Évolution par décennie (% des parties)
Décennie N parties 7…Be7 7…Nc6 7…Qc7 7…b6
1920s 4 25% — 25% 25%
1930s 17 29% 6% 35% 29%
1940s 42 7% 31% 52% 5%
1950s 23 13% 22% 61% 4%
1960s 17 53% 18% 12% 12%
1970s 61 41% 33% 16% 8%
1980s 235 57% 16% 15% 6%
1990s 841 57% 22% 12% 5%
2000s 1092 51% 23% 13% 9%
2010s 770 52% 21% 14% 7%
2020s 90 60% 17% 11% 8%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
7…Be7 52% 60% ▲ +8.1%
7…Nc6 21% 17% ▼ -4.1%
7…Qc7 14% 11% ▼ -3.3%
7…b6 7% 8% ▲ +1.2%
Joueurs célèbres
Champions du monde dans cette position
Anand, Viswanathan — 9 parties
Kasparov, Garry — 9 parties
Botvinnik, Mikhail — 3 parties
Tal, Mikhail — 3 parties
Alekhine, Alexander — 1 partie
Kramnik, Vladimir — 1 partie
Carlsen, Magnus — 1 partie
Hou, Yifan — 1 partie
Parties historiques
7…Be7 — 52.1% (1663 parties)
1928 — Weenink, Henri vs Grau, Roberto G — 1/2-1/2 — The Hague NED
1936 — Factor, Samuel D vs Fine, Reuben — 1/2-1/2 — USA-ch New York, NY USA
1936 — Baturinsky, Victor vs Panov, Aleksandr I. — 0-1 — Moscow RUS
1936 — Stoltz, Gösta vs Feigin, Movsa — 0-1 — Munich GER
1937 — Ilyin Zhenevsky, Alexander vs Alatortsev, Vladimir N. — 1/2-1/2 — Tbilisi ch-URS
7…Nc6 — 21.5% (687 parties)
1939 — Verbitsky, Jaroslaw vs Kirilov, Valentins — 1/2-1/2 — Dniepropetrovsk ch-U
1940 — Botvinnik, Mikhail vs Konstantinopolsky, Alexander — 1-0 — Moskou ch-URS
1940 — Dubinin, Peter vs Gerstenfeld, Eduard — 1-0 — Moskou ch-URS
1941 — Sulik, Franciszek vs Feigin, Movsa — 0-1 — Mar del Plata ARG
1941 — Sulik, Franciszek vs Feigin, M. — 0-1 — Mar del Plata ARG
7…Qc7 — 14.5% (463 parties)
1923 — Johner, Paul vs Fontein, George — 1-0 — Scheveningen NED
1937 — Larsson, Ernst vs Fine, Reuben — 0-1 — Goteborg SWE
1937 — Vos, WH. vs Fine, Reuben — 1/2-1/2 — Amsterdam NED
1939 — Kroliunitsky vs Komarov, Aleksandr — 1-0 — Moscow RUS
1939 — Adams, Weaver vs Green, Matthew R — 1/2-1/2 — New York, NY USA
7…b6 — 7.1% (228 parties)
1926 — Von Holzhausen, Walther vs Johner, Paul — 0-1 — Dresden GER
1931 — Bernstein, Sidney vs Grossman, N. — 1-0 — New York, NY USA
1936 — Elo, Arpad vs Dake, Arthur — 1/2-1/2 — Milwaukee ch
1936 — Factor, Samuel D vs Dake, Arthur William — 0-1 — USA-ch New York, NY USA
1936 — Simchow, A vs Denker, Arnold S — 0-1 — USA