B84b - 7.a4 - Scheveningen, Classical (1928)

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B84b — Scheveningen, Classical (1928)
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2 a6 7.a4
Les coups candidats
7…Be7 — 52.9% (1670 parties)
Ambassadeurs : Ftacnik, Lubomir (9x), Dolmatov, Sergey (9x), Jansa, Vlastimil (9x), Zapata, Alonso (8x), Kempinski, Robert (7x), Ermenkov, Evgenij (6x), Tischbierek, Raj (5x), Rachels, Stuart (5x)
7…Nc6 — 21.5% (679 parties)
Ambassadeurs : Van Wely, Loek (11x), Dolmatov, Sergey (7x), Tiviakov, Sergei (6x), Kasparov, Garry (6x), Anand, Viswanathan (5x), Arakhamia-Grant, Ketevan (4x), Tsarouhas, Konstantinos (4x), Ginting, Nasib (3x)
7…Qc7 — 13.8% (436 parties)
Ambassadeurs : Suba, Mihai (12x), Dervishi, Erald (9x), Guido, Flavio (5x), McClement, Andrew (5x), Petrenko, Svetlana (4x), Ghinda, Mihail-Viorel (3x), Zozulia, Anna (3x), Sandu, Mihaela (3x)
7…b6 — 7.0% (222 parties)
Ambassadeurs : Kallio, Heikki (4x), Quinteros, Miguel A. (3x), Yudasin, Leonid (3x), Rantala, Jyrki (2x), Oll, Lembit (2x), Istvanovszki, Kalman (2x), Fischer, Johann (1x), Ghitescu, Theodor (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 7…Be7 7…Nc6 7…Qc7 7…b6
<1800 174 61% 14% 11% 5%
1800-2200 1335 57% 16% 13% 8%
2200-2600 1180 46% 29% 15% 6%
2600+ 49 29% 57% 2% 10%
Évolution par décennie (% des parties)
Décennie N parties 7…Be7 7…Nc6 7…Qc7 7…b6
1950s 23 13% 22% 61% 4%
1960s 17 53% 18% 12% 12%
1970s 60 42% 32% 17% 8%
1980s 234 57% 16% 15% 6%
1990s 849 57% 22% 12% 5%
2000s 1094 51% 23% 13% 9%
2010s 774 52% 21% 14% 7%
2020s 107 59% 16% 10% 8%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
7…Be7 52% 59% ▲ +6.8%
7…Nc6 21% 16% ▼ -4.8%
7…Qc7 14% 10% ▼ -4.2%
7…b6 7% 8% ▲ +1.8%
Joueurs célèbres
Champions du monde dans cette position
Kasparov, Garry — 10 parties
Anand, Viswanathan — 10 parties
Tal, Mikhail — 3 parties
Kramnik, Vladimir — 1 partie
Carlsen, Magnus — 1 partie
Hou, Yifan — 1 partie
Parties historiques
7…Be7 — 52.9% (1670 parties)
1958 — Puiggros, Guillermo vs Garcia Vera, Romeo — 1/2-1/2 — Buenos Aires ARG
1958 — Mollekens, Jozef vs Soultanbeieff, Victor — 0-1 — Mechelen
1959 — McCarthy, Desmond N vs Maedler, Juergen, Dr. — 0-1 — Budapest HUN
1960 — Perman, Torvald vs Weinstein, Raymond — 0-1 — Leningrad RUS
1960 — Mercuri, Lorenzo vs Petrosian, Tigran A. — 0-1 — Leipzig olm
7…Nc6 — 21.5% (679 parties)
1951 — Flores Alvarez, Rodrigo vs Bauza, Lorenzo — 1-0 — Mar del Plata ARG
1951 — Flores Alvarez, Rodrigo vs Bauza, Lorenzo — 1-0 — Mar del Plata zt Mar
1951 — Malich, Burkhard, Dr. vs Darga, Klaus — 0-1 — Leipzig GER
1954 — Pepers, Gustave vs O'Kelly de Galway, Alberic — 0-1 — Antwerp BEL
1958 — Lokvenc, Josef vs Sanguineti, Raúl Carlos — 1-0 — Munchen olm
7…Qc7 — 13.8% (436 parties)
1950 — Kampman, Tijmen vs Hantke, Rolf — 1-0 — Bielefeld
1950 — Porreca, Giorgio vs Nestler, Vincenzo — 1-0 — Venice ITA
1950 — Kampmann, Heiko vs Hantke Rolf — 1-0 — ?
1951 — Kirchhammer vs Elstner, Rudolf — 1-0 — Schwerin GER
1951 — Kirchhammer, Rudolf vs Elstner, Rudolf — 1-0 — Schwerin GER
7…b6 — 7.0% (222 parties)
1951 — Jaeger, Walter vs Zirngibl, Albert — 1-0 — Duesseldorf GER
1961 — Fischer, Johann vs Ghitescu, Theodor — 0-1 — Romania
1962 — Cook, Percy B vs Stuart, E Leslie — 0-1 — Whitby ch-BCF
1975 — Giesen, Dieter vs Thieme, Hans — 1/2-1/2 — Stadtallendorf
1976 — Henao, Raul Fernando vs Vaganian, Rafael A — 1-0 — Caracas VEN