D36f - 7.e3 - Exchange (1952)

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D36f — Exchange (1952)
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5 c6 6.Qc2 Be7 7.e3
Les coups candidats
Ambassadeurs : Boensch, Uwe (27x), Andersson, Ulf (8x), Vera Gonzalez-Quevedo, Reynaldo (8x), Portisch, Lajos (8x), Malaniuk, Vladimir P (8x), Kiriakov, Petr (8x), Ciric, Dragoljub M (7x), Zielinski, Sergej (7x)
Ambassadeurs : Thorhallsson, Throstur (8x), Markovic, Zoran S (7x), Portisch, Lajos (6x), Baburin, Alexander (6x), Pigusov, Evgeny (4x), De Souza, Mauro Guimaraes (4x), De Dovitiis, Alejo (4x), Liascovich, Lucas (4x)
Ambassadeurs : Wilson, Matthew R (5x), Moeckel, Edgar, Dr. (3x), Kovanova, Baira (3x), Krogius, Nikolai V (2x), Boutteville, Cesar (2x), Kudoke, Willy (2x), Heuser, Philip, Dr. (2x), Schoenemann, Manfred (2x)
7…Bg4 — 5.8% (517 parties)
Ambassadeurs : Prandstetter, Eduard (6x), Volodin, Viktor (5x), Toth, Bela (3x), Burmakin, Vladimir (3x), Gligoric, Sofija (2x), Beyen, Roland (2x), Anton, Vasil-Efrem (2x), Passerotti, Pierluigi (2x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 7…Nbd7 7…O-O 7…h6 7…Bg4
<1800 525 37% 31% 12% 5%
1800-2200 4082 43% 30% 11% 7%
2200-2600 3177 60% 25% 5% 5%
2600+ 110 87% 5% 5% 3%
Évolution par décennie (% des parties)
Décennie N parties 7…Nbd7 7…O-O 7…h6 7…Bg4
1950s 68 49% 19% 16% 7%
1960s 93 48% 29% 8% 6%
1970s 80 54% 19% 9% 11%
1980s 321 62% 21% 6% 7%
1990s 1437 54% 23% 7% 6%
2000s 2532 47% 30% 7% 7%
2010s 3364 50% 27% 8% 6%
2020s 972 44% 29% 18% 3%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
7…Nbd7 50% 44% ▼ -5.9%
7…O-O 27% 29% ▲ +1.9%
7…h6 8% 18% ▲ +9.9%
7…Bg4 6% 3% ▼ -2.5%
Joueurs célèbres
Champions du monde dans cette position
Botvinnik, Mikhail — 5 parties
Kasparov, Garry — 5 parties
Carlsen, Magnus — 3 parties
Kramnik, Vladimir — 3 parties
Tal, Mikhail — 1 partie
Karpov, Anatoly — 1 partie
Anand, Viswanathan — 1 partie
Gukesh D — 1 partie
Parties historiques
7…Nbd7 — 49.8% (4417 parties)
1950 — Staldi, Cherubino vs Stalda, Giuseppe — 0-1 — Venice ITA
1951 — Ignatenko, P. vs Kruger, Stefan — 1/2-1/2 — Melbourne AUS
1952 — Gligoric, Sofija vs Stahlberg, Gideon — 1/2-1/2 — Helsinki olm
1952 — Byrne, Robert E vs Eliskases, Erich — 1-0 — Helsinki olm
1952 — Byrne, Robert E vs Eliskases, Erich — 1-0 — Helsinki FIN
7…O-O — 27.3% (2423 parties)
1952 — Kotov, Alexander vs Yudovich, Mikhail M — 1/2-1/2 — Moscow RUS
1954 — Kozma, Julius vs Sefc, Jan — 0-1 — Prague CZE
1954 — Alster, Ladislav vs Ofstad, Per — 1-0 — Oslo NOR
1955 — Herrmann, Andreas vs Nielsen, Hartvig — 1/2-1/2 — DDR
1955 — Portisch, Lajos vs Hallstrom, Leo — 1/2-1/2 — Antwerp BEL
7…h6 — 9.0% (795 parties)
1952 — Rapaka Samuel Paul vs Grob, Henry — 1-0 — Helsinki olm
1952 — Cruz Filho, Oswaldo vs Madeira de Ley, Manuel — 1/2-1/2 — Rio de Janeiro BRA
1954 — Boutteville, Cesar vs Tartakower, Savielly — 0-1 — Paris FRA
1954 — Kotov, Alexander vs Boutteville, Cesar — 1-0 — Paris tt
1954 — Eken, Max vs Bosch van Rosenthal, Edzard — 1-0 — Amsterdam NED
7…Bg4 — 5.8% (517 parties)
1952 — Rapaka Samuel Paul vs Gligoric, Sofija — 1-0 — New York, NY USA
1955 — Gligoric, Sofija vs O'Kelly de Galway, Alberic — 1-0 — Zagreb CRO
1955 — Abramovich Furman, Semyon vs Kan, Ilya A — 0-1 — Moscow RUS
1955 — Furman, Semyon vs Kan, Ilya — 0-1 — Moskou ch-URS
1956 — Flohr, Salo vs Rejfir, Josef — 1/2-1/2 — Marianske Lazne