A68c - 9.Be2 - Four Pawns (1925)

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A68c — Four Pawns (1925)
1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.f4 Bg7 8.Nf3 O-O 9.Be2
Les coups candidats
Ambassadeurs : Kahn, Evarth Dr. (35x), Vaisser, Anatoli (29x), De Lagontrie, Jean (24x), Devocelle, Luc (20x), Hage, Henk H (19x), De Smet, Karl (18x), Ziegert, Andreas (18x), Almer, Guenter (17x)
Ambassadeurs : Kahn, Evarth Dr. (36x), Banikas, Hristos (20x), Vaisser, Anatoli (18x), Mercadal Benejam, Josep (17x), Cebalo, Miso (15x), Rain, Ricardo Ernesto (13x), Buckley, Graeme N (12x), Schoen, Wolfram (10x)
Ambassadeurs : Segal, Alexandru Sorin (9x), Menyhart, Tibor (6x), Sosonko, Gennadi (5x), Zaitsev, Alexander (5x), Stluka, Frantisek (5x), De Villiers, Charles (4x), Kahn, Evarth Dr. (4x), Niemela, Ilmari Aarne (3x)
9…Nbd7 — 4.6% (355 parties)
Ambassadeurs : Leveille, Francois (6x), Chiku-Ratte, Olivier-Kenta (6x), Choroszej, Aleksander (5x), Perenyi, Bela (4x), Nordahl, Helge (4x), Bach, Matthias (4x), Szekely, Peter (3x), Zaitsev, Igor A (3x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 9…Re8 9…Bg4 9…b5 9…Nbd7
<1800 288 61% 21% 8% 3%
1800-2200 3266 52% 28% 9% 5%
2200-2600 2840 38% 43% 8% 6%
2600+ 18 39% 50% — 11%
Évolution par décennie (% des parties)
Décennie N parties 9…Re8 9…Bg4 9…b5 9…Nbd7
1950s 12 75% — 17% —
1960s 201 54% 12% 25% —
1970s 272 59% 15% 19% 1%
1980s 558 49% 30% 12% 3%
1990s 2098 49% 33% 9% 2%
2000s 2340 45% 39% 7% 4%
2010s 1881 49% 34% 6% 6%
2020s 340 40% 22% 12% 21%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
9…Re8 49% 40% ▼ -8.4%
9…Bg4 34% 22% ▼ -11.2%
9…b5 6% 12% ▲ +6.2%
9…Nbd7 6% 21% ▲ +15.0%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 3 parties
Ding, Liren — 2 parties
Anand, Viswanathan — 1 partie
Kasparov, Garry — 1 partie
Ju, Wenjun — 1 partie
Parties historiques
9…Re8 — 47.8% (3683 parties)
1954 — Lehmann, Karl-Heinz vs Toran Albero, Roman — 1/2-1/2 — Munich zt Munich GER
1954 — Khavin, Abram Leonidovich vs Zveriaka — 1-0 — Kiev UKR
1954 — Golovko, Nikolay Grigorievic vs Pasman, Marks — 0-1 — Riga LAT
1955 — Gromek, Jozef vs Saigin, Vladimir — 0-1 — Soviet Union
1955 — Portisch, Lajos vs Dely, Peter — 1-0 — Budapest HUN
9…Bg4 — 33.0% (2544 parties)
1961 — Ljungquist, Lennart vs Bobotsov, Milko G — 1/2-1/2 — Marianske Lazne
1962 — Malich, Burkhard, Dr. vs Anastassopulos, Anastasios — 1-0 — Varna BUL
1962 — Malich, Burkhard, Dr. vs Anastassopoulos, Alexio — 1-0 — Varna BUL
1962 — Zaitsev, Alexander vs Pelts, Roman — 1/2-1/2 — Minsk BLR
1962 — Szukszta, Janus vs Haag, Ervin — 1/2-1/2 — Budapest HUN
9…b5 — 8.9% (682 parties)
1957 — Bosch van Rosenthal, Edzard vs Durao, Joaquim — 1-0 — Dublin zt
1959 — Fraidakis, Pantelis vs Bobotsov, Milko G — 0-1 — BUL-ch Sofia BUL
1960 — Niemela, Ilmari Aarne vs Guthi, I. — 1-0 — Leipzig GER
1960 — Niemela, Ilmari Aarne vs Guthi, I. — 1-0 — Leipzig olm
1960 — Balcerowski, Witold vs Doda, Zbigniew — 0-1 — Poland ch
9…Nbd7 — 4.6% (355 parties)
1971 — Knezevic, Milorad vs Zaitsev, Igor A — 1/2-1/2 — Smederevska Palanka
1973 — Khudyakov, Alexander vs Zaitsev, Igor A — 1/2-1/2 — ?
1975 — Peev, Peicho vs Velikov, Petar — 1-0 — ?
1983 — Ehlvest, Jaan vs Szekely, Peter — 1/2-1/2 — Tallinn EST
1985 — Bykhovsky, Anatoly A vs Kuzmin, Alexey — 1-0 — Moscow RUS