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A02n — Bird (1942)
1.f4 Nf6 2.Nf3
Les coups candidats
Ambassadeurs : Arnold, Robert G (29x), Costa Trave, Jaume (22x), Heinola, Kari P. (20x), Just, Gabriele, Dr. (15x), Larsen, Bent Ravn (14x), Pelikán, Jiří (13x), Brodie, Hugh (11x), Rotstein, Jefim (11x)
Ambassadeurs : Arnold, Robert G (21x), Brodie, Hugh (10x), Strobel, Ferdinand (8x), Heinola, Kari P. (7x), Hanegby, Avigdor (7x), Roynet, Sylvie (7x), Babb, Jeff (7x), Milnes, Anthony C P (6x)
Ambassadeurs : Arnold, Robert G (10x), Babb, Jeff (6x), Pelikán, Jiří (3x), Faleg, Alberto (3x), Bryntse, Arne (3x), Bailey, Gregory (3x), Jensen, Kristian Rohde (3x), Rocha, Vitor Firmo de Souza (3x)
Ambassadeurs : Antusch, Ingrid (6x), Brodie, Hugh (3x), Schmaranzer, Alfred (3x), Lindner, Jan-Joost (3x), Thurlow, Kevin J (3x), Abanin, Vladimir (2x), Brooks, Michael (2x), Bender, Erwin (2x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 2…g6 2…d5 2…c5 2…d6
<1800 747 39% 23% 9% 12%
1800-2200 3975 48% 23% 11% 10%
2200-2600 1574 61% 17% 12% 5%
2600+ 5 20% 40% 20% —
Évolution par décennie (% des parties)
Décennie N parties 2…g6 2…d5 2…c5 2…d6
1950s 152 60% 18% 14% 3%
1960s 196 69% 16% 9% 2%
1970s 255 59% 19% 13% 5%
1980s 398 53% 20% 13% 7%
1990s 1465 50% 21% 11% 10%
2000s 2320 46% 23% 11% 10%
2010s 2719 47% 24% 11% 8%
2020s 554 52% 24% 11% 7%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
2…g6 47% 52% ▲ +4.8%
2…d5 24% 24% ▲ +0.6%
2…c5 11% 11% -0.1%
2…d6 8% 7% ▼ -1.5%
Joueurs célèbres
Champions du monde dans cette position
Carlsen, Magnus — 2 parties
Karpov, Anatoly — 1 partie
Tal, Mikhail — 1 partie
Kasparov, Garry — 1 partie
Hou, Yifan — 1 partie
Parties historiques
2…g6 — 48.9% (3941 parties)
1951 — Ragozin, Viacheslav vs Aronin, Lev — 0-1 — URS-ch sf Lviv UKR
1951 — Kostic, Boris vs Udovcic, Mijo — 1/2-1/2 — Ljubljana
1951 — Ragozin, Viacheslav vs Borisenko, Georgy K — 1-0 — URS-ch sf Lviv UKR
1952 — Ragozin, Viacheslav vs Koblencs, Alexander — 1/2-1/2 — Riga LAT
1952 — Dreyer, Kurt vs Donner, Jan-Hein — 1/2-1/2 — NLD-ZAFR
2…d5 — 22.3% (1796 parties)
1951 — Gondim, Jose Adail vs Garrido, Nadio — 1/2-1/2 — Fortaleza BRA
1951 — Nikolac, Juraj vs Janosevic, Dragoljub — 0-1 — Sarajevo BIH
1952 — Sowinski, Jerzy vs Litmanowicz, Wladyslaw — 1-0 — Katowice POL
1952 — Mandrov, Dimitar vs Neikirkh, Oleg — 0-1 — Sofia BUL
1952 — Partyka, Kazimierz vs Makarczyk, Kazimierz — 1/2-1/2 — Miedzyzdroje
2…c5 — 11.0% (883 parties)
1950 — Ricci, Giorgio vs Giustolisi, Alberto — 0-1 — Sorrento ch ITA
1950 — Ricci, Giorgio vs Nestler, Vincenzo — 1/2-1/2 — Sorrento ch ITA
1951 — Basjuni, Sad Zaglul vs Benko, Pal — 1/2-1/2 — Marianske Lazne zt
1952 — Pirc, Vasja vs Molnar, Istvan — 1-0 — Helsinki olm
1953 — Barda, Olaf vs Ciocaltea, Victor — 1-0 — Bucharest ROU
2…d6 — 8.5% (685 parties)
1953 — Stulik, Vlastimil vs Pachman, Ludek — 0-1 — Prague CZE
1955 — Fossum, Andre vs Kjeldsen, Torben — 0-1 — Oslo NOR
1956 — Hansen, David vs Carter, Montie — 1-0 — San Quentin, CA
1959 — Pelikán, Jiří vs Espinosa Flores, Rafael Emilio — 1/2-1/2 — Buenos Aires ARG
1959 — Adamek, Miroslav vs Prucha, Karel — 1/2-1/2 — Trebic