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B28e — O’Kelly (1921)
1.e4 c5 2.Nf3 a6 3.d4 cxd4 4.Nxd4 Nf6
Les coups candidats
5.Nc3 — 86.6% (5412 parties)
Ambassadeurs : Zalys, Ignas (34x), Collins, Richard (27x), Bakalar, Jan (22x), Frey, Walter (12x), Borda, Lajos (11x), Schweber, Samuel (10x), Skorobogatykh, Andrey (9x), Tu, Hoang Thai (8x)
5.Bd3 — 10.6% (665 parties)
Ambassadeurs : Wiest, Georg, Dr. (4x), Balint, Andras (3x), Gerhardt, Peter-Michael (3x), Brzozka, Stefan (2x), Tavares da Silva, Luiz (2x), Mangini, Jose Henrique de Mello (2x), Ortega, Rogelio (2x), Lanzani, Giuliano (2x)
5.e5 — 1.2% (75 parties)
Ambassadeurs : Zalys, Ignas (3x), Kaufman, David (1x), Lazzaroni, Andrea (1x), Corleo (1x), Lomaya, Teimuraz (1x), Blagidze, Alexander (1x), Advik Gajanan Ingle (1x), Collins, Richard (1x)
5.f3 — 1.1% (68 parties)
Ambassadeurs : Yildiz Kadioglu, Betul Cemre (2x), Doucha, Ludvig (1x), Aerts, Bart (1x), Brotz Herzog, F. (1x), Pozdeeva, O. (1x), Merenyi, Gabor (1x), Kovacs, Gyorgy (1x), Lengyel, Laszlo (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 5.Nc3 5.Bd3 5.e5 5.f3
<1800 882 88% 8% 2% 2%
1800-2200 3371 86% 11% 1% 1%
2200-2600 746 84% 15% 0% 0%
2600+ 2 50% 50%
Évolution par décennie (% des parties)
Décennie N parties 5.Nc3 5.Bd3 5.e5 5.f3
1950s 85 92% 7%
1960s 163 89% 8% 2%
1970s 114 90% 8% 2%
1980s 156 90% 8% 1%
1990s 946 89% 9% 1% 1%
2000s 2083 87% 11% 1% 1%
2010s 2131 85% 11% 1% 2%
2020s 575 83% 13% 2% 2%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
5.Nc3 85% 83% ▼ -1.9%
5.Bd3 11% 13% ▲ +1.6%
5.e5 1% 2% ▲ +0.6%
5.f3 2% 2% -0.0%
Joueurs célèbres
Champions du monde dans cette position
Hou, Yifan — 3 parties
Tal, Mikhail — 1 partie
Kasparov, Garry — 1 partie
Parties historiques
5.Nc3 — 86.6% (5412 parties)
1950 — Ivkov, Borislav vs Van den Berg, Carel B — 1-0 — Utrecht NED
1950 — Smyslov, Vasily vs Mueller, Hans — 1-0 — Venice ITA
1950 — Koch, Wolfgang Max, Dr. vs Eken, Max — 0-1 — Berlin GER
1951 — von Saldern, Ruediger vs Musmann, Lothar — 0-1 — Leipzig GER
1951 — Fletzer, Gino vs Eugenio, Sarah De Oliveira — 1-0 — Venezia Sartori
5.Bd3 — 10.6% (665 parties)
1950 — Poulsen, Christian vs O'Kelly, Albéric de Galway — 0-1 — Dubrovnik olm
1952 — Zvorykina, Kira Alekseyevna vs Heemskerk, Fenny — 1-0 — Moscow RUS
1952 — Vasconcelos, Fernando vs Cruz, Walter — 1-0 — Rio de Janeiro BRA
1957 — Matkowski, Wiktor vs Brzozka, Stefan — 0-1 — Warchau ch POL
1957 — Stoliar, Efim Samoilovich vs Spassky, Boris V. — 0-1 — Leningrad RUS
5.e5 — 1.2% (75 parties)
1961 — Kaufman, David vs Zalys, Ignas — 0-1 — Golden Knights
1961 — Lomaya, Teimuraz vs Blagidze, Alexander — 1/2-1/2 — Palanga
1964 — Advik Gajanan Ingle vs Collins, Richard — 0-1 — ?
1966 — Lazzaroni, Andrea vs Corleo — 0-1 — cr.
1971 — Yepez, Carlos vs Zalys, Ignas — 0-1 — Golden Knights
5.f3 — 1.1% (68 parties)
1993 — Doucha, Ludvig vs Aerts, Bart — 1/2-1/2 — Slovakia
1997 — Patschull, Martin vs Richter Elias Noel — 1/2-1/2 — ?
1998 — Brotz Herzog, F. vs Pozdeeva, O. — 0-1 — Pecs
1999 — Merenyi, Gabor vs Kovacs, Gyorgy — 1/2-1/2 — Budapest HUN
1999 — Lengyel, Laszlo vs Nagy, Csaba — 0-1 — Hajduszoboszlo