B25k — Closed
1.e4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.f4 e5 7.Nf3 Nge7 8.O-O
Les coups candidats
8…O-O — 82.0% (793 parties)
Ambassadeurs : Bastian, Herbert (6x), Siaperas, Triantafyllos (5x), Gheorghiu, Florin (4x), Caire, Francois (4x), Robichaud, Louis (4x), Blatny, Frantisek (3x), Gruenberg, Rainer (3x), Csom, Istvan (3x)
8…Nd4 — 8.0% (77 parties)
Ambassadeurs : Franco Ocampos, Zenon (5x), Liebert, Heinz (3x), Bartsch, Berthold (3x), Kveinys, Aloyzas (2x), Bujosa Ribas, Joan (2x), Himanshu, Sharma (2x), Clarke, Paul R H (1x), Zichichi, Alvise (1x)
8…exf4 — 4.4% (43 parties)
Ambassadeurs : Sammalvuo, Tapani (3x), Lehti, Juhani (2x), Danner, Georg (2x), Kudrin, Sergey (2x), Przewoznik, Dariusz (1x), Kudrin, Adam (1x), Przewoznik, Jan (1x), Kucera, Petr (1x)
8…h6 — 1.4% (14 parties)
Ambassadeurs : Velema, Sander (2x), Trisic, Aleksandar (1x), Bruemmel, Arend (1x), Horak, Michal (1x), Jaracz, Pawel (1x), Lupo, Alfredo (1x), Passerotti, Pierluigi (1x), Niemers, Johannes (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 8…O-O 8…Nd4 8…exf4 8…h6
<1800 19 89% 5%
1800-2200 355 83% 6% 3% 1%
2200-2600 392 78% 11% 7% 3%
2600+ 4 75% 25%
Évolution par décennie (% des parties)
Décennie N parties 8…O-O 8…Nd4 8…exf4 8…h6
1960s 33 97% 3%
1970s 36 89% 6%
1980s 54 89% 4% 4%
1990s 230 81% 7% 6% 1%
2000s 361 80% 10% 4% 2%
2010s 215 82% 9% 4% 1%
2020s 38 76% 5% 8% 5%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
8…O-O 82% 76% ▼ -5.5%
8…Nd4 9% 5% ▼ -3.6%
8…exf4 4% 8% ▲ +3.7%
8…h6 1% 5% ▲ +3.9%
Joueurs célèbres
Champions du monde dans cette position
Karpov, Anatoly — 1 partie
Karpov, Aleksandr — 1 partie
Ju, Wenjun — 1 partie
Parties historiques
8…O-O — 82.0% (793 parties)
1961 — Milev, Zdravko vs Prakhov, Valentin Asenov — 1/2-1/2 — Sofia BUL
1961 — Chernov Anton vs Salov, Sergej — 0-1 — ?
1962 — Ignatiev, Felix N vs Vasiukov, Evgeni — 1/2-1/2 — Moscow RUS
1962 — Minev, Nikolay N vs Vasiukov, Evgeni — 1/2-1/2 — Lasker mem Berlin-Ost
1964 — Blatny, Frantisek vs Jansa, Vlastimil — 0-1 — Veseli nad Moravou
8…Nd4 — 8.0% (77 parties)
1968 — Clarke, Paul R H vs Zichichi, Alvise — 1/2-1/2 — Lugano SUI
1981 — Bohm, E vs Hlavac, Rudolf — 1/2-1/2 — SK Vresova-Dresden M
1989 — Yilmaz, Turhan vs Brunner, Lucas — 0-1 — Haifa ISR
1990 — Schmidt, Bodo vs Rechmann, Peter — 1-0 — GER
1990 — Boutin Fuentes, Guillaume vs Mihevc-Mohr, Narcisa — 0-1 — Sas van Gent NED
8…exf4 — 4.4% (43 parties)
1979 — Kucera, Petr vs Znamenacek, Kvetoslav — 1/2-1/2 — Decin CZE
1979 — Whitehead, Jay E vs Watson, Jacob — 1/2-1/2 — Lone Pine, CA USA
1981 — Przewoznik, Dariusz vs Kudrin, Adam — 1/2-1/2 — Graz WTch jr
1981 — Przewoznik, Jan vs Kudrin, Sergey — 1/2-1/2 — WchT U26 Graz AUT
1990 — Frappier, Clement vs Berube, Richard — 0-1 — Quebec Open
8…h6 — 1.4% (14 parties)
1998 — Horak, Michal vs Jaracz, Pawel — 1/2-1/2 — Pardubice CZE
1998 — Lupo, Alfredo vs Passerotti, Pierluigi — 0-1 — Campobasso
1999 — Trisic, Aleksandar vs Bruemmel, Arend — 1-0 — Hamburg GER
2000 — Niemers, Johannes vs Podzielny, Karl-Heinz — 0-1 — Essen GER
2002 — Velema, Sander vs Bjarnason, Saemundur — 0-1 — Vlissingen NED