D39i - 8…Qa5 - Ragozin, Vienna (1939)

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D39i — Ragozin, Vienna (1939)
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 Bb4 5.Bg5 dxc4 6.e4 c5 7.Bxc4 cxd4 8.Nxd4 Qa5
Les coups candidats
9.Bd2 — 67.1% (526 parties)
Ambassadeurs : Acciaro, Giuseppe (13x), Müller, Detlef (10x), Harvey, Donald J (9x), Le Bled, Pierre (9x), Clark, Richard I (6x), Allawi Rawlings (6x), Gelfand, Boris (5x), Cade, Steven (5x)
9.Bb5+ — 17.2% (135 parties)
Ambassadeurs : Horvath, Adam (5x), Balta, Mihai Victor (5x), Futida, Souitiro (2x), Gyimesi, Zoltan (2x), Salzmann, Stefan (2x), Welin, Thomas (1x), Rantanen, Yrjo A. (1x), Cabrera Do Nascimento, Tayri (1x)
9.Bxf6 — 15.4% (121 parties)
Ambassadeurs : Rantanen, Yrjo A. (2x), Delchev, Aleksander (2x), Tiemann, Christoph (1x), Dietel, Johannes (1x), Franklin Kagoni (1x), Stoliarov, L. (1x), Zalys, Ignas (1x), Shilov, Aleksander (1x)
9.Nb5 — 0.1% (1 parties)
Ambassadeurs : Glavinac, Goran (1x), Atanasov, Sande (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 9.Bd2 9.Bb5+ 9.Bxf6 9.Nb5
<1800 36 75% 19% 6% —
1800-2200 270 72% 15% 12% 0%
2200-2600 373 65% 18% 16% —
2600+ 49 65% 18% 16% —
Évolution par décennie (% des parties)
Décennie N parties 9.Bd2 9.Bb5+ 9.Bxf6 9.Nb5
1950s 6 — — 100% —
1960s 2 — — 100% —
1980s 7 14% 14% 71% —
1990s 30 43% 30% 27% —
2000s 179 59% 25% 16% 1%
2010s 406 69% 17% 14% —
2020s 154 82% 8% 9% —
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
9.Bd2 69% 82% ▲ +13.5%
9.Bb5+ 17% 8% ▼ -8.1%
9.Bxf6 14% 9% ▼ -5.2%
9.Nb5 0% 0% +0.0%
Joueurs célèbres
Champions du monde dans cette position
Kramnik, Vladimir — 4 parties
Kasparov, Garry — 2 parties
Anand, Viswanathan — 2 parties
Ding, Liren — 2 parties
Carlsen, Magnus — 1 partie
Ju, Wenjun — 1 partie
Hou, Yifan — 1 partie
Parties historiques
9.Bd2 — 67.1% (526 parties)
1987 — Dautov, Rustem vs Levin Brian — 1-0 — USSR
1991 — Zueger, Beat vs Kishnev, Sergey — 1/2-1/2 — Gelsenkirchen GER
1996 — Parzefall, Jan vs Gutfleisch, Ralf — 1-0 — Corr compuserve casual
1997 — Gelfand, Boris vs Tkachiev, Vladislav — 1/2-1/2 — Groningen NED
1997 — Gelfand, Boris vs Tkachiev, Vladislav — 1/2-1/2 — Groningen NED
9.Bb5+ — 17.2% (135 parties)
1988 — Welin, Thomas vs Rantanen, Yrjo A. — 0-1 — Finland-Sweden
1990 — Skeels, James B. vs Schug, Heinz-Erich — 0-1 — ICCF
1990 — Piket, Jeroen vs Hettich, Werner — 1/2-1/2 — The Hague NED
1993 — Futida, Souitiro vs Cabrera Do Nascimento, Tayri — 1-0 — ?
1993 — Futida, Souitiro vs Peiter, Bruno Vonibaldo — 1-0 — ?
9.Bxf6 — 15.4% (121 parties)
1953 — Zalys, Ignas vs Shilov, Aleksander — 0-1 — Montreal CAN
1953 — Trifunovic, Petar vs Gligoric, Sofija — 1/2-1/2 — Mar del Plata ARG
1954 — Franklin Kagoni vs Stoliarov, L. — 1-0 — Ukraine
1954 — Hauptova, Eliska vs Wagnerova, Adela — 1-0 — Czechoslovakia
1956 — Tiemann, Christoph vs Dietel, Johannes — 0-1 — H 176
9.Nb5 — 0.1% (1 parties)
2005 — Glavinac, Goran vs Atanasov, Sande — 0-1 — Struga MKD