D97i - 8…b5 9.Qb3 - Russian, Alekhine (1969)

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D97i — Russian, Alekhine (1969)
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qb3 dxc4 6.Qxc4 O-O 7.e4 a6 8.e5 b5 9.Qb3
Les coups candidats
Ambassadeurs : Husemann, Andreas (36x), Agathiyan Susil (17x), Kozul, Zdenko (14x), Deforel, Jorge Eduardo (13x), Sherwood, Russell (12x), Epishin, Vladimir (11x), Ruck, Robert (11x), Ederer, Karel (11x)
9…Ng4 — 4.7% (90 parties)
Ambassadeurs : Fogarasi, Tibor (5x), Soffer, Ram (4x), Horvath, Csaba (4x), Sax, Gyula (3x), Sion Castro, Marcelino (3x), Marinelli, Tullio (3x), Jukic, Branimir (3x), Giorgadze, Giorgi Gel (3x)
9…Be6 — 3.8% (73 parties)
Ambassadeurs : Cichy, Michael, Dr. (2x), Filep, Tibor (1x), Anay Barche (1x), Riemer, Wolfgang (1x), Megier, Wolfgang O. (1x), Meulders, Richard (1x), Goormachtigh, Johan (1x), Bastida Rementeria, Ricardo (1x)
9…Ne8 — 0.4% (7 parties)
Ambassadeurs : Cools, Gorik (2x), Bilobrk, Franjo (1x), Alterman, Boris (1x), Kallai, Gabor (1x), Gurevich, Valery M. (1x), Bodrogi, Laszlo (1x), Czimer, Jozsef (1x), Hettler, Wolfgang (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 9…Nfd7 9…Ng4 9…Be6 9…Ne8
<1800 87 93% 1% 5% —
1800-2200 736 92% 2% 5% 0%
2200-2600 870 90% 7% 3% 1%
2600+ 56 98% 2% — —
Évolution par décennie (% des parties)
Décennie N parties 9…Nfd7 9…Ng4 9…Be6 9…Ne8
1960s 1 — — 100% —
1970s 32 69% 19% 12% —
1980s 63 75% 16% 10% —
1990s 305 77% 18% 3% 1%
2000s 455 93% 3% 4% 1%
2010s 901 96% 1% 3% 0%
2020s 172 96% — 3% —
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
9…Nfd7 96% 96% +0.3%
9…Ng4 1% 0% ▼ -0.7%
9…Be6 3% 3% +0.3%
9…Ne8 0% 0% -0.1%
Joueurs célèbres
Champions du monde dans cette position
Karpov, Anatoly — 3 parties
Anand, Viswanathan — 1 partie
Kasparov, Garry — 1 partie
Kramnik, Vladimir — 1 partie
Carlsen, Magnus — 1 partie
Parties historiques
9…Nfd7 — 90.9% (1753 parties)
1971 — Portisch, Lajos vs Adorjan, Andras — 0-1 — Amsterdam NED
1971 — Portisch, Lajos vs Ribli, Zoltan — 1/2-1/2 — Budapest HUN
1971 — Portisch, Lajos vs Vadasz, Laszlo — 1/2-1/2 — Budapest HUN
1972 — Madjar, L. vs Ziger, Silvestar — 0-1 — cr.
1972 — Forintos, Gyozo V vs Tompa, Janos — 0-1 — HUN
9…Ng4 — 4.7% (90 parties)
1970 — Portisch, Lajos vs Adorjan, Andras — 1/2-1/2 — Budapest HUN
1976 — Kozlov, Vladimir E vs Anikaev, Yuri N — 1/2-1/2 — Novosibirsk RUS
1976 — Stock, Michael vs Demian, Valer — 0-1 — cr.
1977 — Blackstock, Lesly S F vs Sax, Gyula — 0-1 — Budapest HUN
1978 — Ivkov, Borislav vs Sax, Gyula — 1/2-1/2 — Osijek
9…Be6 — 3.8% (73 parties)
1969 — Filep, Tibor vs Anay Barche — 0-1 — Budapest ch-HUN
1971 — Portisch, Lajos vs Flatow, Alfred — 1-0 — Adelaide AUS
1973 — Murey, Jacob vs Sogaard, Soren — 1-0 — Ch Europe (team) 1973/83
1973 — Murray, John M. vs Sogaard, Ove — 1-0 — EU/MSM/I prel1-01
1977 — Bronstein, David I vs Poutiainen, Pertti — 1-0 — Tallinn EST
9…Ne8 — 0.4% (7 parties)
1990 — Bilobrk, Franjo vs Alterman, Boris — 1/2-1/2 — Pula open
1996 — Kallai, Gabor vs Cools, Gorik — 1/2-1/2 — Belgium
1997 — Gurevich, Valery M. vs Cools, Gorik — 1-0 — Vlissingen open
2000 — Bodrogi, Laszlo vs Czimer, Jozsef — 1-0 — Budapest HUN
2000 — Hettler, Wolfgang vs Streuber, Phillipp — 1/2-1/2 — Griesheim