D45s - 5…Nbd7 6.Qc2 Bd6 7.b3 O-O 8.Be2 b6

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D45s —
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Qc2 Bd6 7.b3 O-O 8.Be2 b6
Les coups candidats
9.O-O — 86.3% (1997 parties)
Ambassadeurs : Akesson, Ralf (14x), Drasko, Milan (12x), Gelfand, Boris (11x), Andraschko, Felix (10x), Bjuhr, Arne (10x), Faizrakhmanov, Ramil (10x), Korneev, Oleg (9x), Pavasovic, Dusko (8x)
9.Bb2 — 13.0% (301 parties)
Ambassadeurs : Pulghè, Paolo (10x), Pulghe`, Paolo (4x), Voigt, Detlev (3x), Vliet, Erik van (3x), Zaehringer, Daniel (3x), Visakh N R (3x), Hartge, Gedeon (3x), Gretarsson, Helgi Ass (3x)
9.cxd5 — 0.3% (8 parties)
Ambassadeurs : Juarez, Alberto (1x), Hoffman, Alejandro (1x), Skembris, Simon Max (1x), Katzourakis, Pavlos (1x), Koch, Hans-Georg (1x), Grube, Frank (1x), Hannesson, Sigurður Örn (1x), Prati, Alessandro (1x)
9.a4 — 0.2% (4 parties)
Ambassadeurs : Simplina, Arthur (1x), Krakovský, Peter (1x), Peiró Aparisi, Josep (1x), Ozen, Bahadir (1x), Shutovs, Artjoms (1x), Straka, Zdenek (1x), Korzun, Viktor Valerievich (1x), Morrow, Wolff (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 9.O-O 9.Bb2 9.cxd5 9.a4
<1800 21 90% 5% — —
1800-2200 496 84% 15% 0% 0%
2200-2600 1555 87% 12% 0% 0%
2600+ 153 88% 12% — —
Évolution par décennie (% des parties)
Décennie N parties 9.O-O 9.Bb2 9.cxd5 9.a4
1940s 1 100% — — —
1950s 5 80% 20% — —
1960s 6 83% 17% — —
1970s 6 83% 17% — —
1980s 4 100% — — —
1990s 93 92% 5% 1% —
2000s 499 92% 7% 0% —
2010s 1117 85% 14% 0% —
2020s 584 82% 17% 0% 1%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
9.O-O 85% 82% ▼ -3.3%
9.Bb2 14% 17% ▲ +2.8%
9.cxd5 0% 0% -0.0%
9.a4 0% 1% ▲ +0.7%
Joueurs célèbres
Champions du monde dans cette position
Kramnik, Vladimir — 6 parties
Anand, Viswanathan — 5 parties
Carlsen, Magnus — 4 parties
Ding, Liren — 4 parties
Kasparov, Garry — 2 parties
Karpov, Aleksandr — 1 partie
Karpov, Anatoly — 1 partie
Parties historiques
9.O-O — 86.3% (1997 parties)
1949 — Najdorf, Miguel vs Alonso-Lej De Las Casas, Fernando — 1-0 — Buenos Aires ch ARG
1951 — Kluger, Gyula vs Negyesy, Gyorgy — 1/2-1/2 — Hungary ch
1952 — Najdorf, Miguel vs Cobo Arteaga, Eldis — 1-0 — Havana CUB
1953 — Livshin, Iosif vs Klavins, Janis — 0-1 — Leningrad RUS
1958 — Stoere, Thor vs Krebs, H. — 0-1 — CCOL3 final 5861
9.Bb2 — 13.0% (301 parties)
1957 — Tsvetkov, Alexandar K vs Valchanov, Mihail — 1-0 — Sofia BUL
1966 — Horberg, Bengt-Eric vs Werle, Allan — 1-0 — Malmo SWE
1974 — Fedder, Steen vs Neckar, Lubomir — 1-0 — Teesside ENG
1990 — Erikalov, Alexey vs Vidonyak, Roman — 1-0 — Simferopol UKR
1992 — Votava, Jan vs Hlavnicka, Jiri — 1/2-1/2 — Policka Policka CZE
9.cxd5 — 0.3% (8 parties)
1997 — Juarez, Alberto vs Hoffman, Alejandro — 0-1 — It (open)
2008 — Skembris, Simon Max vs Katzourakis, Pavlos — 1-0 — Kallithea Halkidiki GRE
2010 — Koch, Hans-Georg vs Grube, Frank — 1/2-1/2 — ?
2010 — Deutsch, Eyal vs Bykhovsky, Avigdor — 0-1 — Petah Tikva
2014 — Hannesson, Sigurður Örn vs Prati, Alessandro — 1/2-1/2 — ICCF
9.a4 — 0.2% (4 parties)
2020 — Simplina, Arthur vs Krakovský, Peter — 1/2-1/2 — ICCF
2020 — Korzun, Viktor Valerievich vs Morrow, Wolff — 1/2-1/2 — ICCF
2021 — Peiró Aparisi, Josep vs Ozen, Bahadir — 1/2-1/2 — ICCF
2021 — Shutovs, Artjoms vs Straka, Zdenek — 1/2-1/2 — ICCF