C87d - 9.Nxd4 - Closed, Averbakh (1903)

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C87d — Closed, Averbakh (1903)
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 d6 7.Bxc6+ bxc6 8.d4 exd4 9.Nxd4
Les coups candidats
9…Bd7 — 92.5% (322 parties)
Ambassadeurs : Romanishin, Oleg M (15x), Kholmov, Ratmir D (8x), Sokolov, Ivan (8x), Petrosian, Arshak B (4x), Harikrishna, Pentala (4x), Shamkovich, Leonid (3x), Giorgadze, Gabriel (3x), Adams, Michael (3x)
9…Bb7 — 3.7% (13 parties)
Ambassadeurs : Brady, Wallace (1x), Rekhsan Vlad (1x), Bobras, Piotr (1x), Polkowski, Piotr (1x), Hadraba, Vladimir (1x), Ziabari, Morteza (1x), Siero, Paul (1x), Keizers, Paul (1x)
9…c5 — 2.6% (9 parties)
Ambassadeurs : Nielsen, Gunnar (1x), Hulgaard, Herluf (1x), Gupta R S (1x), Zhamsaran (1x), Gudmundsson, Kristjan (1x), Lauri, Joseph (1x), Marez, Sébastien (1x), Jiménez de Velasco Mazarío, Juan Ignacio (1x)
9…Bg4 — 0.9% (3 parties)
Ambassadeurs : Gaprindashvili, Nona (1x), Kushnir, Alla (1x), Kononenko, Dmitry (1x), Sitnikov, Ivan A (1x), Richter, Wolfgang (1x), Van Damme, Liban (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 9…Bd7 9…Bb7 9…c5 9…Bg4
<1800 12 83% 17% — —
1800-2200 72 90% 8% 1% —
2200-2600 183 96% 1% 2% 1%
2600+ 30 100% — — —
Évolution par décennie (% des parties)
Décennie N parties 9…Bd7 9…Bb7 9…c5 9…Bg4
1950s 2 — — 100% —
1960s 16 94% — — 6%
1970s 17 94% — 6% —
1980s 17 94% — — —
1990s 35 94% 6% — —
2000s 109 94% 5% 1% 1%
2010s 107 93% 4% 3% 1%
2020s 45 91% 4% 4% —
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
9…Bd7 93% 91% ▼ -1.4%
9…Bb7 4% 4% ▲ +0.7%
9…c5 3% 4% ▲ +1.6%
9…Bg4 1% 0% ▼ -0.9%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 2 parties
Anand, Viswanathan — 1 partie
Parties historiques
9…Bd7 — 92.5% (322 parties)
1960 — Christiansen, Johannes vs Nergard, Ole-Kristian — 0-1 — ?
1960 — Seth BC vs De Cardenas, Raul — 1/2-1/2 — Leipzig GER
1960 — Yanofsky, Harry vs Szabo, Stefan — 1-0 — Winnipeg CAN
1962 — Keres, Paul Petrovich vs Spassky, Boris Vasily — 1/2-1/2 — Leningrad RUS
1963 — Ciocaltea, Victor vs Kholmov, Ratmir D — 1/2-1/2 — Sochi RUS
9…Bb7 — 3.7% (13 parties)
1997 — Bobras, Piotr vs Polkowski, Piotr — 1-0 — Augustow
1999 — Brady, Wallace vs Rekhsan Vlad — 1/2-1/2 — ?
2000 — Hadraba, Vladimir vs Ziabari, Morteza — 1-0 — Plzen CZE
2001 — Short, Nigel D vs Van Riemsdijk, Marius — 1-0 — Sao Paulo BRA
2004 — Siero, Paul vs Keizers, Paul — 1/2-1/2 — Haarlem NED
9…c5 — 2.6% (9 parties)
1956 — Nielsen, Gunnar vs Hulgaard, Herluf — 1-0 — Denmark ch corr
1956 — Gupta R S vs Zhamsaran — 1-0 — ?
1973 — Gudmundsson, Kristjan vs Lauri, Joseph — 1-0 — Teesside ENG
2007 — Marez, Sébastien vs Jiménez de Velasco Mazarío, Juan Ignacio — 1-0 — ICCF
2011 — Van Riemsdijk, Herman C. vs Santos, Julio Cesar — 1-0 — Opatija CRO
9…Bg4 — 0.9% (3 parties)
1966 — Gaprindashvili, Nona vs Kushnir, Alla — 1/2-1/2 — Moscow RUS
2008 — Kononenko, Dmitry vs Sitnikov, Ivan A — 1-0 — Poltava UKR
2016 — Richter, Wolfgang vs Van Damme, Liban — 1/2-1/2 — ICCF