A29x - 4…d5 5.cxd5 Nxd5 6.Bg2 Nb6 7.O-O Be7 8.Rb1 - Four Knights

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A29x — Four Knights
1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 d5 5.cxd5 Nxd5 6.Bg2 Nb6 7.O-O Be7 8.Rb1
Eval: [+0.12]
Les coups candidats
8…a5 — 49.7% (548 parties)
Ambassadeurs : Bartsch, Reinhard Andrea (9x), Zhak, Boris (7x), Farias, Sergio Roberto Alves (6x), Czebe, Attila (5x), Romanishin, Oleg M (5x), Karjakin, Sergey (5x), Salzmann, Stefan (5x), Sarno, Spartaco (4x)
8…O-O — 28.2% (311 parties)
Ambassadeurs : Zhak, Boris (6x), Scherer, Max (5x), Azmaiparashvili, Zurab (3x), Miezis, Normunds (3x), Morozevich, Alexander (3x), Tiviakov, Sergei (3x), Grant, Jonathan I M (3x), Donnenfeld, Patrice (3x)
8…Be6 — 9.3% (103 parties)
Ambassadeurs : Palac, Mladen (4x), Maroroa Jones, Gawain C B (3x), Gurevich, Mikhail (2x), Motzer, Heinrich, Dr. (2x), Romanishin, Oleg M (2x), Abramov, Sergey Pavlovich (2x), Kratochvíl, Jan (2x), Krakovský, Peter (2x)
8…g5 — 6.7% (74 parties)
Ambassadeurs : Karpatchev, Aleksandr (5x), Hector, Jonny (3x), Serper, Grigory (2x), Korchnoi, Viktor (2x), Bareev, Evgeny (2x), Degerman, Lars (2x), Andersen, Daniel (2x), Mickevicius, Juras (2x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 8…a5 8…O-O 8…Be6 8…g5
<1800 5 60% — 20% 20%
1800-2200 274 47% 34% 9% 5%
2200-2600 681 52% 27% 9% 7%
2600+ 71 55% 15% 10% 8%
Évolution par décennie (% des parties)
Décennie N parties 8…a5 8…O-O 8…Be6 8…g5
1980s 2 — 100% — —
1990s 163 29% 40% 9% 9%
2000s 250 38% 38% 8% 11%
2010s 556 56% 23% 12% 5%
2020s 131 75% 14% 4% 2%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
8…a5 56% 75% ▲ +19.2%
8…O-O 23% 14% ▼ -9.6%
8…Be6 12% 4% ▼ -7.9%
8…g5 5% 2% ▼ -2.9%
Joueurs célèbres
Champions du monde dans cette position
Kasparov, Garry — 2 parties
Ding, Liren — 1 partie
Kramnik, Vladimir — 1 partie
Parties historiques
8…a5 — 49.7% (548 parties)
1992 — Adorjan, Andras vs Cebalo, Miso — 1/2-1/2 — Polanica Zdroj POL
1993 — Hansen, Lars Bo vs Romanishin, Oleg M — 1/2-1/2 — Polanica Zdroj POL
1993 — Kamp, Christoph vs Lanzendoerfer, Johannes — 1/2-1/2 — GER-ch qgA17 9395
1993 — Jeute, Volkmar Peter vs Pampa, Andreas — 1-0 — Germany ch-32 prel-17 9395
1993 — Pevzner, Albert vs Schwartzman, Gabriel — 0-1 — Groningen NED
8…O-O — 28.2% (311 parties)
1984 — Hjorth, Gunnar vs Morovic Fernandez, Ivan — 1/2-1/2 — Thessaloniki GRE
1989 — Shirazi, Kamran vs Benjamin, Joel — 1-0 — Philadelphia, PA USA
1991 — Sorokin, Maksim vs Savon, Vladimir — 1/2-1/2 — Chelyabinsk RUS
1991 — Shvedchikov, Anatoli I. vs Olbrich, Joachim — 1-0 — Moscow RUS
1992 — Adorjan, Andras vs Lin, Weiguo — 0-1 — Shenzhen
8…Be6 — 9.3% (103 parties)
1991 — Adorjan, Andras vs Acevedo Sanchez, Jose Ignacio — 1-0 — Manila PHI
1993 — Anderson, Gordon M vs Poppe, Mia — 1/2-1/2 — ?
1993 — Hodgson, Jeremy K vs Romanishin, Oleg M — 1/2-1/2 — Belgrade SRB
1993 — Hodgson, Julian M vs Romanishin, Oleg M — 1/2-1/2 — Belgrade SRB
1994 — Baginskaite, Kamile vs Erneste, Inguna — 1/2-1/2 — GER
8…g5 — 6.7% (74 parties)
1993 — Serper, Grigory vs Korchnoi, Viktor — 0-1 — Groningen NED
1993 — Hodgson, Julian M vs Bareev, Evgeny — 1/2-1/2 — Belgrade SRB
1993 — Hodgson, Jeremy K vs Bareev, Evgeny — 1/2-1/2 — Belgrade SRB
1993 — Curtacci, Sergio vs Baumgartner, Walter — 1/2-1/2 — cr.
1993 — Serper, Grigory vs Korchnoi, Viktor — 0-1 — Groningen NED