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C41y — Improved Hanham (1957)
1.e4 e5 2.Nf3 d6 3.d4 Nf6 4.Nc3 Nbd7 5.Bc4 Be7 6.O-O O-O 7.Re1 c6 8.a4 a5
Les coups candidats
9.h3 — 62.1% (2149 parties)
Ambassadeurs : Plat, Vojtech (30x), Lazic, Miroljub (21x), Biti, Ozren (20x), Neuman, Petr (18x), Ostovic, Matija (14x), Lubczynski, Rafal (14x), Kostanjsek, Zorko (13x), Nevednichy, Vladislav (13x)
9.b3 — 17.7% (611 parties)
Ambassadeurs : Lazic, Miroljub (9x), Plat, Vojtech (7x), Mitkov, Nikola (5x), Oratovsky, Michael (5x), Leks, Maria (5x), Shirov, Alexei (5x), Voyska, Margarita (4x), Luukkonen, Tommi (4x)
9.Ba2 — 13.9% (480 parties)
Ambassadeurs : Miltner, Arndt (7x), Berg, Michael E (7x), Lubczynski, Rafal (6x), Neuman, Petr (5x), Sliwicka, Alicja (4x), Horvath, Julia (3x), Shabanov, Yuri (3x), Manouck, Thierry (3x)
9.Bg5 — 2.5% (87 parties)
Ambassadeurs : Plat, Vojtech (2x), Lapham, William (1x), Bell, Harry (1x), Rosen, Willy (1x), Freder, Heinrich (1x), Pachow, Joerg (1x), Pedersen, Steffen (1x), Goldgewicht, Lionel (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 9.h3 9.b3 9.Ba2 9.Bg5
<1800 61 59% 16% 8% 5%
1800-2200 1019 63% 16% 11% 3%
2200-2600 2240 61% 19% 15% 2%
2600+ 89 65% 19% 16% —
Évolution par décennie (% des parties)
Décennie N parties 9.h3 9.b3 9.Ba2 9.Bg5
1950s 1 — 100% — —
1960s 4 25% — 75% —
1970s 10 60% 30% — —
1980s 21 81% 10% 5% 5%
1990s 198 57% 9% 22% 6%
2000s 832 52% 25% 16% 3%
2010s 2023 64% 17% 13% 2%
2020s 370 75% 10% 11% 1%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
9.h3 64% 75% ▲ +10.2%
9.b3 17% 10% ▼ -6.8%
9.Ba2 13% 11% ▼ -1.9%
9.Bg5 2% 1% ▼ -1.2%
Joueurs célèbres
Champions du monde dans cette position
Hou, Yifan — 2 parties
Anand, Viswanathan — 1 partie
Kasparov, Garry — 1 partie
Carlsen, Magnus — 1 partie
Ju, Wenjun — 1 partie
Parties historiques
9.h3 — 62.1% (2149 parties)
1969 — Schweber, Samuel vs Guimard, Carlos E — 1/2-1/2 — Villa Gesell ARG
1970 — Honfi, Karoly vs Llado Lumbera, Jaime — 1-0 — Kapfenberg etc
1974 — Ivkov, Borislav vs Planinec, Albin — 1/2-1/2 — Amsterdam NED
1974 — Tukmakov, Vladimir B vs Planinec, Albin — 1-0 — Amsterdam NED
1977 — Kurajica, Bojan vs Planinec, Albin — 1/2-1/2 — Ljubljana
9.b3 — 17.7% (611 parties)
1957 — Troianescu, Octav vs Orbaan, Constant — 1/2-1/2 — Wageningen zt
1975 — Timman, Jan H vs Miguel, Nahuel — 1-0 — ?
1975 — Timman, Jan H vs Miguel, Nahuel — 1-0 — Netanya ISR
1977 — Chow, Robert vs Vigier, Gerry — 1-0 — Vancouver BC CAN
1984 — Norgaard, Jesper vs Nielsen, Poul Erik — 0-1 — ?
9.Ba2 — 13.9% (480 parties)
1963 — Ciocaltea, Victor vs Vaisman, Volodia — 1-0 — Bucharest ROU
1963 — Penrose, Justin vs Llado, J. — 1-0 — Enschede zt
1964 — Matanovic, Aleksandar vs Udovcic, Mijo — 1-0 — Pula CRO
1989 — Rodriguez Cespedes, Amador vs Brunner, Lucas — 1/2-1/2 — Lucerne SUI
1991 — Luther, Thomas vs Lutz, Christopher — 1/2-1/2 — GER
9.Bg5 — 2.5% (87 parties)
1985 — Lapham, William vs Bell, Harry — 1/2-1/2 — Seattle, WA USA
1992 — Rasmussen, Casper vs Bentzen, Eric — 0-1 — Norresundby
1993 — Pachow, Joerg vs Pedersen, Steffen — 0-1 — Katowice op Katowice POL
1994 — Hassan, Sayed Barakat vs Barua, Dibyendu — 0-1 — Moscow RUS
1994 — Bus, Mariusz vs Wesolowski, Tadeusz — 1-0 — Polanica Zdroj POL