C59b - 9.Nh3 - Two Knights Defense, Steinitz Variation (1923)

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C59b — Two Knights Defense, Steinitz Variation (1923)
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Na5 6.Bb5+ c6 7.dxc6 bxc6 8.Be2 h6 9.Nh3
Les coups candidats
9…Bc5 — 41.6% (497 parties)
Ambassadeurs : Krueger, Hilmar (31x), Bohak, Janko (11x), Carlsson, Ingvar (7x), Kahl, Fred (7x), Vincent, Didier (4x), Klovans, Janis (4x), Morin, Stephane (4x), Abroskin, Vladimir (3x)
9…Bd6 — 32.1% (383 parties)
Ambassadeurs : Krueger, Hilmar (12x), Timoshenko, Georgy (7x), Sergeev, Vladimir (6x), Sidenko, Anatoly Viktorovich (6x), Kahl, Fred (5x), Short, Nigel D (5x), Veinger, Itzhak (4x), Vysochin, Spartak (4x)
9…g5 — 13.8% (165 parties)
Ambassadeurs : Kosikov, Alexey I (11x), Taborov, Boris (10x), Kruppa, Yuri (9x), Shishkin, Vadim (8x), Sergeev, Vladimir (6x), Vysochin, Spartak (6x), Zsiltzova-Lisenko, Lubov (3x), Timoshenko, Georgy (3x)
9…Be7 — 4.2% (50 parties)
Ambassadeurs : Kruppa, Yuri (2x), Romanishin, Oleg M (2x), Pecka, Josef (2x), Krueger, Hilmar (2x), Cormier, Kristian (1x), Boutteville, Cesar (1x), Pyne J (1x), Tautvaisas, Povilas (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 9…Bc5 9…Bd6 9…g5 9…Be7
<1800 67 43% 28% 12% 1%
1800-2200 465 42% 35% 11% 3%
2200-2600 423 34% 32% 20% 6%
2600+ 26 19% 50% 19% 8%
Évolution par décennie (% des parties)
Décennie N parties 9…Bc5 9…Bd6 9…g5 9…Be7
1960s 15 67% 13% — 7%
1970s 34 47% 26% 9% 6%
1980s 59 64% 22% 7% 2%
1990s 176 52% 32% 5% 2%
2000s 357 38% 30% 20% 4%
2010s 447 37% 34% 16% 5%
2020s 106 38% 42% 7% 6%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
9…Bc5 37% 38% ▲ +0.6%
9…Bd6 34% 42% ▲ +8.0%
9…g5 16% 7% ▼ -9.3%
9…Be7 5% 6% ▲ +0.7%
Joueurs célèbres
Champions du monde dans cette position
Anand, Viswanathan — 1 partie
Carlsen, Magnus — 1 partie
Steinitz, Wilhelm — 1 partie
Ding, Liren — 1 partie
Parties historiques
9…Bc5 — 41.6% (497 parties)
1963 — Zuckerman, Bernard vs Tuayer, Ben — 1-0 — Budva MNE
1963 — Fischer, Robert J vs Bisguier, Arthur B — 1-0 — New York, NY USA
1963 — Fischer, Robert J vs Radojicic, Aleksandar — 1-0 — New York, NY USA
1964 — Abroskin, Vladimir vs Kibardin, Sergey — 1-0 — ?
1964 — Abroskin, Vladimir vs Krasnov, Vasiliy G. — 1-0 — Zelenograd
9…Bd6 — 32.1% (383 parties)
1964 — Veinger, Itzhak vs Zhuravlev, Georgiy — 1-0 — URS
1964 — Paoli, Enrico vs Matanovic, Aleksandar — 0-1 — Zagreb CRO
1971 — Tringov, Georgi P vs Geller, Efim P. — 1/2-1/2 — Havana CUB
1972 — Paoli, Enrico vs Lengyel, Levente — 0-1 — Toth mem Kecskemet HUN
1972 — Paoli, Enrico vs Lengyel, Levente — 0-1 — Bari ITA
9…g5 — 13.8% (165 parties)
1971 — Cserna, Laszlo vs Youssef, Pula — 0-1 — HUN
1972 — Veinger, Itzhak vs Ivanov, Vladimir — 0-1 — Leningrad RUS
1975 — Kiselev, Maksim vs Genin, Adeline — 1-0 — ?
1980 — Ahlstrom, Per vs Johansson, Krister — 1-0 — ?
1984 — Kotzem, Ernst vs Sukhinina, Anna Ivanovna — 0-1 — EU-ch35 corr
9…Be7 — 4.2% (50 parties)
1964 — Cormier, Kristian vs Boutteville, Cesar — 0-1 — Bordeaux FRA
1975 — Pyne J vs Tautvaisas, Povilas — 1/2-1/2 — Chicago, IL USA
1979 — Klaman, Konstantin Mikhailovich vs Faibisovich, Vadim Z — 0-1 — USSR
1989 — Alvarez Arandia, Juan Manuel vs Gallego, Sanchez Luis — 1-0 — ?
1992 — Ribeiro, Fernando vs Lopez, Angel — 1-0 — Candas