C55l - 4.d4 - Two Knights Defense, Open Variation (1901)

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C55l — Two Knights Defense, Open Variation (1901)
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d4
Les coups candidats
Ambassadeurs : Hector, Jonny (36x), Okhotnik, Vladimir (27x), Zelcic, Robert (25x), Kratochvíl, Jan (20x), Moody, David W (17x), Sorokin, Mikhail (17x), Sveshnikov, Evgeny (16x), Tzermiadianos, Andreas (15x)
4…Nxe4 — 3.3% (373 parties)
Ambassadeurs : Fishler, Dov (5x), Acuna, Nelson David (3x), Barsalou, Norm (2x), Charest, Johanne (2x), ? (2x), Blohm, David (2x), Sanguinetti, George (2x), Macura, Emil (2x)
4…d6 — 2.5% (288 parties)
Ambassadeurs : Fishler, Dov (7x), Glawischnig, Armin (2x), Knuedel, Torben (2x), Novak, Ivan (1x), Kosina, Vladimir (1x), Noradounghian, Georges (1x), Ioannides, Milton (1x), Wall, Alejandro (1x)
4…Bd6 — 1.0% (110 parties)
Ambassadeurs : Holoubkova, Kamila (2x), Doll, Johannes (2x), Kinzel, Anton (1x), Siveri, Armando (1x), Cayford, Anthony (1x), Zalys, Ignas (1x), Stoughton, J. (1x), Weiss, Martin (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 4…exd4 4…Nxe4 4…d6 4…Bd6
<1800 1036 85% 5% 5% 2%
1800-2200 4552 93% 3% 1% 1%
2200-2600 2581 99% 1% 1% 0%
2600+ 42 100% — — —
Évolution par décennie (% des parties)
Décennie N parties 4…exd4 4…Nxe4 4…d6 4…Bd6
1950s 154 91% 5% — 1%
1960s 316 96% 2% 1% —
1970s 428 96% 2% 1% —
1980s 679 95% 3% 1% 0%
1990s 2459 88% 4% 4% 1%
2000s 3255 89% 4% 3% 1%
2010s 2924 91% 3% 2% 1%
2020s 1204 94% 2% 2% 1%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4…exd4 91% 94% ▲ +2.3%
4…Nxe4 3% 2% ▼ -1.5%
4…d6 2% 2% +0.4%
4…Bd6 1% 1% +0.4%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 6 parties
Ju, Wenjun — 3 parties
Kramnik, Vladimir — 1 partie
Carlsen, Magnus — 1 partie
Parties historiques
4…exd4 — 90.8% (10363 parties)
1950 — Koberl, Ferenc vs Foltys, Jan — 0-1 — Schiavno Zdroj
1950 — Wesingi, Uno vs Anderson, Frank Ross — 0-1 — Toronto CAN
1950 — Koska, Josef vs Florian, Tibor — 1-0 — Brno CZE
1950 — Honfi, Karoly vs Sebestyen, Balazs — 0-1 — Budapest HUN
1950 — Pogats, Jozsef Jr. vs Gawliczek, Andreas — 1-0 — Schiavno Zdroj
4…Nxe4 — 3.3% (373 parties)
1950 — Gresser, Gisela Kahn vs Langos, Jozsa — 1-0 — Moscow RUS
1951 — Prins, Lodewijk vs Almgren, Sven — 0-1 — Hollywood, CA
1953 — Jacobs, Robert Merton vs Geller, Adam — 1-0 — Hollywood, CA
1954 — Camara, Helder vs Detthow, Bo — 1/2-1/2 — Sao Palu ch BRA
1955 — Kozma, Edmund vs Tepper, Marcel — 1-0 — Stary Smokovec SVK
4…d6 — 2.5% (288 parties)
1962 — Noradounghian, Georges vs Ioannides, Milton — 1-0 — Varna BUL
1965 — Novak, Ivan vs Kosina, Vladimir — 1-0 — Klasterec nad Orlici
1969 — Wall, Alejandro vs Tauber, Andre — 1-0 — Los Angeles, CA USA
1972 — Amposta, Brent Michael vs Logue, J. — 1-0 — USA-ch M121 corr
1976 — Lepine, Robert vs Ellefsen, Johan Hendrik — 0-1 — Haifa ISR
4…Bd6 — 1.0% (110 parties)
1958 — Cayford, Anthony vs Zalys, Ignas — 0-1 — Montreal CAN
1959 — Kinzel, Anton vs Siveri, Armando — 1-0 — Reggio Emilia ITA
1989 — Stoughton, J. vs Weiss, Martin — 1-0 — Grand Rapids op
1992 — Fishler, Dov vs Akkoc, Can Mete — 1-0 — Dublin IRL
1992 — Llaneza Vega, Patricia vs Rodriguez Alonso, Ruben — 0-1 — Asturias