C57h - 5.exd5 b5 - Two Knights Defense, Ulvestad Variation (1941)

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C57h — Two Knights Defense, Ulvestad Variation (1941)
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 b5
Les coups candidats
6.Bf1 — 52.6% (1102 parties)
Ambassadeurs : Leisebein, Peter (24x), Wiesinger, Johann (17x), Vujosevic, Vladimir (8x), Grott, Peter (7x), Roscher, Jonathan (6x), Baer, Horst Hugo (6x), Paoli, Enrico (5x), Estrin, Yakov (5x)
6.Bxb5 — 27.4% (575 parties)
Ambassadeurs : Havlik, Jan (3x), Tumurbator, Purev (2x), Knorr, B. (2x), Adam (2x), Lau, Ralf (2x), Voracek, Miroslav (2x), Grau Ribas, Jose Maria (2x), Moller, Aage (2x)
6.dxc6 — 11.0% (231 parties)
Ambassadeurs : Hector, Jonny (2x), Leisebein, Peter (2x), Kerpel, CD. (1x), Hoogendoorn, Pank (1x), Boehnisch, Manfred (1x), Reich, Jens (1x), Burger, PJ (1x), Sweiburg (1x)
6.Bb3 — 5.9% (123 parties)
Ambassadeurs : Hunko, Gyorgy (2x), Corredor Castellanos, Camilo (2x), Martinez, A. (1x), Garcia , Efren (1x), Ocock, David (1x), Barker, Albert (1x), Truong, Anh Thu (1x), Do, Thi Diem Huong (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 6.Bf1 6.Bxb5 6.dxc6 6.Bb3
<1800 246 34% 33% 14% 13%
1800-2200 854 52% 27% 12% 6%
2200-2600 361 74% 16% 7% 1%
2600+ 5 100% — — —
Évolution par décennie (% des parties)
Décennie N parties 6.Bf1 6.Bxb5 6.dxc6 6.Bb3
1950s 21 76% 14% 10% —
1960s 36 58% 33% 8% —
1970s 67 78% 15% 4% 1%
1980s 137 66% 22% 6% 1%
1990s 463 48% 34% 11% 4%
2000s 639 45% 30% 13% 8%
2010s 521 50% 26% 13% 7%
2020s 213 70% 16% 5% 5%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
6.Bf1 50% 70% ▲ +20.5%
6.Bxb5 26% 16% ▼ -9.3%
6.dxc6 13% 5% ▼ -8.1%
6.Bb3 7% 5% ▼ -1.9%
Joueurs célèbres
Champions du monde dans cette position
Carlsen, Magnus — 2 parties
Gukesh D — 1 partie
Parties historiques
6.Bf1 — 52.6% (1102 parties)
1950 — Estrin, Yakov vs Sokolsky, Alexey — 1-0 — USSR ch corr
1950 — Heidenfeld, Wolfgang vs Bohatyrchuk, Fedir Parfenovych — 1-0 — cr.
1950 — Howland, H.W vs Campbell, Brett — 1-0 — BCCA Premier
1950 — Prins, Lodewijk vs Penrose, Justin — 0-1 — Southsea
1950 — Rossolimo, Nicolas vs Wade, Robert G — 1-0 — Venice ITA
6.Bxb5 — 27.4% (575 parties)
1953 — Edmunsson vs Magee, David — 0-1 — Nebraska
1954 — Barth, Rainer vs Lorenzen, Peer — 0-1 — FRG-2Cup sf (FS-1955)
1958 — Busch, Hans vs Behnke, Heinz — 0-1 — cr.
1962 — Baumeister, Sven vs Horberg, Bengt-Eric — 0-1 — ?
1962 — Sandin S vs Wilheim — 0-1 — ?
6.dxc6 — 11.0% (231 parties)
1951 — Kerpel, CD. vs Hoogendoorn, Pank — 1-0 — Netherlands tt
1957 — Boehnisch, Manfred vs Reich, Jens — 0-1 — Ruhla
1963 — Burger, PJ vs Sweiburg — 0-1 — cr
1964 — Burger, Karl vs Zweiburg — 0-1 — Corr cr.
1969 — Kernan, Bernard vs Schnegelsberg, Niels — 1-0 — Castlebar
6.Bb3 — 5.9% (123 parties)
1978 — Ocock, David vs Barker, Albert — 0-1 — Columbus,OH op
1987 — Martinez, A. vs Garcia , Efren — 1-0 — Albacete ESP
1990 — Adlin Merlin vs Minieri, Filippo — 1-0 — Tr Lombardia
1990 — Calero Alba, Elias vs Buyuk, Elvin Esma — 1-0 — Zaragoza
1992 — Bauer, Manfred vs Kleinschroth, Roland — 0-1 — it op Wiesbaden GER