A31j - 3…cxd4 4.Nxd4 e5 - Symmetrical, Two Knights (1955)

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A31j — Symmetrical, Two Knights (1955)
1.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e5
Les coups candidats
Ambassadeurs : Raetsky, Alexander (15x), Burnett, Jim (12x), Bellon Lopez, Juan Manuel (12x), Lesiege, Alexandre (10x), Hausner, Ivan (9x), Rogers, Ian (8x), Sykora, Robert (7x), Likavsky, Tomas (7x)
5.Nc2 — 15.9% (900 parties)
Ambassadeurs : Kovacs, Arthur Dr. (9x), Gheorghiu, Florin (6x), Julkunen, Tapio (5x), Ilincic, Zlatko (5x), Dobrotka, Martin (4x), Alexopoulos, Georgios 94 (3x), Sarfati, Jonathan D (3x), Grosar, Aljosa (3x)
5.Nf3 — 12.5% (708 parties)
Ambassadeurs : Terasti, Pasi (3x), Sertic, Rudolf (3x), Aguinaldo, Morais (3x), Jusupov, Tabris (3x), Heinola, Kari P. (2x), Mishra, Neeraj-Kumar (2x), Oliveira, Paulo Luiz (2x), Sevillano, Enrico (2x)
5.Nb3 — 6.8% (387 parties)
Ambassadeurs : Wassin, Sergej (3x), Samuelsson, Sven-Gunnar (3x), Tarkowski, Michal (3x), Fries, Elisabeth (3x), Pullen, Kent (2x), Boinowitz, Tammo (2x), Steinhardt, Lutz (2x), Whiteley, Andrew J (2x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 5.Nb5 5.Nc2 5.Nf3 5.Nb3
<1800 286 46% 11% 26% 15%
1800-2200 2402 57% 18% 16% 8%
2200-2600 2215 75% 16% 6% 3%
2600+ 26 96% 4% — —
Évolution par décennie (% des parties)
Décennie N parties 5.Nb5 5.Nc2 5.Nf3 5.Nb3
1950s 5 40% 60% — —
1960s 7 57% 14% 29% —
1970s 58 78% 12% 10% —
1980s 432 76% 12% 8% 4%
1990s 1280 65% 16% 12% 7%
2000s 1712 64% 15% 14% 7%
2010s 1817 62% 17% 13% 7%
2020s 366 63% 20% 8% 9%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
5.Nb5 62% 63% ▲ +0.9%
5.Nc2 17% 20% ▲ +3.1%
5.Nf3 13% 8% ▼ -5.2%
5.Nb3 7% 9% ▲ +1.8%
Joueurs célèbres
Champions du monde dans cette position
Kasparov, Garry — 3 parties
Karpov, Anatoly — 1 partie
Carlsen, Magnus — 1 partie
Ju, Wenjun — 1 partie
Parties historiques
5.Nb5 — 64.5% (3660 parties)
1954 — Rabar, Braslav vs Czerniak, Moshe — 0-1 — Belgrade SRB
1955 — Minev, Nikolay N vs Udovcic, Mijo — 1/2-1/2 — Zagreb CRO
1966 — Juhasz, Balazs vs Ramlow, Marcus — 1-0 — Gyongyos op
1966 — Voiculescu, Paul vs Ungureanu, Emil — 0-1 — Bucharest ROU
1968 — Bosch van Rosenthal, Edzard vs Hartoch, Robert G — 0-1 — Amsterdam NED
5.Nc2 — 15.9% (900 parties)
1954 — Scherbakoff, Georges vs Czerniak, Moshe — 1/2-1/2 — Paris FRA
1955 — Lombardy, William J vs Kevitz, Alexander — 1/2-1/2 — New York, NY USA
1959 — Fazekas, Stephan vs Aabel Thomas Eapen — 1/2-1/2 — York ch-BCF
1961 — Kraidman, Yair vs Czerniak, Moshe — 0-1 — Netanya ISR
1975 — O'sullivan, Clara vs Faber, Ab — 0-1 — Bagneaux
5.Nf3 — 12.5% (708 parties)
1961 — Porath, Yosef vs Stepak, Yedael — 1/2-1/2 — Tel Aviv ISR
1963 — Reshko, Aron vs Klaman, Konstantin Mikhailovich — 1-0 — Leningrad RUS
1973 — Pomar Salamanca, Arturo vs Furman, Semyon — 1/2-1/2 — Madrid ESP
1973 — Pomar Salamanca, Arturo vs Bellon Lopez, Juan Manuel — 0-1 — Torremolinos ESP
1975 — Novikov, Mikhail V vs Babushkin, Eduard — 0-1 — Leningrad ch-city
5.Nb3 — 6.8% (387 parties)
1982 — Riha, Vaclav vs Votruba, Pavel — 1/2-1/2 — Budapest HUN
1983 — Roehrl, Bruno vs Beikert, Guenther, Dr. — 1-0 — Buehl
1983 — Lehotzky, Attila vs Frohman, T. — 1-0 — E Detroit Motor City op
1984 — Correia, Laura Sofia Dias Lisboa vs Ferreira, Antonio — 0-1 — Guarda
1984 — Saltis, P. vs Sekulic, Dusan — 0-1 — Karditsa