E04c — Open (1938)
1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 dxc4 5.Nf3 Nbd7
Les coups candidats
6.O-O — 63.6% (793 parties)
Ambassadeurs : Leniart, Arkadiusz (13x), Ghimpu, Samuel-Timotei (6x), Rashkovsky, Nukhim N (5x), Meijers, Viesturs (5x), Korchnoi, Viktor (4x), Nikitin, Georgy (4x), Gormally, Daniel W (4x), Faleg, Alberto (3x)
Ambassadeurs : Huebner, Robert (2x), Huelsmann, Josef (2x), Romero Serrate, Ignacio (2x), Simunek, Filip (2x), Ivekovic, Tihana (2x), Abanin, Vladimir (1x), Abhinaya Polaka (1x), Vukic, Milan (1x)
6.Nbd2 — 9.3% (116 parties)
Ambassadeurs : Vukic, Milan (3x), Schneider, Lars-Ake (3x), Aadhitha Karikalan (2x), Zilberstein, Valery I (2x), Van Dop, Arend (2x), Baumgartner, Walter (1x), Sanchez, Luis Alejandro (1x), Enklaar, Bert (1x)
6.Qc2 — 3.5% (44 parties)
Ambassadeurs : Eretova, Kveta (1x), Zolmanova, Marcela (1x), Riha, Vaclav (1x), Krajina, Ales (1x), Scholseth, Tor Kristian (1x), Paldanius, Pekka (1x), Melzer, Oliver (1x), Wagner, Bernd (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 6.O-O 6.Qa4 6.Nbd2 6.Qc2
<1800 51 59% 22% 8% 10%
1800-2200 377 56% 28% 7% 5%
2200-2600 648 69% 15% 9% 3%
2600+ 38 79% 5% 5% —
Évolution par décennie (% des parties)
Décennie N parties 6.O-O 6.Qa4 6.Nbd2 6.Qc2
1950s 28 54% 21% 18% —
1960s 20 50% 25% 25% —
1970s 49 57% 14% 29% —
1980s 94 70% 11% 17% 2%
1990s 144 53% 26% 15% 2%
2000s 195 59% 28% 8% 3%
2010s 303 59% 25% 8% 5%
2020s 413 73% 11% 4% 5%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
6.O-O 59% 73% ▲ +13.7%
6.Qa4 25% 11% ▼ -14.2%
6.Nbd2 8% 4% ▼ -4.0%
6.Qc2 5% 5% +0.2%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 3 parties
Carlsen, Magnus — 2 parties
Gukesh D — 2 parties
Karpov, Anatoly — 1 partie
Kasparov, Garry — 1 partie
Kramnik, Vladimir — 1 partie
Hou, Yifan — 1 partie
Parties historiques
6.O-O — 63.6% (793 parties)
1950 — Milev, Zdravko vs Karastoichev, Emil — 1-0 — Sofia BUL
1950 — Sandor, Bela vs Kluger, Gyula — 1/2-1/2 — Budapest HUN
1951 — Fine, Reuben vs Eken, Max — 0-1 — New York, NY USA
1952 — Miguel, Nahuel vs Eliskases, Erich — 1/2-1/2 — Havana CUB
1952 — Shamkovich, Leonid vs Reshko, Aron — 1-0 — Tula RUS
6.Qa4 — 19.4% (242 parties)
1951 — Macskasy, Elod vs Kapu, Jeno — 0-1 — ?
1952 — Eliskases, Erich vs Prins, Lodewijk — 1-0 — Stockholm izt
1952 — Vukovic, Sava vs Djaja, Dragutin — 1-0 — Belgrade SRB
1956 — Feuerstein, Arthur vs Elter, Sophia — 1/2-1/2 — New York, NY USA
1957 — Abanin, Vladimir vs Abhinaya Polaka — 1/2-1/2 — Leningrad RUS
6.Nbd2 — 9.3% (116 parties)
1950 — Najdorf, Rafael vs Haj Amor Houssem — 1-0 — The Golden Treasury of Chess
1951 — Gereben, Erno vs Gadalinski, Jan — 1-0 — Sopot
1951 — Taimanov, Mark vs Kotlerman, S. — 1-0 — Baku AZE
1955 — Sturm, Martin vs Secchi, Eduardo — 0-1 — cr.
1958 — Roth, Rolf vs Aadhitha Karikalan — 1/2-1/2 — San Benedetto
6.Qc2 — 3.5% (44 parties)
1983 — Eretova, Kveta vs Zolmanova, Marcela — 1/2-1/2 — Sumperk
1985 — Riha, Vaclav vs Krajina, Ales — 1-0 — Karvina
1991 — Scholseth, Tor Kristian vs Paldanius, Pekka — 1-0 — Helsinki op Helsinki FIN
1994 — Melzer, Oliver vs Wagner, Bernd — 0-1 — GER
1999 — Jirka, Jiri vs Talla, Vladimir — 1/2-1/2 — Czechia