A05s — KIA
1.Nf3 Nf6 2.g3 g6 3.Bg2 Bg7 4.O-O
Eval: [+0.17]
Les coups candidats
Ambassadeurs : Gutman, Lev (112x), Bilek, Istvan (75x), Badea, Bela (50x), Gyorkos, Lajos (41x), Forintos, Gyozo V (40x), Foisor, Cristina-Adela (37x), Meier, Georg (37x), Ghasi, Ameet K (35x)
4…d5 — 4.4% (1299 parties)
Ambassadeurs : Rosino, Antonio (7x), Fogarasi, Tibor (6x), Egger, Thomas (5x), Pribyl, Josef (4x), Kirov, Nino (4x), Fernandez Garcia, Jose Luis(2) (4x), Gutman, Leni (4x), Ederer, Karel (4x)
4…d6 — 3.5% (1040 parties)
Ambassadeurs : Lutzenberger, Reimund (3x), Sarquis, Maria Belen (3x), Benderac, Srdjan (3x), Wood, Ben A (3x), Kubik, Michael (3x), Horvath, Reka (3x), Eidelson, Rakhil (3x), Kadin Young (2x)
4…c5 — 2.5% (737 parties)
Ambassadeurs : Kashlinskaya, Alina (4x), Chadwick, Charles (3x), Vlassov, Nikolai (3x), Chernyak, Viktoria (3x), Perez Cameselle, Francisco Jose (3x), Castaldi, Vincenzo (2x), Bilek, Istvan (2x), Portisch, Lajos (2x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 4…O-O 4…d5 4…d6 4…c5
<1800 889 84% 6% 6% 4%
1800-2200 10657 88% 5% 4% 3%
2200-2600 11874 91% 4% 2% 2%
2600+ 282 91% 5% 1% 3%
Évolution par décennie (% des parties)
Décennie N parties 4…O-O 4…d5 4…d6 4…c5
1860s 1 100%
1920s 3 67% 33%
1930s 7 100%
1940s 44 91% 2% 7%
1950s 599 92% 3% 2% 2%
1960s 798 94% 2% 2% 2%
1970s 1077 92% 3% 3% 1%
1980s 1518 92% 3% 2% 2%
1990s 6040 90% 3% 4% 2%
2000s 7097 88% 4% 5% 3%
2010s 10012 89% 5% 3% 3%
2020s 2578 89% 5% 2% 3%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4…O-O 89% 89% ▲ +0.7%
4…d5 5% 5% -0.2%
4…d6 3% 2% ▼ -0.9%
4…c5 3% 3% +0.4%
Joueurs célèbres
Champions du monde dans cette position
Botvinnik, Mikhail — 10 parties
Tal, Mikhail — 10 parties
Smyslov, Vladimir — 10 parties
Kasparov, Garry — 10 parties
Gukesh D — 10 parties
Ding, Liren — 9 parties
Ju, Wenjun — 8 parties
Carlsen, Magnus — 6 parties
Anand, Viswanathan — 4 parties
Kramnik, Vladimir — 4 parties
Euwe, Max — 1 partie
Parties historiques
4…O-O — 89.4% (26607 parties)
1924 — Steiner, Endre vs Norman, George — 1-0 — Hastings Town Hall
1925 — Koenig, Imre vs Havasi Arthur — 1/2-1/2 — Budapest HUN
1935 — Najdorf, Miguel vs Tartakower, Savielly — 1-0 — Torun m
1936 — Ragozin, Viacheslav vs Chekhover, Vitaly — 1/2-1/2 — Tournament, Leningrad RUS
1936 — Concepcion Villegas, Bryan Uriel vs Bolbochan, J. — 1/2-1/2 — Mar del Plata ARG
4…d5 — 4.4% (1299 parties)
1865 — Jobin, Gilles vs Murray, Andre — 1-0 — Montreal CAN
1950 — Book, Eero vs Nestler, Vincenzo — 1-0 — Dubrovnik CRO
1951 — Barcza, Gedeon vs Koberl, Ferenc — 1-0 — Hungary ch
1952 — Anagnostou, Ioannis vs Morel, Fernand — 1/2-1/2 — Helsinki olm
1952 — Botvinnik, Mikhail vs O'Kelly, Albéric de Galway — 1-0 — Budapest HUN
4…d6 — 3.5% (1040 parties)
1946 — Kramer, Haije vs Tummers — 1-0 — Leiden NED
1952 — Leepin, Peter vs Mueller, Paul — 1-0 — Basel SUI
1952 — Lange, Wilfried vs Fred, Aatos — 1/2-1/2 — Helsinki olm
1952 — Plater, Kazimierz vs Larocca Muller, Paolo — 1-0 — Helsinki olm
1953 — Bruentrup, Dieter vs Dittmann, Sieghart — 1-0 — Brandenburg/Havel
4…c5 — 2.5% (737 parties)
1923 — Réti, Richard vs Muffang, André — 1/2-1/2 — Margate ENG
1942 — Pelikan, Jan vs Concepcion Villegas, Bryan Uriel — 1-0 — Mar del Plata ARG
1942 — Barcza, Gedeon vs Rellstab, Ludwig Sr — 0-1 — Munich GER
1949 — Benko, Pal vs Simagin, Vladimir — 1/2-1/2 — Budapest HUN
1950 — Castaldi, Vincenzo vs Aabel Thomas Eapen — 0-1 — Hastings ENG