E62q - 8.d5 - Fianchetto, Spassky (1956)

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E62q — Fianchetto, Spassky (1956)
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 Nc6 7.O-O Bf5 8.d5
Les coups candidats
8…Na5 — 96.9% (1418 parties)
Ambassadeurs : Westerinen, Heikki M.J. (13x), Hvenekilde, Jorgen (11x), Rasik, Vitezslav (8x), Szekely, Peter (7x), Grivas, Efstratios (7x), Podgaets, Mikhail (5x), Fedorowicz, John (5x), Murey, Jacob (5x)
8…Nb8 — 1.9% (28 parties)
Ambassadeurs : Xu, Jun (1x), Mencinger, Vojko (1x), Thiele, Heinz (1x), Schloetterer, Hermann (1x), Beck, Hartmuth (1x), Mittelberger, Peter (1x), Bastidas Rodriguez, Emilio (1x), Izquierdo, Patricio (1x)
8…Ne5 — 0.6% (9 parties)
Ambassadeurs : Vukic, Milan (1x), Masic, Ljubomir (1x), Danov, Vladimir (1x), Majorovas, Vitalijus (1x), Hatz, Alexander (1x), Rudolph, Anna (1x), Szamos, Alexander (1x), Cierny, Lubomir (1x)
8…Nb4 — 0.5% (8 parties)
Ambassadeurs : Quinn, Mark (1x), Slivinskas, Mindaugas (1x), Sleich, Jan (1x), Walek, Milan (1x), Lahner, Jakub (1x), Baier, Pavel (1x), Tiengo, Davide (1x), Maestri, Roberto (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 8…Na5 8…Nb8 8…Ne5 8…Nb4
<1800 39 87% 10% 3% —
1800-2200 383 95% 3% 1% 1%
2200-2600 922 98% 1% 0% 0%
2600+ 21 100% — — —
Évolution par décennie (% des parties)
Décennie N parties 8…Na5 8…Nb8 8…Ne5 8…Nb4
1950s 3 100% — — —
1960s 41 98% — 2% —
1970s 30 100% — — —
1980s 41 95% 2% 2% —
1990s 152 95% 4% — 1%
2000s 294 96% 2% 1% 1%
2010s 735 97% 2% 1% 0%
2020s 167 99% 1% — —
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
8…Na5 97% 99% ▲ +2.1%
8…Nb8 2% 1% ▼ -1.2%
8…Ne5 1% 0% ▼ -0.5%
8…Nb4 0% 0% -0.4%
Joueurs célèbres
Champions du monde dans cette position
Karpov, Anatoly — 2 parties
Botvinnik, Mikhail — 1 partie
Ju, Wenjun — 1 partie
Parties historiques
8…Na5 — 96.9% (1418 parties)
1955 — Lebedev, Boris vs Borisenko, Georgy K — 0-1 — Riga LAT
1956 — Korchnoi, Viktor vs Alexander Tadala — 1/2-1/2 — Leningrad ch-URS
1957 — Portisch, Lajos vs Kozma, Julius — 1-0 — Reykjavik ol stud tt
1961 — Hoad, PC. vs Tarjan, G. — 1-0 — British ch
1962 — Cuellar, Mario Exequiel vs Fischer, Robert J — 0-1 — Stockholm izt
8…Nb8 — 1.9% (28 parties)
1987 — Xu, Jun vs Mencinger, Vojko — 1/2-1/2 — Portoroz / Ljubljana
1992 — Beck, Hartmuth vs Mittelberger, Peter — 0-1 — Hartberg Semifinale
1996 — Thiele, Heinz vs Schloetterer, Hermann — 1-0 — Bayern
1997 — Zanobini, A. vs Togni, Giampiero — 0-1 — Rome ITA
1998 — Bastidas Rodriguez, Emilio vs Izquierdo, Patricio — 1-0 — Latacunga
8…Ne5 — 0.6% (9 parties)
1969 — Vukic, Milan vs Masic, Ljubomir — 1/2-1/2 — Novi Travnik
1983 — Danov, Vladimir vs Majorovas, Vitalijus — 0-1 — Moscow RUS
2001 — Hatz, Alexander vs Rudolph, Anna — 1-0 — GER
2003 — Szamos, Alexander vs Cierny, Lubomir — 1/2-1/2 — Salgotarjan
2009 — Dobosz, Henryk vs Martaler, Jewgeni — 1-0 — Deizisau GER
8…Nb4 — 0.5% (8 parties)
1993 — Sleich, Jan vs Walek, Milan — 0-1 — Luhacovice CZE
1994 — Quinn, Mark vs Slivinskas, Mindaugas — 1-0 — Szeged HUN
2002 — Lahner, Jakub vs Baier, Pavel — 1-0 — Moravia
2006 — Stursa, Jan vs Cernik, Lukas — 0-1 — Czech Republic
2009 — Tiengo, Davide vs Maestri, Roberto — 1-0 — Udine