D75d - 8…Na6 - Neo-Gruenfeld (1939)

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D75d — Neo-Gruenfeld (1939)
1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.Nf3 O-O 6.cxd5 Nxd5 7.O-O c5 8.dxc5 Na6
Les coups candidats
9.Ng5 — 64.9% (227 parties)
Ambassadeurs : Navarovszky, Laszlo (5x), Benko, Pal (4x), Wojtkiewicz, Aleksander (4x), Rokhlin, Yakov G (3x), Estrin, Yakov (3x), Uhlmann, Wolfgang (3x), Gutman, Lev (3x), Olafsson, Fridrik (3x)
9.c6 — 21.1% (74 parties)
Ambassadeurs : Karasev, Vladimir (2x), Shamkovich, Leonid (1x), Yudovich, Mikhail Jr (1x), Bakonyi, Elek (1x), Negyesy, Gyorgy (1x), Mednis, Edmar J (1x), Santasiere, Anthony (1x), Gliksman, Darko (1x)
9.e4 — 4.6% (16 parties)
Ambassadeurs : Hajtun, Jozsef (1x), Honfi, Karoly (1x), Holmes, HD. (1x), Cafferty, Bernard (1x), Philippe, Georges (1x), Lehmann, Heinz (1x), Sahovic, Dragutin (1x), Kirpichnikov, Vladimir (1x)
9.a3 — 2.3% (8 parties)
Ambassadeurs : Pingitzer, Harald (1x), Neubauer, Martin (1x), Bolduc, Steve (1x), Lacroix, Serge (1x), Yudin, Ivan (1x), Kotlyar, Kirill (1x), Pang, Tao (1x), Poh, Yu Tian (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 9.Ng5 9.c6 9.e4 9.a3
<1800 7 57% — 14% —
1800-2200 70 51% 31% 6% 6%
2200-2600 175 67% 19% 4% 2%
2600+ 7 100% — — —
Évolution par décennie (% des parties)
Décennie N parties 9.Ng5 9.c6 9.e4 9.a3
1950s 33 64% 15% 6% —
1960s 45 71% 16% 2% —
1970s 25 68% 20% 4% —
1980s 46 76% 15% 7% —
1990s 55 69% 20% 4% 4%
2000s 62 66% 26% 3% —
2010s 65 58% 26% 3% 5%
2020s 19 26% 32% 16% 16%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
9.Ng5 58% 26% ▼ -32.1%
9.c6 26% 32% ▲ +5.4%
9.e4 3% 16% ▲ +12.7%
9.a3 5% 16% ▲ +11.2%
Joueurs célèbres
Champions du monde dans cette position
Botvinnik, Mikhail — 1 partie
Parties historiques
9.Ng5 — 64.9% (227 parties)
1951 — Barda, Olaf vs Tsvetkov, Aleksandar — 1-0 — Marianske Lazne zt
1954 — Benko, Pal vs Navarovszky, Laszlo — 1-0 — Hungary ch
1954 — Miguel, Nahuel vs Pachman, Ludek — 1-0 — 11th Olympiad final A
1954 — Larsen, Bent Ravn vs Salo, Toivo — 1-0 — Amsterdam olm
1954 — Hajtun, Jozsef vs Szily, Jozsef — 1-0 — Hungary ch
9.c6 — 21.1% (74 parties)
1950 — Wade, Robert G vs Pachman, Ludek — 0-1 — Venice ITA
1952 — Bakonyi, Elek vs Negyesy, Gyorgy — 0-1 — Hungary ch
1953 — Hoenlinger, Baldur vs Unzicker, Ferdinand, Dr. — 0-1 — Leipzig GER
1956 — Bergraser, Volf vs Bhaskar Jyoti Koch — 0-1 — corr Wch2
1957 — Mednis, Edmar J vs Santasiere, Anthony — 1/2-1/2 — Cleveland, OH USA
9.e4 — 4.6% (16 parties)
1953 — Hajtun, Jozsef vs Honfi, Karoly — 0-1 — ?
1955 — Philippe, Georges vs Lehmann, Heinz — 0-1 — Luxembourg
1965 — Holmes, HD. vs Cafferty, Bernard — 0-1 — Hastings ch-BCF
1978 — Sahovic, Dragutin vs Kirpichnikov, Vladimir — 1-0 — Jurmala LAT
1983 — Heilemann, Manfred vs Steinhardt, Luca — 0-1 — RLN
9.a3 — 2.3% (8 parties)
1993 — Bolduc, Steve vs Lacroix, Serge — 1-0 — Asbestos CAN
1995 — Pingitzer, Harald vs Neubauer, Martin — 0-1 — AUT-chT2O 9495
2010 — Yudin, Ivan vs Kotlyar, Kirill — 0-1 — Rybinsk
2015 — Kazmaier, Daniel vs Yam, Alex — 0-1 — Calgary CAN
2019 — Pang, Tao vs Poh, Yu Tian — 1-0 — Penang MAS