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A29e — Four Knights (1969)
1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 Bb4
Les coups candidats
Ambassadeurs : Zielinski, Sergej (94x), Uhlmann, Wolfgang (42x), Belchev, Branimir Petrov (39x), Portych, Václav (32x), Tsenkov, Ljubomir (24x), Beck, Georges (24x), Kleinsorgen, Horst (18x), Chorfi, Khaled (16x)
Ambassadeurs : Portych, Václav (40x), Svoboda, Frantisek (30x), Karpov, Anatoly (16x), Lautier, Joel (13x), McNab, Colin A (10x), Korchnoi, Viktor (9x), Gheorghiu, Florin (9x), Uhlmann, Wolfgang (8x)
5.Qc2 — 1.0% (79 parties)
Ambassadeurs : Klaetschke, Stefan (3x), Bak, Karol (2x), Seebauer, Alois (2x), Abramov, Roman (1x), Neukirch, Detlef (1x), Lief, Adam (1x), Rachels, Stuart (1x), Van Wonterghem, G. (1x)
5.a3 — 0.4% (35 parties)
Ambassadeurs : Van de Bosch (1x), De Coninck, Cedric (1x), Jonovic, Velibor (1x), Christensen, Bo Garner (1x), Campbell, Brett (1x), Southam, David (1x), Maruniak, M. (1x), Bayer, Dorota (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 5.Bg2 5.Nd5 5.Qc2 5.a3
<1800 467 81% 15% 2% 1%
1800-2200 2591 79% 19% 1% 1%
2200-2600 2852 74% 25% 1% 0%
2600+ 329 64% 36% — —
Évolution par décennie (% des parties)
Décennie N parties 5.Bg2 5.Nd5 5.Qc2 5.a3
1950s 1 100% — — —
1960s 18 94% — 6% —
1970s 392 79% 19% 1% —
1980s 502 70% 28% 2% 0%
1990s 1265 79% 19% 1% 1%
2000s 2107 77% 20% 1% 1%
2010s 2775 80% 19% 1% 0%
2020s 729 70% 28% 1% —
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
5.Bg2 80% 70% ▼ -9.4%
5.Nd5 19% 28% ▲ +9.5%
5.Qc2 1% 1% +0.2%
5.a3 0% 0% -0.4%
Joueurs célèbres
Champions du monde dans cette position
Kasparov, Garry — 10 parties
Karpov, Anatoly — 10 parties
Anand, Viswanathan — 10 parties
Tal, Mikhail — 6 parties
Carlsen, Magnus — 5 parties
Kramnik, Vladimir — 4 parties
Smyslov, Vladimir — 3 parties
Ding, Liren — 3 parties
Botvinnik, Mikhail — 1 partie
Ju, Wenjun — 1 partie
Parties historiques
5.Bg2 — 77.4% (6031 parties)
1959 — Petrosian, Tigran A. vs Keres, Paul Petrovich — 1/2-1/2 — Bled SLO
1961 — Uusi, Gunnar vs Kampenuss, Peteris — 0-1 — Riga LAT
1961 — Bielicki, Carlos vs Behrensen, Jorge — 1-0 — Balcarce
1962 — Eliskases, Erich vs Smyslov, Vasily — 1/2-1/2 — Mar del Plata ARG
1962 — Portisch, Lajos vs Filip, Miroslav — 1-0 — Varna olm
5.Nd5 — 20.7% (1609 parties)
1970 — Petrosian, Tigran V. vs Liebert, Heinz — 1-0 — Siegen olm
1971 — Timman, Jan H vs Bisguier, Arthur B — 0-1 — Malaga Malaga ESP
1971 — Petrosian, Tigran V. vs Ree, Hans — 1-0 — Wijk aan Zee NED
1971 — Petrosian, Tigran A. vs Ree, Hans — 1-0 — Wijk aan Zee NED
1971 — Baumbach, Friedrich, Dr. vs Schmidt, Hermann — 1/2-1/2 — Strausberg
5.Qc2 — 1.0% (79 parties)
1969 — Abramov, Roman vs Neukirch, Detlef — 1/2-1/2 — Schwedt
1976 — Goulet, Serge vs Sasseville, Jean — 0-1 — Shawinigan CAN
1977 — Jankovec, Ivan vs Bak, Karol — 0-1 — Decin CZE
1979 — Stoppel, Franz vs Dueckstein, Andreas — 0-1 — Vienna AUT
1986 — Lief, Adam vs Rachels, Stuart — 1/2-1/2 — USA-chJ
5.a3 — 0.4% (35 parties)
1989 — Van de Bosch vs De Coninck, Cedric — 1/2-1/2 — corr Netherlands
1991 — Siefert, Ulrich vs Burkhardt, Tobias — 1/2-1/2 — Hauenstein
1992 — Campbell, Brett vs Southam, David — 0-1 — Toronto CAN
1995 — Mueller, Carolin vs Pulver, Kristin — 1-0 — Leipzig GER
1996 — Maruniak, M. vs Bayer, Dorota — 0-1 — Augustow