A33n - 6…Bc5 - Symmetrical, Two Knights (1954)

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A33n — Symmetrical, Two Knights (1954)
1.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Nc6 6.g3 Bc5
Les coups candidats
7.Nb3 — 87.6% (418 parties)
Ambassadeurs : Hulak, Krunoslav (10x), Parma, Bruno (9x), Sosonko, Gennadi (7x), Polugaevsky, Lev (6x), Korchnoi, Viktor (5x), Smejkal, Jan (5x), Ivkov, Borislav (5x), Langeweg, Kick (4x)
7.e3 — 5.0% (24 parties)
Ambassadeurs : Kolbak, Jens (1x), Dinsen, Carl Krarup (1x), Berg, Klaus (1x), Hansen, Curt (1x), Zieher, Uwe (1x), Lindemann, Stefan (1x), Browne, Walter Shawn (1x), Ljubojevic, Ljubomir (1x)
7.Nxc6 — 2.5% (12 parties)
Ambassadeurs : Byrne, Brendan (1x), Dowling, Jamie (1x), Nei, Mati (1x), Haapasalo, Jukka-Pekka (1x), Luksza, Arkadiusz (1x), Bolduc, Steve (1x), Margolin, Dmitrij (1x), Abalian, Evgenia (1x)
7.Nc2 — 1.9% (9 parties)
Ambassadeurs : Marschner, Juergen (1x), Wegner, Hannu (1x), Egeli, Per Ove (1x), Dahl, Ingrid (1x), Lubczynski, Rafal (1x), Gritsak, Orest (1x), Soysal, Serkan (1x), Firat, Burak (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 7.Nb3 7.e3 7.Nxc6 7.Nc2
<1800 21 67% 10% 5% 10%
1800-2200 108 81% 6% 6% 4%
2200-2600 250 92% 3% 1% 1%
2600+ 25 96% 4% — —
Évolution par décennie (% des parties)
Décennie N parties 7.Nb3 7.e3 7.Nxc6 7.Nc2
1950s 3 100% — — —
1960s 6 83% 17% — —
1970s 55 98% 2% — —
1980s 85 92% 6% — 1%
1990s 79 86% 8% 3% 1%
2000s 95 83% 7% 4% —
2010s 110 88% 3% 3% 5%
2020s 44 77% 2% 7% 5%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
7.Nb3 88% 77% ▼ -10.9%
7.e3 3% 2% -0.5%
7.Nxc6 3% 7% ▲ +4.1%
7.Nc2 5% 5% +0.0%
Joueurs célèbres
Champions du monde dans cette position
Hou, Yifan — 3 parties
Tal, Mikhail — 2 parties
Kasparov, Garry — 1 partie
Parties historiques
7.Nb3 — 87.6% (418 parties)
1953 — Furman, Semyon vs Nezhmetdinov, Rashid — 1-0 — Leningrad RUS
1954 — Bisguier, Arthur B vs Petrosian, Tigran V. — 1-0 — New York, NY USA
1955 — Furman, Semyon vs Petrosian, Tigran V. — 1/2-1/2 — Moskou ch-URS
1967 — Smyslov, Vasily vs Matulovic, Milan — 1-0 — Palma de Majorca ESP
1968 — Czerniak, Moshe vs Tringov, Georgi P — 0-1 — Athens GRE
7.e3 — 5.0% (24 parties)
1963 — Kolbak, Jens vs Dinsen, Carl Krarup — 1/2-1/2 — ?
1975 — Browne, Walter Shawn vs Ljubojevic, Ljubomir — 1/2-1/2 — Milan ITA
1980 — Smejkal, Jan vs Langeweg, Kick — 1/2-1/2 — Amsterdam NED
1981 — Berg, Klaus vs Hansen, Curt — 1/2-1/2 — Copenhagen DEN
1981 — Zieher, Uwe vs Lindemann, Stefan — 1/2-1/2 — RLN 8081
7.Nxc6 — 2.5% (12 parties)
1991 — Nei, Mati vs Haapasalo, Jukka-Pekka — 1/2-1/2 — Thessaloniki GRE
1998 — Byrne, Brendan vs Dowling, Jamie — 1-0 — Ireland
2002 — Margolin, Dmitrij vs Abalian, Evgenia — 1-0 — St Petersburg RUS
2003 — Luksza, Arkadiusz vs Bolduc, Steve — 0-1 — Laval CAN
2006 — Fadin, Evgeny vs Polyansky, Viktor — 1/2-1/2 — Voronezh RUS
7.Nc2 — 1.9% (9 parties)
1986 — Marschner, Juergen vs Wegner, Hannu — 0-1 — Duitsland tt
1992 — Egeli, Per Ove vs Dahl, Ingrid — 0-1 — Arnold Cup Gausdal NOR
2011 — Blagojevic, Marijan vs Curic, Drazen — 0-1 — Zagreb CRO
2012 — Jantz, Heiko vs Friedrich, Johannes — 1-0 — Troisdorf
2013 — Lubczynski, Rafal vs Gritsak, Orest — 1/2-1/2 — Legnica POL