A56u - 3.d5 e5 4.Nc3 d6 5.e4 Be7 6.Bd3 - Czech

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A56u — Czech
1.d4 Nf6 2.c4 c5 3.d5 e5 4.Nc3 d6 5.e4 Be7 6.Bd3
Eval: [+1.25]
Les coups candidats
6…O-O — 55.9% (1050 parties)
Ambassadeurs : Ciocaltea, Victor (6x), Foglar, Stanislav (5x), Skembris, Spyridon (5x), Dlugy, Maxim (5x), Paoli, Enrico (4x), Sahovic, Dragutin (4x), Zahilas, Loukas N. (4x), Segal, Alexandru Sorin (4x)
6…Nbd7 — 36.5% (686 parties)
Ambassadeurs : Coudari, Camille (12x), Khazankin, Moisei (5x), Finegold, Benjamin (5x), Mayer, Steven F. (4x), Gheorghiu, Florin (4x), Miladinovic, Igor (4x), Gorse, Gerard (4x), Puroila, Sippo (4x)
6…a6 — 4.0% (76 parties)
Ambassadeurs : Ciocaltea, Victor (3x), Dominguez Aguilar, Guillermo (2x), Nicholas, Geoffrey James (1x), Andersson, Ulf (1x), Bisguier, Arthur B (1x), Panno, Oscar (1x), Jankovec, Ivan (1x), Ryc, Ivo (1x)
6…Na6 — 1.9% (35 parties)
Ambassadeurs : Ary Claudio (1x), Mendes, Silvio Luiz Teixeira (1x), Neis, Dieter (1x), Ungnad, Rainer (1x), Hernandez, Gustavo (1x), Cuellar Gacharna, Miguel (1x), Hasenberg, Wilfried (1x), Landolfi, Franco (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 6…O-O 6…Nbd7 6…a6 6…Na6
<1800 32 50% 38% 6% 3%
1800-2200 621 53% 39% 3% 3%
2200-2600 797 52% 42% 4% 1%
2600+ 14 50% 43% 7% —
Évolution par décennie (% des parties)
Décennie N parties 6…O-O 6…Nbd7 6…a6 6…Na6
1930s 3 67% — — —
1950s 24 92% 4% 4% —
1960s 107 76% 12% 9% 2%
1970s 99 75% 22% 2% 1%
1980s 118 72% 23% 3% 1%
1990s 372 61% 33% 3% 2%
2000s 532 52% 40% 5% 2%
2010s 547 45% 47% 3% 2%
2020s 76 46% 42% 8% 3%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
6…O-O 45% 46% ▲ +0.7%
6…Nbd7 47% 42% ▼ -5.2%
6…a6 3% 8% ▲ +5.2%
6…Na6 2% 3% ▲ +0.6%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 1 partie
Euwe, Max — 1 partie
Parties historiques
6…O-O — 55.9% (1050 parties)
1938 — Gotti, Marco vs Raizman, Maurice — 0-1 — Nice FRA
1939 — Podolny, Grigory Abramovich vs Panov, Vasily — 0-1 — Moscow RUS
1950 — Ghionzoli Soloviev, Leonardo vs Panov, Vasily — 1-0 — Moscow-ch Moscow RUS
1951 — Gadalinski, Jan vs Sebestyen, Bela — 0-1 — Sopot
1952 — Taimanov, Mark vs Kasparian, Genrikh — 1-0 — Moskou ch-URS
6…Nbd7 — 36.5% (686 parties)
1958 — Simagin, Vladimir vs Vatnikov, Josif E — 1-0 — Moscow RUS
1966 — Rauch, Joseph Lyon vs Coudari, Camille — 0-1 — Montreal CAN
1967 — Gersho, Jack vs Coudari, Camille — 1-0 — Montreal CAN
1967 — Frymer vs Coudari, Camille — 0-1 — Fitchburg
1967 — Kraidman, Yair vs Smiltiner, Shlomo — 1-0 — Israel
6…a6 — 4.0% (76 parties)
1955 — Bisguier, Arthur B vs Panno, Oscar — 0-1 — Buenos Aires ARG
1965 — Soos, Bela vs Partos, Charles — 1/2-1/2 — Bucharest ROU
1966 — Colon Romero, Miguel vs Ornithopoulos, Nikolaos — 0-1 — La Habana olm prel
1966 — Donner, Jan-Hein vs Gralka, Julian — 1-0 — Groningen NED
1966 — Colon Cortegoso, Marta vs Ciocaltea, Victor — 0-1 — Havana CUB
6…Na6 — 1.9% (35 parties)
1960 — Ary Claudio vs Mendes, Silvio Luiz Teixeira — 1-0 — ?
1968 — Neis, Dieter vs Ungnad, Rainer — 0-1 — Saarbruecken
1973 — Hernandez, Gustavo vs Cuellar Gacharna, Miguel — 0-1 — Caracas Caracas VEN
1989 — Hasenberg, Wilfried vs Landolfi, Franco — 1/2-1/2 — ?
1992 — Walzl, Martin vs Csatari, Mariann — 1/2-1/2 — Balatonbereny open