E14z - 4…Bb7 5.Bd3 c5 6.O-O Be7 7.Nc3 cxd4 8.exd4 d5

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E14z —
1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.e3 Bb7 5.Bd3 c5 6.O-O Be7 7.Nc3 cxd4 8.exd4 d5
Les coups candidats
9.cxd5 — 80.6% (787 parties)
Ambassadeurs : Danner, Georg (11x), Yudasin, Leonid (8x), Dizdar, Goran (7x), Jussupow, Artur (7x), Hebden, Mark L (7x), Abergel, Thal (7x), Wang, Richard (6x), Prusikin, Michael (5x)
9.b3 — 7.3% (71 parties)
Ambassadeurs : Franco Ocampos, Zenon (5x), Certek, Pavel (4x), Jussupow, Artur (3x), Petrosian, Tigran V. (2x), Szabo, Ladislav (1x), Rohacek, Ivan (1x), Heinicke, Herbert (1x), Lehmann, Heinz (1x)
9.Bg5 — 4.1% (40 parties)
Ambassadeurs : Eljanov, Pavel (2x), Savon, Vladimir (1x), Tal, Mikhail (1x), Nei, Iivo (1x), Szabo, Ladislav (1x), Sandrin, Angelo (1x), Warren, Jim (1x), Udovcic, Mijo (1x)
9.Qe2 — 2.9% (28 parties)
Ambassadeurs : Adamski, Jan (2x), Mueller, Klaus (1x), Darga, Klaus (1x), Zita, Frantisek (1x), Gobert, Jozef (1x), Lee, Peter N (1x), Kolasinski, Marek (1x), Twardon, Marian (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 9.cxd5 9.b3 9.Bg5 9.Qe2
<1800 12 75% — 8% 8%
1800-2200 193 78% 7% 3% 5%
2200-2600 644 84% 7% 3% 2%
2600+ 22 77% 14% 9% —
Évolution par décennie (% des parties)
Décennie N parties 9.cxd5 9.b3 9.Bg5 9.Qe2
1940s 2 — 100% — —
1950s 17 47% 12% 12% 12%
1960s 23 57% 17% 17% 4%
1970s 26 42% 27% 12% 12%
1980s 63 63% 11% 10% 6%
1990s 148 76% 13% 3% 1%
2000s 289 84% 5% 4% 2%
2010s 350 89% 5% 1% 2%
2020s 59 81% — 7% 8%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
9.cxd5 89% 81% ▼ -7.5%
9.b3 5% 0% ▼ -4.6%
9.Bg5 1% 7% ▲ +5.9%
9.Qe2 2% 8% ▲ +6.8%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 4 parties
Karpov, Anatoly — 4 parties
Euwe, Max — 2 parties
Kramnik, Vladimir — 1 partie
Parties historiques
9.cxd5 — 80.6% (787 parties)
1953 — Szabo, Laszlo vs Euwe, Max — 1/2-1/2 — Zurich SUI
1955 — Kramer, Hanspeter vs Bouwmeester, Hans — 0-1 — Beverwijk NED
1955 — Petrosian, Tigran A. vs Keres, Paul — 1/2-1/2 — Moskou ch-URS
1955 — Darga, Klaus vs Olafsson, Fridrik — 1/2-1/2 — Hastings ENG
1955 — Ujtelky, Maximilian vs Kozma, Julius — 1/2-1/2 — Prague CZE
9.b3 — 7.3% (71 parties)
1940 — Heinicke, Herbert vs Lehmann, Heinz — 1/2-1/2 — Berlin GER
1949 — Szabo, Ladislav vs Rohacek, Ivan — 1/2-1/2 — Trencianske Teplice SVK
1955 — Szabo, Laszlo vs Unzicker, Wolfgang — 1/2-1/2 — Goteborg SWE
1955 — Platt, Josef vs Kramer, Haije — 1/2-1/2 — Mont Pelerin sur Vevey
1961 — Keres, Paul Petrovich vs Darga, Klaus — 1/2-1/2 — Bled SLO
9.Bg5 — 4.1% (40 parties)
1957 — Udovcic, Mijo vs Uhlmann, Wolfgang — 0-1 — Gotha GER
1958 — Beni, Alfred vs Darga, Klaus — 1/2-1/2 — Munich GER
1960 — Sandrin, Angelo vs Warren, Jim — 1-0 — ?
1966 — Nei, Iivo vs Szabo, Ladislav — 1/2-1/2 — Beverwijk NED
1967 — Malinin, Boris vs Gurevich, Dmitry — 1-0 — Tournament Kiev UKR
9.Qe2 — 2.9% (28 parties)
1954 — Zita, Frantisek vs Gobert, Jozef — 1-0 — BEL-CSR Brussels BEL
1959 — Mueller, Klaus vs Darga, Klaus — 1/2-1/2 — Berlin West
1963 — Adamski, Jan vs Lee, Peter N — 1-0 — Vrnjacka Banja SRB
1972 — Balogh, Bela vs Polgar, Istvan — 0-1 — HUN
1976 — Nikolac, Juraj vs Adamski, Jan — 1-0 — Lublin POL