A47o - 3.e3 Bb7 4.Bd3 (1921)

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A47o —
1.d4 Nf6 2.Nf3 b6 3.e3 Bb7 4.Bd3
Les coups candidats
Ambassadeurs : Laustsen, Karl-Johan (4x), Nestler, Vincenzo (3x), Vunder, Andrey (3x), Riha, Peter (3x), Makarczyk, Kazimierz (2x), Stalda, Giuseppe (2x), Kupper, Josef (2x), Franzen, Jozef (2x)
4…g6 — 21.7% (259 parties)
Ambassadeurs : Doluhanova, Evgeniya (4x), Mikalsen, Erlend (3x), Hoang, Thanh Trang (3x), Ioseliani, Nana (2x), Zaitseva, Ludmila G. (2x), Hernandez Carmenate, Holden (2x), Hoi, Carsten (2x), Neumann, Joachim (2x)
4…c5 — 11.3% (135 parties)
Ambassadeurs : Golombek, Harry (5x), O'Kelly, Albéric de Galway (3x), ? (3x), Pirc, Vasja (2x), Sliwa, Bogdan (2x), Hecht, Hans-Joachim (2x), Ujtelky, Maximilian (1x), Kozma, Julius (1x)
4…d6 — 6.0% (72 parties)
Ambassadeurs : Salgado, Robert R (3x), Tangborn, Eric (2x), van Muenster, Kirsten (2x), Schlieder, Rolf (1x), Seiffert, Ronny Steffen (1x), Johnsen, Henry (1x), Heim, Sverre (1x), De la Casa, Angel (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 4…e6 4…g6 4…c5 4…d6
<1800 83 63% 23% 5% 7%
1800-2200 511 61% 19% 8% 7%
2200-2600 386 46% 31% 16% 5%
2600+ 5 40% 40% 20% —
Évolution par décennie (% des parties)
Décennie N parties 4…e6 4…g6 4…c5 4…d6
1950s 34 59% — 38% 3%
1960s 15 47% 13% 33% 7%
1970s 21 67% 10% 14% 5%
1980s 50 58% 20% 16% 6%
1990s 163 61% 18% 9% 7%
2000s 316 66% 14% 8% 7%
2010s 432 53% 28% 10% 5%
2020s 161 44% 33% 13% 8%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4…e6 53% 44% ▼ -9.1%
4…g6 28% 33% ▲ +5.4%
4…c5 10% 13% ▲ +2.9%
4…d6 5% 8% ▲ +3.2%
Parties historiques
4…e6 — 57.0% (679 parties)
1950 — Primavera, Giuseppe vs Almiron, Martin Alejandro — 0-1 — Dubrovnik olm
1950 — Nestler, Vincenzo vs Bergqvist, Allan — 1-0 — Dubrovnik olm
1950 — Krause, Kurt vs Koch, Berthold — 1-0 — Soemmerda ch GDR
1950 — Soultanbeieff, Victor vs Kramer, Haije — 1-0 — Beverwijk NED
1950 — Madsen, Edward vs Pedersen, Hans — 0-1 — cr
4…g6 — 21.7% (259 parties)
1968 — Kniebihli, Louis vs Bonham, Reginald W — 0-1 — ?
1969 — Cunningham, Thomas L vs Asselin, John — 1/2-1/2 — Lincoln
1976 — Wirthensohn, Heinz vs Sloth, Jorn — 1/2-1/2 — Montana Crans
1978 — Cameron, Mark vs Perez, Marco Tulio — 1-0 — Mexico City MEX
1982 — Saacke, Bernd vs Neumann, Joachim — 1/2-1/2 — FRG-ch Bad Neuenahr
4…c5 — 11.3% (135 parties)
1950 — Pirc, Vasja vs Rossolimo, Nicolas — 1/2-1/2 — Amsterdam NED
1950 — Primavera, Giuseppe vs Ceccato, Vittorio — 0-1 — Sorrento
1950 — Nestler, Vincenzo vs Golombek, Harry — 1-0 — Venice ITA
1950 — Pirc, Vasja vs O'Kelly, Albéric de Galway — 1-0 — Amsterdam NED
1951 — Eliskases, Erich vs Bolbochan, Jacobo — 1-0 — Mar del Plata ARG
4…d6 — 6.0% (72 parties)
1951 — Schlieder, Rolf vs Seiffert, Ronny Steffen — 1/2-1/2 — Schwerin GER
1968 — Johnsen, Henry vs Heim, Sverre — 0-1 — Tromsoe
1976 — De la Casa, Angel vs Columna, Carlos — 1-0 — Haifa ISR
1980 — Salgado, Robert R vs Aegerter, Martin — 1-0 — North American
1986 — Salgado, Robert R vs Tangborn, Eric — 0-1 — NAICCC V corr