A47i - 3.e3 Bb7 (1925)

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A47i —
1.d4 Nf6 2.Nf3 b6 3.e3 Bb7
Les coups candidats
Ambassadeurs : Golombek, Harry (5x), Zaitseva, Ludmila G. (5x), Nestler, Vincenzo (4x), ? (4x), Luong Phuong Hanh (4x), Hoang, Thanh Trang (4x), O'Kelly, Albéric de Galway (3x), Sliwa, Bogdan (3x)
4.Nbd2 — 12.1% (193 parties)
Ambassadeurs : Franklin, Michael J (5x), Koltanowski, George (4x), Anderson, Tamara (3x), Kovacevic, Vlatko (3x), Bergman, Carl J (2x), Cafferty, Bernard (2x), Blasco, Domenico (2x), De Loughry, Desmond (1x)
4.c4 — 7.2% (116 parties)
Ambassadeurs : Kramer, Hanspeter (2x), Sarosy, Zoltan L (2x), Mitchell, Dean (2x), Rometti Bernard (1x), Herau, Olivier (1x), Primavera, Giuseppe (1x), Fabricius, Leo (1x), Carmona Rosales, Jose Luis (1x)
4.Be2 — 6.4% (103 parties)
Ambassadeurs : Aditya Balu Jadhav (1x), Ayasofya Medina (1x), Purdy, John S (1x), Cook, Patrick (1x), Boim, Inon (1x), Rapaka Samuel Paul (1x), Glienke, Manfred, Dr. (1x), Roeder, Matthias (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 4.Bd3 4.Nbd2 4.c4 4.Be2
<1800 133 55% 14% 12% 11%
1800-2200 667 72% 10% 7% 6%
2200-2600 477 80% 7% 5% 5%
2600+ 6 83% — 17% —
Évolution par décennie (% des parties)
Décennie N parties 4.Bd3 4.Nbd2 4.c4 4.Be2
1950s 52 65% 23% 10% 2%
1960s 21 67% 19% 10% 5%
1970s 24 79% 21% — —
1980s 74 64% 30% 1% 3%
1990s 224 66% 17% 8% 5%
2000s 424 70% 13% 6% 7%
2010s 564 73% 8% 9% 7%
2020s 218 72% 6% 6% 9%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4.Bd3 73% 72% ▼ -0.9%
4.Nbd2 8% 6% ▼ -2.1%
4.c4 9% 6% ▼ -2.8%
4.Be2 7% 9% ▲ +2.2%
Parties historiques
4.Bd3 — 70.4% (1127 parties)
1950 — Primavera, Giuseppe vs Almiron, Martin Alejandro — 0-1 — Dubrovnik olm
1950 — Nestler, Vincenzo vs Bergqvist, Allan — 1-0 — Dubrovnik olm
1950 — Pirc, Vasja vs Rossolimo, Nicolas — 1/2-1/2 — Amsterdam NED
1950 — Krause, Kurt vs Koch, Berthold — 1-0 — Soemmerda ch GDR
1950 — Soultanbeieff, Victor vs Kramer, Haije — 1-0 — Beverwijk NED
4.Nbd2 — 12.1% (193 parties)
1951 — Popov, Vesselin vs Sliwa, Bogdan — 1-0 — Sopot
1951 — Otto, Arnold vs Seiffert, Ronny Steffen — 0-1 — Schwerin GER
1951 — Nestler, Daniel vs Gay, Alessandro — 0-1 — Venice ch
1953 — Koltanowski, George vs Taylor, Jack — 1-0 — Simultaneous exhibit
1954 — Poliakoff, Dmitri vs Cross, Robert Gary — 1-0 — SF/LA, CA
4.c4 — 7.2% (116 parties)
1950 — Primavera, Giuseppe vs Kramer, Hanspeter — 0-1 — Dubrovnik olm
1950 — Stenborg, Ake vs Kramer, Hanspeter — 0-1 — Dubrovnik olm
1955 — Fabricius, Leo vs Sarosy, Zoltan L — 0-1 — Toronto CAN
1956 — Hyttinen, Paul vs Sarosy, Zoltan L — 0-1 — Toronto CAN
1958 — Foster, Paul vs Bachtiar, Arovah — 0-1 — Sydney AUS
4.Be2 — 6.4% (103 parties)
1955 — Purdy, John S vs Cook, Patrick — 1-0 — Aberystwyth ch-BCF
1966 — Aditya Balu Jadhav vs Ayasofya Medina — 0-1 — Brunnen
1986 — Boim, Inon vs Rapaka Samuel Paul — 1/2-1/2 — Holon
1987 — Glienke, Manfred, Dr. vs Roeder, Matthias — 1/2-1/2 — Duitsland tt
1992 — Risch, Michel vs Loor, P. — 1-0 — Duisburg Wch U14w