A47j - 3…Bb7 (1925)

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A47j —
1.d4 Nf6 2.Nf3 b6 3.Bf4 Bb7
Les coups candidats
Ambassadeurs : Olejarczyk, Bogdan (8x), Birsa, Valter (5x), Grachev, Boris (5x), Gombocz, Ferenc Jr. (5x), Gasanov, Eldar (5x), Sarosy, Zoltan L (4x), Sengupta (4x), Romih, Max (3x)
4.Nbd2 — 14.1% (251 parties)
Ambassadeurs : Rathbone-Jones, Ifan (4x), Romih, Max (3x), Gasic, Bozidar (2x), Ravia, Mosi (2x), Tregler, Boris (1x), Golombek, Harry (1x), Sandor, Bela (1x), Kramer, Haije (1x)
4.h3 — 4.0% (71 parties)
Ambassadeurs : Benesch, Heribert (3x), Szirmai, Eduard (2x), Todorovic, Goran N (2x), Prohaszka, Peter (2x), Bottino, Cesare (1x), Pieterse, Gert (1x), Davies, Natasha Trinity (1x), King, Eduard Norman (1x)
4.c4 — 1.5% (27 parties)
Ambassadeurs : Krstulovic, Alex (4x), Vodicka, Milan (2x), Jácome Jiménez, Abel (2x), Echenique, Agustin (1x), Polnarieva, Larisa (1x), Husek, Zdenek (1x), Ujvari, Laszlo (1x), Brauener, Jonathan (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 4.e3 4.Nbd2 4.h3 4.c4
<1800 147 78% 16% 3% 1%
1800-2200 787 80% 15% 3% 1%
2200-2600 626 79% 11% 7% 2%
2600+ 13 92% — — 8%
Évolution par décennie (% des parties)
Décennie N parties 4.e3 4.Nbd2 4.h3 4.c4
1950s 12 50% 50% — —
1960s 16 88% 6% — —
1970s 33 79% 21% — —
1980s 75 91% 4% 4% 1%
1990s 235 78% 17% 4% 0%
2000s 318 72% 25% 2% 0%
2010s 694 83% 11% 4% 2%
2020s 392 77% 10% 7% 3%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4.e3 83% 77% ▼ -6.0%
4.Nbd2 11% 10% ▼ -0.6%
4.h3 4% 7% ▲ +3.0%
4.c4 2% 3% ▲ +1.7%
Joueurs célèbres
Champions du monde dans cette position
Kasparov, Garry — 2 parties
Hou, Yifan — 2 parties
Ju, Wenjun — 1 partie
Parties historiques
4.e3 — 78.9% (1400 parties)
1952 — Romih, Max vs Eugenio, Sarah De Oliveira — 0-1 — Ferrara
1952 — Romih, Max vs Magrin, Antonio — 1-0 — Ferrara
1954 — Bauza, Lorenzo vs Miguel, Nahuel — 1/2-1/2 — Montevideo URU
1956 — Alexander, Ken R D vs Serebrisky, Alexander S — 1-0 — Kiev UKR
1956 — Romih, Max vs Magrin, Antonio — 1/2-1/2 — ITA-ch18 Rovigo
4.Nbd2 — 14.1% (251 parties)
1951 — Romi vs Gay, Alessandro — 1-0 — Venice ch
1951 — Romih, Max vs Eugenio, Sarah De Oliveira — 0-1 — Venice ITA
1952 — Romih, Max vs Baldanello, Mario — 1-0 — Ferrara
1953 — Otto, Arnold vs Buchholz, Werner — 1-0 — Jena GER
1954 — Romih, Max vs Nikolac, Juraj — 1-0 — Sirmione ITA-YUG
4.h3 — 4.0% (71 parties)
1981 — Davies, Natasha Trinity vs King, Eduard Norman — 1-0 — Morecambe ch-BCF
1984 — Bottino, Cesare vs Pieterse, Gert — 0-1 — Caorle ITA
1985 — Hesse, Peter vs Enders, Peter — 0-1 — GDR-ch Jueterborg GER
1991 — Kienholz, Gerfried vs Komarov, Dimitri — 0-1 — Huy op
1993 — Tatenhorst, Volker vs Teske, Henrik — 1/2-1/2 — Wichern op Hamburg GER
4.c4 — 1.5% (27 parties)
1983 — Echenique, Agustin vs Polnarieva, Larisa — 1/2-1/2 — Krasnodar RUS
1997 — Husek, Zdenek vs Ujvari, Laszlo — 1-0 — HUN
2007 — Brauener, Jonathan vs Hansen, Henrik Damgaard — 1/2-1/2 — Copenhagen DEN
2012 — Garcia Otero, Pedro 1997 vs Pindado Campos, Raul — 0-1 — Madrid ESP
2015 — Tsagarakis, Angelo vs Rossiter, Philip J — 1/2-1/2 — Auckland NZL