D34j - 10.Na4 - Tarrasch Defense: Classical Variation, Réti Variation (1920)

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D34j — Classical Variation, Réti Variation (1920)
1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 Nf6 7.Bg2 Be7 8.O-O O-O 9.dxc5 Bxc5 10.Na4
Les coups candidats
10…Be7 — 90.0% (1330 parties)
Ambassadeurs : Priehoda, Vitezslav (5x), Petursson, Margeir (4x), Morgado, Juan Sebastian (4x), Gligoric, Sofija (4x), Hulak, Krunoslav (4x), Hort, Vlastimil (4x), Lein, Anatoly (3x), Bertok, Mario Jr. (3x)
10…Bd6 — 6.2% (91 parties)
Ambassadeurs : Morin, Louis (6x), Desforges, Jean (5x), Halkias, Stelios (4x), Berezhnoy, Viktor (1x), Zamkovskaya, Violetta Aleks (1x), Martinez, Jean-Francois (1x), Pelts, Roman (1x), Jauregui, Carlos (1x)
10…Bb6 — 3.5% (52 parties)
Ambassadeurs : Zamyshlyaev, Anatoly (3x), Bertok, Mario Jr. (2x), Antunac, Goran (2x), Keres, Paul (1x), Stein, Leonid (1x), Keres, Paul Petrovich (1x), Bukic, Enver (1x), Lutovac, Maksim (1x)
10…Bb4 — 0.3% (4 parties)
Ambassadeurs : Flores Alvarez, Rodrigo (1x), Jobim, Marcos Vinicios De Azevedo (1x), Heino, Hannu (1x), Hoijarvi, Kari (1x), Vlasov, Andrey (1x), Dantas, Artur F C Pinto (1x), Bourgois, Bastien (1x), Richard, Francois (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 10…Be7 10…Bd6 10…Bb6 10…Bb4
<1800 44 82% 14% 2% 2%
1800-2200 519 89% 8% 2% 0%
2200-2600 746 92% 5% 4% —
2600+ 24 92% 4% 4% —
Évolution par décennie (% des parties)
Décennie N parties 10…Be7 10…Bd6 10…Bb6 10…Bb4
1950s 6 100% — — —
1960s 35 69% 3% 26% 3%
1970s 55 91% — 9% —
1980s 114 85% 6% 8% 1%
1990s 158 93% 4% 3% —
2000s 237 92% 5% 3% —
2010s 717 90% 8% 2% 0%
2020s 156 90% 6% 3% —
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
10…Be7 90% 90% +0.0%
10…Bd6 8% 6% ▼ -1.1%
10…Bb6 2% 3% ▲ +1.4%
10…Bb4 0% 0% -0.3%
Joueurs célèbres
Champions du monde dans cette position
Ding, Liren — 1 partie
Parties historiques
10…Be7 — 90.0% (1330 parties)
1950 — Soluch, Leopold vs Michel, Paul — 1-0 — Vienna AUT
1952 — Lizarraga Martin, Jose Ignacio vs Marchisotti Eduardo — 0-1 — ?
1953 — Anay Barche vs Stoltz, Gösta — 1/2-1/2 — Bucharest ROU
1955 — Corbijn, Juan vs Abreu, Marcio Marques — 0-1 — corr ch-ARG
1956 — Porreca, Alessio vs Castiglioni, Andre Lazzari — 1-0 — corr Italy
10…Bd6 — 6.2% (91 parties)
1963 — Berezhnoy, Viktor vs Zamkovskaya, Violetta Aleks — 1/2-1/2 — Kiev UKR
1983 — Martinez, Jean-Francois vs Morin, Louis — 0-1 — Montreal CAN
1983 — Pelts, Roman vs Jauregui, Carlos — 1/2-1/2 — Toronto CAN
1984 — Desforges, Jean vs Morin, Louis — 1-0 — Montreal CAN
1984 — Desforges, Jean vs Morin, Louis — 0-1 — Montreal CAN
10…Bb6 — 3.5% (52 parties)
1960 — Johansson, Martin 1979 vs Alves, Peterson Reinan — 1/2-1/2 — Olympiad final B
1962 — Kholmov, Ratmir D vs Baumbach, Friedrich, Dr. — 1/2-1/2 — Bucharest ROU
1963 — Bukic, Enver vs Lutovac, Maksim — 1-0 — Zenica BIH
1963 — Balcerowski, Witold vs Fronczek, Heinrich — 0-1 — Glucholazy ch POL
1964 — Bertok, Mario Jr. vs Teschner, Rudolf — 1-0 — Reggio Emilia ITA
10…Bb4 — 0.3% (4 parties)
1960 — Flores Alvarez, Rodrigo vs Jobim, Marcos Vinicios De Azevedo — 1-0 — Sao Paulo zt
1989 — Heino, Hannu vs Hoijarvi, Kari — 1/2-1/2 — JSM KSY-SSK
2012 — Vlasov, Andrey vs Dantas, Artur F C Pinto — 1-0 — ICCF
2014 — Bourgois, Bastien vs Richard, Francois — 1/2-1/2 — Rennes FRA