A68b - 8…O-O 9.Bd3 - Four Pawns [+0.00]

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A68b — Four Pawns
1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.f4 Bg7 8.Nf3 O-O 9.Bd3
Eval: [+0.00]
Les coups candidats
9…Re8 — 38.6% (523 parties)
Ambassadeurs : Blackstone, John (4x), Subrt, Jaroslav (4x), Van der Hoeven, John F (4x), Elwood, David (4x), Karelin, Evgeny Petrovich (3x), Traczyk, Pawel (3x), Munoz, Claudia (3x), Wood, Baruch (2x)
9…b5 — 17.9% (243 parties)
Ambassadeurs : Wood, Baruch (3x), Nobrega, Adaucto Wanderley (2x), Skara, Vladimir (2x), Ang, Alphaeus Wei Ern (2x), Yuzhakov, Oleg (2x), Van der Linden, Willem (2x), Da Silva, Anderson Batista Brum (2x), Vogel, Ralf (2x)
9…Bg4 — 15.1% (204 parties)
Ambassadeurs : Bousios, Hristos (4x), Platonov, Igor V (2x), Schmelmer, Anni (2x), Moody, David W (2x), Williams, Stephen M (2x), Cutmore, David A (2x), Doknjas, John (2x), Levesque, Thomas (2x)
9…a6 — 14.2% (193 parties)
Ambassadeurs : Gereben, Erno (2x), Hain, Christian (2x), Porsgaard, Per Lykke (2x), Iwanziw, Niklas (2x), Gulinina, Nadezhda (2x), Wood, Baruch (1x), Medina-Garcia, Antonio (1x), Abadia Castillo, Mateo (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 9…Re8 9…b5 9…Bg4 9…a6
<1800 63 43% 10% 22% 13%
1800-2200 663 39% 16% 14% 17%
2200-2600 183 32% 26% 21% 10%
2600+ 1 — — 100% —
Évolution par décennie (% des parties)
Décennie N parties 9…Re8 9…b5 9…Bg4 9…a6
1920s 4 — — — —
1930s 2 50% — — 50%
1940s 11 9% 18% — 9%
1950s 26 31% 38% 8% 4%
1960s 34 26% 41% — 9%
1970s 40 22% 20% 8% 15%
1980s 66 47% 18% 18% 5%
1990s 266 38% 18% 16% 15%
2000s 430 42% 13% 16% 16%
2010s 403 39% 18% 15% 15%
2020s 73 34% 29% 21% 10%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
9…Re8 39% 34% ▼ -4.7%
9…b5 18% 29% ▲ +10.7%
9…Bg4 15% 21% ▲ +5.7%
9…a6 15% 10% ▼ -5.8%
Joueurs célèbres
Champions du monde dans cette position
Euwe, Max — 3 parties
Parties historiques
9…Re8 — 38.6% (523 parties)
1935 — Olexa, Vilem vs Pelikan, Jorge — 0-1 — Luhacovice CZE
1948 — Wood, Baruch vs Henneberke, Frans — 1-0 — Beverwijk NED
1954 — Marsalek, Josef vs Delmar, Gabriel — 1-0 — Jablonec nad Nisou
1955 — Segi, Lajos vs Lukic, Arsenije — 1-0 — Novi Sad SRB
1956 — Shainswit, George vs Feuerstein, Arthur — 0-1 — New York, NY USA
9…b5 — 17.9% (243 parties)
1949 — Wood, Beau vs Evans Lianda — 1/2-1/2 — Hastings ENG
1949 — Wood, Baruch vs Rellstab, Ludwig — 0-1 — Oldenburg GER
1952 — Moiseev, Oleg vs Tolush, Alexander V — 0-1 — Moscow RUS
1955 — Kretschmer, Marcel vs Malich, Burkhard, Dr. — 0-1 — Zittau
1956 — Sojka, Adam vs Vukovic Zupan, Luka — 1/2-1/2 — Krynica POL
9…Bg4 — 15.1% (204 parties)
1958 — Platonov, Igor V vs Stoliarov, L eonid — 1/2-1/2 — ?
1958 — Platonov, Igor V vs Stoliarov, L. — 1/2-1/2 — Kiev UKR
1974 — Bjel Norbert J vs Boyd, Stephen — 1/2-1/2 — ?
1975 — Berndt, Klaus vs Pfretzschner, Roland — 1-0 — corr DDR-JFSM
1975 — Hesse, Kurt, Dr. vs Schroeter, Wolfgang — 1-0 — Hamburg GER
9…a6 — 14.2% (193 parties)
1936 — Abadia Castillo, Mateo vs Guilarte Vinuesa, Julio — 0-1 — Mar del Plata ARG
1947 — Wood, Baruch vs Medina-Garcia, Antonio — 0-1 — Gijon
1953 — Carvalho Da Costa, Fabiano vs Bolbochan, J. — 1/2-1/2 — Mar del Plata ARG
1961 — Aloni, Itzchak vs Yosha, Avshalom — 1-0 — Tel Aviv ISR
1961 — Dubinin, Peter vs Arseniev, Artem — 0-1 — USSR