A43a — Old Benoni (1921)
1.d4 c5
Les coups candidats
Ambassadeurs : Szalanczi, Emil (136x), Munoz, Miguel (80x), Lenz, Juergen (79x), Van Riemsdijk, Herman C. (76x), Rahls, Peter (75x), Velimirovic, Dragoljub (56x), Velickovic, Sasa (53x), Clares Huanca, Danner Saed (48x)
Ambassadeurs : Kovacevic, Vlatko (31x), Dobos, Otto (13x), Haba, Petr (11x), Petrovic, Marija (11x), Rahls, Peter (11x), Skembris, Spyridon (9x), Kovacs, Arthur Dr. (8x), Heinola, Kari P. (7x)
Ambassadeurs : Velimirovic, Dragoljub (17x), Abel, Lajos (11x), Sikora-Lerch, Jan (10x), Piankov, Evgenij (9x), Van Riemsdijk, Herman C. (9x), Harmatosi, Jozsef (8x), Buecker, Stefan (7x), Bosque Ortega, Xavier (7x)
2.Nf3 — 7.0% (3226 parties)
Ambassadeurs : Hanken, Jerome B (6x), Honsch, Pal (6x), Hoang Canh Huan (5x), Funk, Volker (4x), Cyrus Daniel Gomes (4x), Hahn, Matthias (4x), Taksrud, Vidar (4x), Ebert, Lutz (4x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 2.d5 2.e3 2.c3 2.Nf3
<1800 3356 53% 13% 12% 12%
1800-2200 21264 61% 12% 11% 8%
2200-2600 14468 74% 8% 9% 3%
2600+ 89 82% 3% 4% 1%
Évolution par décennie (% des parties)
Décennie N parties 2.d5 2.e3 2.c3 2.Nf3
1950s 323 74% 9% 4% 3%
1960s 650 77% 6% 5% 4%
1970s 743 70% 8% 6% 8%
1980s 1791 70% 8% 8% 6%
1990s 8402 63% 10% 10% 7%
2000s 14938 61% 11% 10% 7%
2010s 15728 63% 12% 11% 7%
2020s 3501 68% 9% 10% 5%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
2.d5 63% 68% ▲ +5.1%
2.e3 12% 9% ▼ -2.1%
2.c3 11% 10% ▼ -1.1%
2.Nf3 7% 5% ▼ -1.8%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 10 parties
Karpov, Anatoly — 4 parties
Botvinnik, Mikhail — 3 parties
Kasparov, Garry — 3 parties
Anand, Viswanathan — 2 parties
Kramnik, Vladimir — 1 partie
Ding, Liren — 1 partie
Gukesh D — 1 partie
Parties historiques
2.d5 — 63.5% (29275 parties)
1950 — Sajtar, Jaroslav vs Piskov, Kamen — 1-0 — CSR-BUL Prague CZE
1950 — Eugenio, Sarah De Oliveira vs Steiner, Herman — 0-1 — Venice ITA
1950 — Aguilar Del Razo, Danna Zoe vs Porreca, Giorgio — 0-1 — ?
1950 — Kramer, Haije vs Van Seters, Frits — 1/2-1/2 — Beverwijk NED
1950 — Eugenio, Sarah De Oliveira vs Trifunovic, Petar — 1/2-1/2 — Amsterdam NED
2.e3 — 10.6% (4878 parties)
1950 — White, Alexander vs Schmid, Lothar — 0-1 — ?
1950 — Aguilar Del Razo, Danna Zoe vs Stalda, Giuseppe — 0-1 — ?
1950 — Boulahanis, Ioannis vs Rossetto, Hector — 1-0 — Dubrovnik CRO
1952 — Sliwa, Bogdan vs Salo, Tapio — 1-0 — Helsinki olm
1952 — Nestler, Vincenzo vs Paoli, Enrico — 0-1 — Ferrara
2.c3 — 10.0% (4599 parties)
1950 — Ferrantes, Giovanni vs Stalda, Giuseppe — 1-0 — ?
1951 — Estrada, Walter vs Kalkstein, Rodolfo — 0-1 — San Rafael
1952 — Mondaini, Giulio Cesare vs Castaldi, Vincenzo — 0-1 — Ferrara
1952 — Mondaini, Giulio Cesare vs Gay, Antonio — 1-0 — Ferrara ITA
1953 — Balunos, Reynaldo vs Tal, Mikhail — 1/2-1/2 — Riga LAT
2.Nf3 — 7.0% (3226 parties)
1951 — Laszlo, Csaba vs Koberl, Ferenc — 0-1 — ?
1951 — Eugenio, Sarah De Oliveira vs Koberl, Ferenc — 1-0 — ?
1953 — Kupferstich, Moises vs Knudsen, Egon — 1-0 — Copenhagen DEN
1954 — Macskasy, Elod vs Vajda, Arpad — 0-1 — Budapest HUN
1954 — Panno, Oscar vs Shocron, Ruben — 1/2-1/2 — Mar del Plata ARG