Ambassadeurs : Rabiega, Robert (23x), Rausis, Igors (13x), Alekseev, Evgeny (12x), Chernin, Alexander (11x), Handke, Florian, Dr. (11x), Mainka, Romuald (10x), Godena, Michele (10x), De Santis, Alessio (10x)
4.d5 — 13.7% (668 parties)
Ambassadeurs : Turner, Joseph David (6x), Fischer, Roger (5x), Suuronen, Petri (5x), Hartlaub, Marianne (4x), Dutreeuw, Marc (4x), Kipferl, Wolfgang (4x), Lorscheid, Gerhard (4x), Richter, Gerhard, Dr. (3x)
4.Nf3 — 9.3% (453 parties)
Ambassadeurs : Godena, Michele (17x), Belkhodja, Slim (7x), Maltsevskaya, Aleksandra (5x), Eyo Castro-Rial, Alberto (3x), Sulava, Nenad (3x), Mrdja, Milan (3x), Stempin, Pawel (2x), Grigorov, Jordan N (2x)
Anand, Viswanathan — 2 parties Kramnik, Vladimir — 2 parties Carlsen, Magnus — 1 partie
Parties historiques
4.c3 — 62.3% (3032 parties)
1947 — Heneage, Hugh Windsor Fiesch vs Cole, Henry Holwell — 0-1 — Harrogate 1949 — Boutteville, Cesar vs Pinson, Henri — 1-0 — Besancon FRA 1951 — Larsa vs Najdorf, Miguel — 0-1 — Mexico Tournament ,H 1951 — Grob, Henry vs Batchinsky, Basile — 1-0 — Zurich SUI 1951 — Milic, Borislav vs Lange, Wilfried — 1-0 — It Dortmund GER
4.d5 — 13.7% (668 parties)
1855 — Cochrane, John Miles vs Bonnerjee, Mohishunder — 1-0 — Calcutta IND 1957 — Jursevskis Miervaldis vs Ridout Howard — 1-0 — Vancouver BC CAN 1964 — Zurakhov, Vladlen Y vs Gershman, Semion — 1/2-1/2 — ? 1965 — Geissert, Eberhard vs Boehnisch, Manfred — 1/2-1/2 — Bourgas BUL 1966 — Hutagalung, T vs Matanovic, Aleksandar — 0-1 — La Habana olm prel
4.Nf3 — 9.3% (453 parties)
1923 — Mieses, Jacques vs Wahltuch, Victor Leonard — 1-0 — Liverpool 1974 — Fernandez Rodriguez, Angel Luis vs Garcia Gonzales, Guillermo — 0-1 — Arrecife de Lanzarote 1977 — Volpert, Gilbert vs Grill, Bernd — 0-1 — Pang 1981 — Larsson, Per vs Lekander, Rolf — 1-0 — Ystad 1981 — Larsson, Per vs Johansson, Jan 1964 — 1/2-1/2 — Ystad
4.Ne2 — 7.1% (345 parties)
1949 — Ackerman Conrad Christoffel vs Pirc Salamon, Hubert — 0-1 — Ljubljana 1951 — Vasconcellos, Fernando O vs Gentil Junior, Luiz — 0-1 — Fortaleza BRA 1951 — De Paoli, Emilio vs Czerniak, Magdalena — 0-1 — Reggio Emilia ITA 1952 — Kruger, Stefan vs Ozols, Karlis — 1/2-1/2 — Melbourne AUS 1955 — Barzin, Marcel vs Van Den Broeck, Hans — 0-1 — Belgium
Kramnik, Vladimir — 2 parties
Carlsen, Magnus — 1 partie
1949 — Boutteville, Cesar vs Pinson, Henri — 1-0 — Besancon FRA
1951 — Larsa vs Najdorf, Miguel — 0-1 — Mexico Tournament ,H
1951 — Grob, Henry vs Batchinsky, Basile — 1-0 — Zurich SUI
1951 — Milic, Borislav vs Lange, Wilfried — 1-0 — It Dortmund GER
1957 — Jursevskis Miervaldis vs Ridout Howard — 1-0 — Vancouver BC CAN
1964 — Zurakhov, Vladlen Y vs Gershman, Semion — 1/2-1/2 — ?
1965 — Geissert, Eberhard vs Boehnisch, Manfred — 1/2-1/2 — Bourgas BUL
1966 — Hutagalung, T vs Matanovic, Aleksandar — 0-1 — La Habana olm prel
1974 — Fernandez Rodriguez, Angel Luis vs Garcia Gonzales, Guillermo — 0-1 — Arrecife de Lanzarote
1977 — Volpert, Gilbert vs Grill, Bernd — 0-1 — Pang
1981 — Larsson, Per vs Lekander, Rolf — 1-0 — Ystad
1981 — Larsson, Per vs Johansson, Jan 1964 — 1/2-1/2 — Ystad
1951 — Vasconcellos, Fernando O vs Gentil Junior, Luiz — 0-1 — Fortaleza BRA
1951 — De Paoli, Emilio vs Czerniak, Magdalena — 0-1 — Reggio Emilia ITA
1952 — Kruger, Stefan vs Ozols, Karlis — 1/2-1/2 — Melbourne AUS
1955 — Barzin, Marcel vs Van Den Broeck, Hans — 0-1 — Belgium