Ambassadeurs : Mitkov, Nikola (22x), Weeramantry, Sunil (12x), Alaimo, Riccardo (11x), Short, Nigel D (11x), Matras-Clement, Agnieszka (10x), Koronowski, Heinz-Juergen (10x), Gelfand, Boris (9x), Niebling, Ferdinand (7x)
4.Bb5 — 12.1% (1324 parties)
Ambassadeurs : Chaves, Joara (13x), Haanpaa, Jorma (9x), Petzold, Hans, Prof. Dr. (8x), Skidmore, Jennifer M (7x), Epishin, Vladimir (5x), Mikalsen, Odd Erling (5x), Duric, Rajko (4x), Zinn, Lothar (3x)
4.Bc4 — 6.4% (695 parties)
Ambassadeurs : Rabovszky, Gyorgy (5x), Jiruse, Josef (4x), Martinez, M Catalino (3x), Wolf, Stefan (3x), Gaudineau, Eric (3x), Fernandez, Laura (3x), Forcen Esteban, Daniel (3x), Boronyak, Arpad (3x)
Anand, Viswanathan — 4 parties Carlsen, Magnus — 3 parties Kasparov, Garry — 1 partie Ju, Wenjun — 1 partie
Parties historiques
4.Nf3 — 79.0% (8646 parties)
1952 — Karaklajic, Dimitrije vs Lob, Chris — 1-0 — Belgrade SRB 1952 — Aadhitha Karikalan vs Lob, Paulin — 1-0 — Belgrade SRB 1954 — Rubinchik, Leonid vs Lauberte, Milda — 1-0 — Riga LAT 1957 — Johannesson, Bjorn vs Johannsson, Ingi R — 0-1 — Reykjavik ISL 1957 — Wolk, Sigmund vs Darga, Klaus — 1/2-1/2 — FRG-ch Bad Neuenahr
4.Bb5 — 12.1% (1324 parties)
1953 — Herter, Arne vs Gauss, Andreas — 1-0 — Kirchheim 1956 — Hostinsky, Zdenek vs Daveronis, Josef — 1/2-1/2 — Chomutov 1959 — Abreu Maria Samil vs Todorova, Paunka — 1-0 — Plovdiv BUL 1959 — Zinn, Lothar vs Filipowicz, Andrzej — 1-0 — Magdeburg GER 1960 — Zinn, Lothar vs Van Humbeek — 1-0 — Leningrad RUS
4.Bc4 — 6.4% (695 parties)
1951 — Poulsen, Christian vs Pedersen, Eigil — 1/2-1/2 — dkch 51 1969 — Mossong, Hubert vs Nemlioglu, Ahmet Fahri — 1-0 — Groningen NED 1971 — Nowarra, Waltraud vs Janssen, Lieselotte — 1/2-1/2 — Strasbourg ch20-DDR 1972 — Pokorny, Jiri vs Lemmetty, Martti — 1-0 — Pula CRO 1973 — Nowarra, Waltraud vs Mozna, Eva — 1-0 — Karlovy Vary
4.g3 — 1.2% (136 parties)
1961 — Rinder, Elfriede vs Konarkowska-Sokolov, Henrijeta — 1/2-1/2 — Vrnjacka Banja SRB 1979 — Keogh, Eamon vs Smyth, Michael — 1-0 — Dublin IRL 1980 — Mcgrath, Sean vs Brodie, Hugh — 0-1 — Burlington VT 1981 — Day, Lawrence A. vs Reeve, Jeff — 0-1 — Western Canadian Ope 1991 — Hanke, Leonhard vs Eisenbeis, Norman — 1/2-1/2 — Triberg 25'
Carlsen, Magnus — 3 parties
Kasparov, Garry — 1 partie
Ju, Wenjun — 1 partie
1952 — Aadhitha Karikalan vs Lob, Paulin — 1-0 — Belgrade SRB
1954 — Rubinchik, Leonid vs Lauberte, Milda — 1-0 — Riga LAT
1957 — Johannesson, Bjorn vs Johannsson, Ingi R — 0-1 — Reykjavik ISL
1957 — Wolk, Sigmund vs Darga, Klaus — 1/2-1/2 — FRG-ch Bad Neuenahr
1956 — Hostinsky, Zdenek vs Daveronis, Josef — 1/2-1/2 — Chomutov
1959 — Abreu Maria Samil vs Todorova, Paunka — 1-0 — Plovdiv BUL
1959 — Zinn, Lothar vs Filipowicz, Andrzej — 1-0 — Magdeburg GER
1960 — Zinn, Lothar vs Van Humbeek — 1-0 — Leningrad RUS
1969 — Mossong, Hubert vs Nemlioglu, Ahmet Fahri — 1-0 — Groningen NED
1971 — Nowarra, Waltraud vs Janssen, Lieselotte — 1/2-1/2 — Strasbourg ch20-DDR
1972 — Pokorny, Jiri vs Lemmetty, Martti — 1-0 — Pula CRO
1973 — Nowarra, Waltraud vs Mozna, Eva — 1-0 — Karlovy Vary
1979 — Keogh, Eamon vs Smyth, Michael — 1-0 — Dublin IRL
1980 — Mcgrath, Sean vs Brodie, Hugh — 0-1 — Burlington VT
1981 — Day, Lawrence A. vs Reeve, Jeff — 0-1 — Western Canadian Ope
1991 — Hanke, Leonhard vs Eisenbeis, Norman — 1/2-1/2 — Triberg 25'