Ambassadeurs : Romanishin, Oleg M (12x), Korchnoi, Viktor (11x), Mikhalchishin, Adrian (9x), Olafsson, Fridrik (6x), Ribli, Zoltan (6x), Wirthensohn, Heinz (6x), Speelman, Jon S (5x), Gavrikov, Viktor (5x)
4…b6 — 34.2% (431 parties)
Ambassadeurs : Ftacnik, Lubomir (8x), Karpov, Anatoly (6x), Rozentalis, Eduardas (6x), Gulko, Boris (4x), Yermolinsky, Alex (4x), Mikhalchishin, Adrian (4x), Smejkal, Jan (3x), Kramnik, Vladimir (3x)
4…Bxc3 — 3.8% (48 parties)
Ambassadeurs : Razuvaev, Yuri S (5x), Adams, Michael (2x), Pelletier, Yannick (2x), Bernei, Andras (1x), Ambasa Ingrio (1x), Stamm, V. (1x), Guzman , Abril (1x), Vendrell, Paul-Edouard (1x)
1954 — Olafsson, Fridrik vs Eken, Max — 1/2-1/2 — Amsterdam olm 1957 — Golz, Werner vs Portisch, Lajos — 0-1 — Ploiesti 1959 — Neikirkh, Oleg vs Portisch, Lajos — 1-0 — Balatonfured 1960 — Eliskases, Erich vs Cruz, Raul C. — 1-0 — Buenos Aires ch-ARG 1960 — Rejfir, Josef vs Lehmann, Heinz — 0-1 — Marianske Lazne
4…b6 — 34.2% (431 parties)
1953 — Smyslov, Vasily vs Rapaka Samuel Paul — 1-0 — Zurich SUI 1954 — Pachman, Ludek vs Balanel, Ion — 0-1 — Bucharest ROU 1957 — Chistiakov, Alexander vs Furman, Semyon — 1/2-1/2 — Kiev UKR 1961 — Kottnauer, Cenek vs Kramer, Haije — 1-0 — Cheltenham 1963 — Dzindzichashvili, Roman vs Lalith Visakan — 1-0 — Moscow tt
4…Bxc3 — 3.8% (48 parties)
1972 — Stein, Leonid vs Csom, Istvan — 1/2-1/2 — Zagreb CRO 1977 — Ambasa Ingrio vs Stamm, V. — 0-1 — ? 1985 — Guzman , Abril vs Vendrell, Paul-Edouard — 0-1 — cr. 1987 — Bernei, Andras vs Razuvaev, Yuri S — 1/2-1/2 — Cappelle la Grande FRA 1988 — Lerner, Konstantin Z vs Romanishin, Oleg M — 1/2-1/2 — Simferopol UKR
4…c5 — 3.6% (45 parties)
1968 — Huebner, Robert vs Mohrlok, Dieter — 1-0 — Buesum GER 1968 — Ivkov, Borislav vs Gheorghiu, Florin — 1/2-1/2 — Wijk aan Zee NED 1969 — Olafsson, Fridrik vs Langeweg, Kick — 1-0 — Wijk aan Zee NED 1980 — Geller, Efim P. vs Garcia Gonzales, Guillermo — 1-0 — Las Palmas ESP 1983 — King, Daniel J vs Gobet, Fernand — 1/2-1/2 — Zug
Karpov, Anatoly — 7 parties
Anand, Viswanathan — 5 parties
Carlsen, Magnus — 4 parties
Tal, Mikhail — 3 parties
Kasparov, Garry — 2 parties
Hou, Yifan — 1 partie
1957 — Golz, Werner vs Portisch, Lajos — 0-1 — Ploiesti
1959 — Neikirkh, Oleg vs Portisch, Lajos — 1-0 — Balatonfured
1960 — Eliskases, Erich vs Cruz, Raul C. — 1-0 — Buenos Aires ch-ARG
1960 — Rejfir, Josef vs Lehmann, Heinz — 0-1 — Marianske Lazne
1954 — Pachman, Ludek vs Balanel, Ion — 0-1 — Bucharest ROU
1957 — Chistiakov, Alexander vs Furman, Semyon — 1/2-1/2 — Kiev UKR
1961 — Kottnauer, Cenek vs Kramer, Haije — 1-0 — Cheltenham
1963 — Dzindzichashvili, Roman vs Lalith Visakan — 1-0 — Moscow tt
1977 — Ambasa Ingrio vs Stamm, V. — 0-1 — ?
1985 — Guzman , Abril vs Vendrell, Paul-Edouard — 0-1 — cr.
1987 — Bernei, Andras vs Razuvaev, Yuri S — 1/2-1/2 — Cappelle la Grande FRA
1988 — Lerner, Konstantin Z vs Romanishin, Oleg M — 1/2-1/2 — Simferopol UKR
1968 — Ivkov, Borislav vs Gheorghiu, Florin — 1/2-1/2 — Wijk aan Zee NED
1969 — Olafsson, Fridrik vs Langeweg, Kick — 1-0 — Wijk aan Zee NED
1980 — Geller, Efim P. vs Garcia Gonzales, Guillermo — 1-0 — Las Palmas ESP
1983 — King, Daniel J vs Gobet, Fernand — 1/2-1/2 — Zug