Ambassadeurs : Portisch, Lajos (12x), Certek, Pavel (7x), ? (7x), Unzicker, Ferdinand, Dr. (6x), Adamski, Jan (6x), Simantsev, Mikhail (6x), Golombek, Harry (5x), Filip, Miroslav (5x)
Ambassadeurs : Polgar, Susan (5x), Olesen, Martin (4x), Clares Huanca, Danner Saed (3x), Zhukhovitsky, Samuel (3x), Sammalvuo, Tapani (3x), Harikrishna, Pentala (3x), Kaiser, Michael (3x), Darga, Klaus (2x)
6.Nbd2 — 2.8% (40 parties)
Ambassadeurs : Pachman, Ludek (1x), Darga, Klaus (1x), Sharipov, Munir (1x), Dogantug, Ahmet Ismail (1x), Semenov , Volodymyr (1x), Osnos, Viatcheslav (1x), Fedorowicz, John (1x), Seirawan, Yasser (1x)
1950 — Zirngibl, Albert vs Nuesken, Fritz — 0-1 — Soemmerda GER 1950 — Petrosian, Tigran A. vs Sherbakov, Vitaly — 0-1 — Moscow RUS 1950 — Stahlberg, Gideon vs Golombek, Harry — 1-0 — Amsterdam NED 1951 — Coosemans, Billy vs Larsen, Bent — 0-1 — Birmingham/Coventry 1951 — Heinicke, Herbert vs Teschner, Rudolf — 1/2-1/2 — Augsburg GER
6.Nc3 — 20.3% (294 parties)
1952 — Moiseev, Oleg vs Ilivitsky, Georgy A — 1/2-1/2 — Moskou ch-URS 1952 — Sandor, Bela vs Bakonyi, Elek — 0-1 — Budapest HUN 1954 — Maderna, Carlos vs Perez Alcocer, Jose — 1-0 — Mar del Plata ARG 1955 — Ujtelky, Maximilián Samuel Rudolf vs Szily, Jozsef — 1-0 — Prague CZE 1956 — Juergens, Helmut vs Fuchs, Reinhart — 0-1 — GDR-ch Leipzig GER
6.Nbd2 — 2.8% (40 parties)
1957 — Pachman, Ludek vs Darga, Klaus — 1-0 — Wenen etc 1974 — Sharipov, Munir vs Dogantug, Ahmet Ismail — 1/2-1/2 — Teesside ENG 1978 — Semenov , Volodymyr vs Osnos, Viatcheslav — 1/2-1/2 — Astrakhan 1978 — Fedorowicz, John vs Seirawan, Yasser — 0-1 — Memphis, TN USA 1990 — Kivimaki, Jaakko vs Kytoniemi, Jyrki — 1-0 — Tampere
6.dxc5 — 0.7% (10 parties)
1956 — Bertholdt, Dieter vs Fuchs, Reinhart — 1/2-1/2 — GDR-ch Leipzig GER 1995 — Ley, Reinhard vs Schaefer, Friedhelm — 1-0 — Hachenburg 1998 — Haag, Wolfgang vs Priehoda, Vitezslav — 0-1 — Ostrava CZE 2002 — Jensen, Kim Ronnow vs Thull, Ruediger — 1/2-1/2 — ICCF Email 2005 — Decsey, Katalin vs Lakos, Nikoletta — 0-1 — Szeged HUN
Tal, Mikhail — 2 parties
1950 — Petrosian, Tigran A. vs Sherbakov, Vitaly — 0-1 — Moscow RUS
1950 — Stahlberg, Gideon vs Golombek, Harry — 1-0 — Amsterdam NED
1951 — Coosemans, Billy vs Larsen, Bent — 0-1 — Birmingham/Coventry
1951 — Heinicke, Herbert vs Teschner, Rudolf — 1/2-1/2 — Augsburg GER
1952 — Sandor, Bela vs Bakonyi, Elek — 0-1 — Budapest HUN
1954 — Maderna, Carlos vs Perez Alcocer, Jose — 1-0 — Mar del Plata ARG
1955 — Ujtelky, Maximilián Samuel Rudolf vs Szily, Jozsef — 1-0 — Prague CZE
1956 — Juergens, Helmut vs Fuchs, Reinhart — 0-1 — GDR-ch Leipzig GER
1974 — Sharipov, Munir vs Dogantug, Ahmet Ismail — 1/2-1/2 — Teesside ENG
1978 — Semenov , Volodymyr vs Osnos, Viatcheslav — 1/2-1/2 — Astrakhan
1978 — Fedorowicz, John vs Seirawan, Yasser — 0-1 — Memphis, TN USA
1990 — Kivimaki, Jaakko vs Kytoniemi, Jyrki — 1-0 — Tampere
1995 — Ley, Reinhard vs Schaefer, Friedhelm — 1-0 — Hachenburg
1998 — Haag, Wolfgang vs Priehoda, Vitezslav — 0-1 — Ostrava CZE
2002 — Jensen, Kim Ronnow vs Thull, Ruediger — 1/2-1/2 — ICCF Email
2005 — Decsey, Katalin vs Lakos, Nikoletta — 0-1 — Szeged HUN