Ambassadeurs : Smyslov, Vladimir (8x), Golombek, Harry (7x), Alekhine, Alexander (4x), Barcza, Gedeon (4x), Taimanov, Mark (4x), Koblencs, Alexander (3x), Szabo, Ladislav (3x), Keres, Paul (3x)
6…Nc6 — 4.1% (19 parties)
Ambassadeurs : Lasker, Edward (2x), Taimanov, Mark (2x), Golombek, Harry (1x), Jimenez Zerquera, Eleazar (1x), Rideout, H. (1x), Sandrin, Angus (1x), Shainswit, George (1x), Reshevsky, Samuel (1x)
6…c5 — 3.9% (18 parties)
Ambassadeurs : Saduakassova, Dinara (2x), Markus, Robert (1x), Georgiev, Vladimir (1x), Gromov, Sergey Vasilievich (1x), Zubov, Yury Fedorovich (1x), Kasprzyk, Zbigniew (1x), Weldon, David J. (1x), Francovig, Héctor (1x)
Smyslov, Vladimir — 8 parties Alekhine, Alexander — 4 parties Euwe, Max — 1 partie Carlsen, Magnus — 1 partie
Parties historiques
6…Bc6 — 91.8% (428 parties)
1925 — Gurbaks vs Kostic, Boris — 0-1 — Kashmir 1938 — Flohr, Salo vs Fine, Richard Alvaro Adrien — 1/2-1/2 — Amsterdam NED 1938 — Van Scheltinga, Theo vs Fontein, George — 1/2-1/2 — The Hague NED 1939 — Alatortsev, Vladimir N. vs Goglidze, Viktor — 1-0 — Leningrad RUS 1939 — Tsvetkov, Alexandar K vs O'Donovan, J. — 1-0 — Buenos Aires ARG
6…Nc6 — 4.1% (19 parties)
1951 — Rideout, H. vs Sandrin, Angus — 1-0 — Forth Worth 1951 — Shainswit, George vs Reshevsky, Samuel — 0-1 — New York, NY USA 1952 — Jimenez Zerquera, Eleazar vs Lasker, Edward — 1-0 — Havana CUB 1952 — Ivanov, Pavlin Nikolay vs Mandrov, Dimitar — 0-1 — Sofia BUL 1953 — Golombek, Harry vs Lasker, Edward — 1-0 — White Rock Pavilion
6…c5 — 3.9% (18 parties)
2011 — Markus, Robert vs Georgiev, Vladimir — 1/2-1/2 — Skopje MKD 2011 — Gromov, Sergey Vasilievich vs Zubov, Yury Fedorovich — 1/2-1/2 — ICCF 2011 — Johnston, Allan vs Folk Gilsanz, Jordi — 1/2-1/2 — ICCF 2012 — Moraes, Francisco José Baen vs Gutiérrez Dopino, José María — 0-1 — ICCF 2013 — Francovig, Héctor vs Mihai, Partenie — 1/2-1/2 — ICCF
Alekhine, Alexander — 4 parties
Euwe, Max — 1 partie
Carlsen, Magnus — 1 partie
1938 — Flohr, Salo vs Fine, Richard Alvaro Adrien — 1/2-1/2 — Amsterdam NED
1938 — Van Scheltinga, Theo vs Fontein, George — 1/2-1/2 — The Hague NED
1939 — Alatortsev, Vladimir N. vs Goglidze, Viktor — 1-0 — Leningrad RUS
1939 — Tsvetkov, Alexandar K vs O'Donovan, J. — 1-0 — Buenos Aires ARG
1951 — Shainswit, George vs Reshevsky, Samuel — 0-1 — New York, NY USA
1952 — Jimenez Zerquera, Eleazar vs Lasker, Edward — 1-0 — Havana CUB
1952 — Ivanov, Pavlin Nikolay vs Mandrov, Dimitar — 0-1 — Sofia BUL
1953 — Golombek, Harry vs Lasker, Edward — 1-0 — White Rock Pavilion
2011 — Gromov, Sergey Vasilievich vs Zubov, Yury Fedorovich — 1/2-1/2 — ICCF
2011 — Johnston, Allan vs Folk Gilsanz, Jordi — 1/2-1/2 — ICCF
2012 — Moraes, Francisco José Baen vs Gutiérrez Dopino, José María — 0-1 — ICCF
2013 — Francovig, Héctor vs Mihai, Partenie — 1/2-1/2 — ICCF