Ambassadeurs : Burehall, Arne (4x), Kotan, Ladislav (4x), Barua, Debashis (4x), Sladek, Jaroslav (4x), Arribas Robaina, Maritza (4x), ? (4x), Pogosian, Vladimir (4x), Torres, Federico (4x)
5.dxe5 — 12.3% (339 parties)
Ambassadeurs : Coll Enriquez, Lluis (7x), Mueller, Falk (5x), Schraufl, Wolfhardt (5x), D Marco, Gianni (3x), Paglilla, Carlos (3x), Sladek, Jaroslav (3x), Danierova, Rayhon (3x), Khechen, Nabil E (3x)
5.a4 — 10.8% (297 parties)
Ambassadeurs : Barle, Janez (3x), Hirn, Oskar (3x), Regec, Viliam (3x), Saemisch, Friedrich (2x), Alekhine, Alexander (2x), Rocha, Antonio (2x), Cuasnicu, Oscar (2x), Buitrago, Shirley (2x)
1889 — White, Max vs Hanham, James — 1-0 — New York, NY USA 1891 — Burlingame, Elmer E vs Hanham, James — 1-0 — Skaneateles 1893 — Ettlinger, AI. vs Hanham, James — 0-1 — New York, NY USA 1898 — Caro, Horatio vs D Marco, Gianni — 0-1 — Vienna AUT 1900 — Simonson, Gustave vs Hanham, James — 1/2-1/2 — New York, NY USA
5.Nc3 — 14.6% (402 parties)
1899 — Prock, CA. vs Marco, Georg — 0-1 — Vienna AUT 1905 — Marchand, Max vs Hakansson, Arthur — 0-1 — Barmen GER 1906 — Oskam, Gerard vs Marco, Georg — 1/2-1/2 — Ostend 1909 — Brach, Julius vs Di Perna Molinero, Alain — 1-0 — Brno CZE 1911 — Esser, Daniel vs Lowtzky, Mojsesz — 1-0 — Cologne GER
5.dxe5 — 12.3% (339 parties)
1893 — Olly, Edward N vs Hanham, James — 0-1 — New York, NY USA 1900 — Weiss, Jacob vs D Marco, Gianni — 0-1 — Munich GER 1905 — Haertel, Ben vs Dyckhoff, Eduard — 1/2-1/2 — Barmen GER 1905 — Stang, Hans vs John, Walter — 0-1 — Frankfurt GER 1908 — Von Bardeleben, Curt vs Alekhine, Alexander — 0-1 — Duesseldorf GER
5.a4 — 10.8% (297 parties)
1912 — Cohn, Erich vs Englund, Fritz C A — 1-0 — Stockholm SWE 1913 — Gargulak Metodej vs Pokorny, Amos — 1-0 — Ceska Trebova 1920 — Emmrich, K. vs Brinckmann, Alfred — 1-0 — Berlin GER 1920 — Nimzowitsch, Aron vs D Marco, Gianni — 1-0 — Goteborg SWE 1931 — Ordel, SA. vs Bohatirchuk, Fedor — 0-1 — Moscow RUS
Tal, Mikhail — 2 parties
Anand, Viswanathan — 2 parties
1891 — Burlingame, Elmer E vs Hanham, James — 1-0 — Skaneateles
1893 — Ettlinger, AI. vs Hanham, James — 0-1 — New York, NY USA
1898 — Caro, Horatio vs D Marco, Gianni — 0-1 — Vienna AUT
1900 — Simonson, Gustave vs Hanham, James — 1/2-1/2 — New York, NY USA
1905 — Marchand, Max vs Hakansson, Arthur — 0-1 — Barmen GER
1906 — Oskam, Gerard vs Marco, Georg — 1/2-1/2 — Ostend
1909 — Brach, Julius vs Di Perna Molinero, Alain — 1-0 — Brno CZE
1911 — Esser, Daniel vs Lowtzky, Mojsesz — 1-0 — Cologne GER
1900 — Weiss, Jacob vs D Marco, Gianni — 0-1 — Munich GER
1905 — Haertel, Ben vs Dyckhoff, Eduard — 1/2-1/2 — Barmen GER
1905 — Stang, Hans vs John, Walter — 0-1 — Frankfurt GER
1908 — Von Bardeleben, Curt vs Alekhine, Alexander — 0-1 — Duesseldorf GER
1913 — Gargulak Metodej vs Pokorny, Amos — 1-0 — Ceska Trebova
1920 — Emmrich, K. vs Brinckmann, Alfred — 1-0 — Berlin GER
1920 — Nimzowitsch, Aron vs D Marco, Gianni — 1-0 — Goteborg SWE
1931 — Ordel, SA. vs Bohatirchuk, Fedor — 0-1 — Moscow RUS