Samuel Rosenthal at Paris 1878). The 1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 d5 6.Bd3 Be7 7.0-0 0-0 variation of the Petroff Defence is named after him, as well as the Mason Gambit in the Giuoco Piano: 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d4 exd4 6.0-0. Books References External links An article on James Mason An article on James Mason 1849 births 1905 deaths Irish adoptees Irish chess players Irish emigrants to the United States (before 1923) American chess players British chess players People from Kilkenny (city) American chess writers American male non-fiction writers British chess writers Chess theoreticians 19th-century chess players