Nicholas Ernest de Firmian is an American chess player who received the FIDE title of Grandmaster (GM) in 1985. He is a three-time U.S. chess champion, winning in 1987, 1995, and 1998. He also tied for first in 2002, but Larry Christiansen won the playoff. He is also a chess writer, most famous for his work in writing the 13th, 14th, and 15th editions of the important chess opening treatise Modern Chess Openings. He was born in Fresno, California.