Evans performed well in many U.S. events during the 1960s and 1970s but his trips abroad to international tournaments were infrequent and less successful. He won the U.S. Open Chess Championship in 1951, 1952, 1954 (he tied with Arturo Pomar but won the title on the tie-break) and tied with Walter Browne in 1971. He also won the first Lone Pine tournament in 1971. He represented the U.S. in eight Chess Olympiads over a period of twenty-six years, winning gold (1950), silver (1958), and bronze (1976) medals for his play, and participating in team gold (1976) and silver (1966) medals.
His best results on foreign soil included two wins at the Canadian Open Chess Championship, 1956 in Montreal, and 1966 in Kingston, Ontario. He tied for first-second in the 1975 Portimao International in Portugal and for second-third with World Champion Tigran Petrosian, behind Jan Hein Donner, in Venice, 1967. However, his first, and what ultimately proved to be his only, crack at the World Chess Championship title ended in a disappointing 14th place (10/23) in the 1964 Amsterdam Interzonal.
He never entered the world championship cycle again, and concentrated his efforts on assisting his fellow American Bobby Fischer in his quest for the world title. He was Fischer's second for the Candidates matches leading up to the World Chess Championship 1972 against Boris Spassky, though not for the championship match itself, after a disagreement with Fischer.
Other well-received books by Evans include Modern Chess Brilliancies (1970), What's The Best Move (1973) and Test Your Chess I.Q. (2001). He revised the tenth edition of the openings treatise Modern Chess Openings (1965), co-authored with editor Walter Korn. He also made a significant contribution to Fischer's My 60 Memorable Games (1969), writing the introductions to each of the 60 games and had urged the future World Champion to publish when he had initially been reluctant to do so.
During the 1960s Evans developed a very successful career in chess journalism and helped found the American Chess Quarterly which ran from 1961-65. He was an editor of Chess Digest during the 60s and 70s and he still writes regularly for Chess Life, the official publication of the United States Chess Federation (USCF) and Chess Life Online. His popular question and answer column was read by more than 250,000 readers every month and ran for over thirty years, but was cut in 2006 as part of a new editor seeking a new look for the magazine. His weekly chess column, Evans on Chess, has appeared in more than fifty separate newspapers throughout the United States. He also writes a column for the World Chess Network.
Evans has also commentated on some of the biggest matches for Time magazine and ABC's Wide World of Sports, including the 1972 Fischer versus Spassky match, the 1993 PCA world title battle between Gary Kasparov and Nigel Short and the Braingames world chess championship match between Vladimir Kramnik and Gary Kasparov in 2000.
His contributions to chess writing and journalism have earned him many awards, including the USCF's Chess Journalist of the Year award in 2000. He was inducted into the U.S. Chess Hall of Fame in 1994.
Yanofsky-Evans, U.S. Open, Corpus Christi 1947 1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 Bg4 5.h3 Bxf3 6.Qxf3 dxe5 7.dxe5 e6 8.a3 Nc6 9.Bb5 Qd7 10.c4 Nde7 11.0-0 Qd4 12.Bg5 a6 13.Bxe7? axb5 14.Bxf8 Rxf8 15.cxb5 Nxe5 16.Qe2 0-0-0 17.Nc3 Ng6 18.Rad1 Qe5 19.Qc2 Rxd1 20.Rxd1 Rd8 21.Rc1 Nf4 22.Kh1 Qg5 23.Rg1? (23. f3) Qh5! 24.Kh2? Rd3! 25.f3 (see diagram at left) 25...Rxf3! 26.Rd1? (26.Rc1 protecting the queen) 26...Nxh3!! Larry Parr wrote, "Larry Evans recalls 'a rush' as he played this spectacular crusher. 'This victory,' he wrote in a recent e-mail, 'gave me my first taste of fame. If I could beat the guy who beat Botvinnik, perhaps someday I could also beat Botvinnik!'" 27.gxf3 Nf2+ 28.Kg3 Qh3+! 29.Kf4 Qh2+ 30.Ke3 Ng4+! 0-1 If 31.Kd3, Ne5+ wins White’s queen.