Oscar Chajes (HA-yes; December 14, 1873 – February 28, 1928)[1] was an American chess player.
[2] Chajes was Jewish[3] and was born in Brody,[1][2] Galicia, Austria-Hungary, in what is now Ukraine.
[2] In January/February 1911, he tied for 3rd-4th in New York behind Frank Marshall and José Raúl Capablanca.
[2] In July 1918, he took 2nd, behind Abraham Kupchik, in Rye Beach, N.Y.[2] In October/November 1918, he took 4th in New York (Manhattan Chess Club Championship).
In 1923, he tied for 7-8th in Lake Hopatcong, New Jersey (9th American Chess Congress).
Chajes played two matches against Dawid Janowski: he lost in Havana in 1913 (+0 −2 =1), and won in 1918 in New York (+7 −5 =10).
[1] Chajes received two brilliancy prizes for games at Carlsbad 1911, including this victory as White over Julius Perlis.