Glass represented Austria in the 5th Chess Olympiad at Folkstone 1933. In April 1935, he tied for 3rd-5th in Tel Aviv (the 2nd Maccabiah Games, Abram Blass won). He tied for 8-10th at Budapest 1936 (Mieczysław Najdorf and Lajos Steiner won). After Anschluss in 1938, he became imprisoned in Dachau concentration camp where he won the camp chess tournament once ahead of Georg Klaus. Later he moved to China, and living in the Shanghai Ghetto survived World War II.