Cray Blitz

Cray Blitz is a chess program running on Cray hardware such as the Cray-1 supercomputer, Cray X-MP, Cray Y-MP and C916. The program was specifically designed to use multiple processors (16 on the C916). The program was written in FORTRAN with parts in Assembly Language. Twice Cray Blitz won the North American Computer Chess Championship and also twice it won the World Computer Chess Championship (in 1983 and 1986). It's a successor to Blitz.