CHEST is an experimental program solving orthodox chess problems
(like "white to move and mate in 5 moves"). It is written in ANSI
C, and developed under UNIX. There is no user interface: CHEST
just reads an input file and produces plain text on standard output.
It is not hard to come up with a program that does the same job as
CHEST, but it will be rather slow for non-trivial jobs. CHEST
tries hard to be fast but still 100% correct.