NAME

       stockfish - free UCI chess engine, to calculate chess moves

SYNOPSIS

       stockfish

DESCRIPTION

       This manual page documents the stockfish command.

       stockfish is an UCI chess engine, to calculate chess moves

       Stockfish is a free UCI chess engine derived from Glaurung 2.1. It is not a complete chess
       program, but requires some UCI compatible GUI (like XBoard with  PolyGlot,  eboard,  Jose,
       Arena, in order to be used comfortably.  Read the documentation for your GUI of choice for
       information about how to use Stockfish with your GUI.

       This version of Stockfish supports up to 8 CPUs, but has not been tested  thoroughly  with
       more  than 2.  The program tries to detect the number of CPUs on your computer and set the
       number of search threads accordingly, but please be aware that the detection is not always
       correct.  It is therefore recommended to inspect the value of the "Threads" UCI parameter,
       and to make sure it equals the number of CPU cores on your computer. If you are using more
       than  four  threads,  it  is  recommended  to raise the value of "Minimum Split Depth" UCI
       parameter to 6.

       Opening book

       This version of stockfish has  experimental  support  for  PolyGlot  opening  books.   For
       information about how to create such books, consult the PolyGlot documentation.

OPTIONS

       This program does NOT follow the usual GNU command line syntax, with long options starting
       with two dashes.

SEE ALSO

       Communication with UCI commands is documented  by  "The  UCI  Communication  Protocol"  in
       /usr/share/doc/stockfish/engine-interface.txt.

AUTHOR

       stockfish  was  written  by  <Romstad  Tord  <tord@glaurungchess.com>>  and Marco Costalba
       <mcostalba@gmail.com>.

       This manual page was written by Oliver Korff <ok@xynyx.de>, for the  Debian  project  (but
       may be used by others).

                                        October  10, 2009                            STOCKFISH(6)