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.TH SCORPIO 6 "August 21, 2009"
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.SH NAME
scorpio \- chess engine and chess command line client
.SH SYNOPSIS
.B scorpio
.SH DESCRIPTION
This manual page documents the
.B scorpio
chess engine.
.PP
.\" TeX users may be more comfortable with the \fB<whatever>\fP and
.\" \fI<whatever>\fP escape sequences to invode bold face and italics,
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\fBscorpio\fP is a program to play chess against
.SH OPTIONS
After starting scorpio you will see some status output. Make sure, that scorpio is always run 
in a directory with a \fBsorpio.ini\fP file. 
.br
scorpio uses the winboard chess engine protocol to communicate with any graphical user frontend 
like \fBxboard\fP, \fBscid\fP or \fBeboard\fP.

On the client shell there are the following commands available:

\fBegbb_path\fP -- Set the egbb path. 
.br
\fBeht\fP -- Set evaluation hash table size in megabytes.
.br
\fBexit\fP -- Leave analysis mode.                       
.br
\fBforce\fP -- Set the engine to play neither color ('force mode'). Stop clocks.
.br
\fBgo\fP -- Leave force mode and set the engine to play the color that is on move.
.br
\fBhard\fP -- Turn on pondering (thinking on the opponent's time or permanent brain).
.br
\fBhelp\fP -- Produce this listing of supported commands.                            
.br
\fBhistory\fP -- Debugging command to print game history.                            
.br
\fBht\fP -- Set hash table size in megabytes.                                        
.br
\fBlevel\fP -- level <MPS> <BASE> <INC> {Set time controls}.                         
.br
\fBlog\fP -- 'log on' turns log on and 'log off' turns log off.                      
.br
\fBmerge\fP <book1> <book2> <book> <w1> <w2> -- merge two books with weights <w1> and <w2> and save result in book.
.br
\fBmirror\fP -- Debugging command to mirror the current board.                                                      
.br
\fBmoves\fP -- Debugging command to print all possible moves for the current board.                                 
.br
\fBmt/cores\fP -- Set the number of parallel threads of execution.                                                  
.br
\fBmulti_personality\fP -- load the personality for all three game phases.                                          
.br
\fBname\fP -- Tell scorpio who you are.
.br
\fBnew\fP -- Reset the board to the standard chess starting position.
.br
\fBnopost\fP -- do not show thinking.
.br
\fBotim\fP -- otim N {Set a clock that belongs to the opponent in centiseconds.}
.br
\fBperft\fP -- perft <depth> performs a move generation count to <depth>.
.br
\fBpersonality\fP -- Set personality file for game phase 0.
.br
\fBpht\fP -- Set pawn hash table size in megabytes.
.br
\fBpost\fP -- Show thinking.
.br
\fBprotover\fP -- protover <N> {Command sent immediately after the 'xboard' command.}
.br
\fBpvstyle\fP -- style for pv output.
.br
\fBquit\fP -- The chess engine should immediately exit.
.br
\fBrandom\fP -- This GnuChess command is ignored.
.br
\fBrejected\fP -- Response to the feature command.
.br
\fBremove\fP -- The user asks to back up full move.
.br
\fBresign\fP <RESIGN_VALUE> -- Sets resign value.
.br
\fBresult\fP -- Sets the game result.
.br
\fBruneval\fP -- runeval <epdfile> runs the evalution function on EPD file <epdfile>.
.br
\fBrunsearch\fP -- runsearch <epdfile> runs the engine search on EPD file <epdfile>.
.br
\fBscore\fP -- score runs the evaluation function on the current position.
.br
\fBsd\fP -- sd <DEPTH> {The engine should limit its thinking to <DEPTH> ply.}
.br
\fBsetboard\fP -- setboard <FEN> is used to set up FEN position <FEN>.
.br
\fBst\fP -- st <TIME> {Set time controls search time in seconds.}
.br
\fBtime\fP -- time <N> {Set a clock that belongs to the engine in centiseconds.}
.br
\fundo\fP -- The user asks to back up one half move.
.br
\fxboard\fP -- Request xboard mode (the default).
.br

.TP
.TP
.SH SEE ALSO
.BR /usr/share/scorpio25/scorpio.ini
.BR 
.br
.SH AUTHOR
scorpio was written by Daniel Shawul.
.PP
This manual page was written by Oliver Korff <ok@xynyx.de>,
for the Debian project (and may be used by others).