.\" Copyright (c) 1994
.\"	The Regents of the University of California.  All rights reserved.
.\"
.\" This code is derived from software contributed to Berkeley by
.\" Ralph Campbell.
.\"
.\" %sccs.include.redist.roff%
.\"
.\"     @(#)gomoku.6	8.2 (Berkeley) 08/04/94
.\"
.Dd 
.Dt GOMOKU 6
.Os BSD 4.4
.Sh NAME
.Nm gomoku
.Nd game of 5 in a row
.Sh SYNOPSIS
.Nm gomoku
.Op Fl bcdu
.Op Fl D Ar debugfile
.Op Ar inputfile
.Sh DESCRIPTION
.Nm Gomoku
is a two player game were the object is to get 5 in a row horizontally,
vertically or diagonally on a 19 by 19 grid. By convention, black always
moves first.
With no arguments,
.Nm gomoku
will display a playing board and prompt for moves from the user.
Valid moves are a letter for the column and a number for the row of an empty
board location. Entering ``quit" or ``resign" will end the game.
You can save the current state of the game by entering ``save" and
supplying a file name when prompted.
The optional file
.Ar inputfile
can be used to restore a saved game.
.Pp
The options are:
.Bl -tag -width Ds
.It Fl b
This option sets background mode. Input moves are read from standard input,
the computer picks a move, and prints it to standard output. The first
input line should be either ``black" or ``white" to specify whether
.Nm gomoku
has the first move or not respectively. This
option was intended for game tournaments where a referee program handles
the board display and pits one program against another.
.It Fl c
Computer verses computer.
.Nm Gomoku
will play a game against itself. This is mostly used for testing.
.It Fl d
Print debugging information. Repeating this option more than
once yields more detailed information.
.It Fl D Ar debugfile
Print the debug information to
.Ar debugfile
instead of to the standard output.
.It Fl u
User verses user. This is mostly used for testing.
.Sh AUTHOR
Ralph Campbell
.Sh ACKNOWLEDGEMENTS
The board display routines were based on the
.Nm goref
program written by Peter Langston.