queens



XScreenSaver(1)                                                XScreenSaver(1)




NAME

       queens - n queens screensaver


SYNOPSIS

       queens  [-display  host:display.screen]  [-window]  [-root]  [-install]
       [-visual visual] [-delay microseconds] [-fps]


DESCRIPTION

       The queens program solves the n-queens problem (where, in this program,
       N  is  between  5  and  10 queens) using a straightforward backtracking
       algorithm.  The problem is: how may one place N queens on an NxN chess-
       board such that no queen can attack a sister?


OPTIONS

       queens accepts the following options:

       -window Draw on a newly-created window.  This is the default.

       -root   Draw on the root window.

       -install
               Install a private colormap for the window.

       -visual visual
               Specify  which  visual  to use.  Legal values are the name of a
               visual class, or the id number (decimal or hex) of  a  specific
               visual.   -fps  Display  a running tally of how many frames per
               second are being rendered.  In conjunction with -delay 0,  this
               can be a useful benchmark of your GL performance.


ENVIRONMENT

       DISPLAY to get the default host and display number.

       XENVIRONMENT
               to  get  the  name of a resource file that overrides the global
               resources stored in the RESOURCE_MANAGER property.


BUGS

       It’s not unknown for this and other OpenGL hacks to fail under hardware
       accelaration (UtahGLX) and take the X server with them.  Texture images
       must be 16x16 or 32x32 or 64x64 etc.


SEE ALSO

       X(1), xscreensaver(1) xscreensaver-demo(1), xscreensaver-getimage(1)


COPYRIGHT

       Copyright © 2002 by Blair Tennessy.  Permission to use,  copy,  modify,
       distribute,  and  sell this software and its documentation for any pur-
       pose is hereby granted without fee, provided that the  above  copyright
       notice  appear  in  all  copies and that both that copyright notice and
       this permission notice appear in supporting documentation.   No  repre-
       sentations are made about the suitability of this software for any pur-
       pose.  It is provided "as is" without express or implied warranty.


AUTHOR

       Blair Tennessy <tennessb@unbc.ca>, 20-April-2002.




                                   May 2002                    XScreenSaver(1)

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