<?xml version="1.0" encoding="ISO-8859-1"?>

<screensaver name="queens" _label="Queens" gl="yes">

  <command arg="--root"/>

  <video href="https://www.youtube.com/watch?v=Ssy0ldFDeAs"/>

  <number id="delay" type="slider" arg="--delay %"
          _label="Frame rate" _low-label="Low" _high-label="High"
          low="0" high="100000" default="20000"
          convert="invert"/>

  <hgroup>
   <boolean id="wire"    _label="Wireframe" arg-set="--wireframe"/>
   <boolean id="showfps" _label="Show frame rate" arg-set="--fps"/>
  </hgroup>

  <xscreensaver-updater />

  <_description>
The N-Queens problem: how to place N queens on an NxN chessboard
such that no queen can attack a sister?

See also the "Endgame" screen saver.

https://en.wikipedia.org/wiki/Eight_queens_puzzle

Written by Blair Tennessy and Jamie Zawinski; 2002.
  </_description>
</screensaver>
