Lights Out

A simple demo applet

You can try the following Lights Out applet. The position posed is a solvable one, but in boards of size 5x5, there are many non solvable states.

This applet is a simple version of Lights Out. You can find many, much better ones, following the links below.


  1. Matthew Baker, Lights Out Games. Several links and information on this and other similar games.
  2. Ken Barr, Lights Out Fan Club. As above, several links and information.
  3. Óscar Martín-Sánchez and Cristóbal Pareja-Flores, A Visual Basic Implementation of Lights Out.

Copyright ©2001 The Mathematical Association of America