Copyright © University of Cambridge. All rights reserved.
'9 Hole Light Golf' printed from http://nrich.maths.org/
If you can see this message Flash may not be working in your browser
Please see http://nrich.maths.org/techhelp/#flash to enable it.
Can you convince yourself that it is possible to reach every possible arrangement of lights?
We think this 3x3 version of the game is often strangely harder than the 5x5 version, which can be found here
. Why might that be true?