Noughts and Crosses

Stage: 3 Challenge Level: Challenge Level:3 Challenge Level:3 Challenge Level:3

Use the interactivity below to get a feel for the problem.

Clicking on a face gives a layer (e.g. clicking on one of the darkest faces selects a horizontal layer), then clicking on either a face or a corner star gives a winning line.
For long diagonal winning lines click directly on a corner star (hover on one of the vertices of the large cube to reveal a star).

Full screen version.

This text is usually replaced by the Flash movie.


Published January 2007.