A British university student, Antony Harfield, has invented a colour, online version of Sudoku. It is part of his research where he is studying 'Empirical Modelling' - a science that deals with developing new technologies that will help and support the way humans think.

You can play the game by clicking on the link below:
www2.warwick.ac.uk/fac/sci/dcs/research/em/sudoku