Colour Sudoku

I've launched a fun side project - Colour Sudoku (ed: now closed), a new type of sudoku puzzle where you have to place the numbers 1-9 in every row, column and blocks of a single colour (so 1-9 in the yellow boxes, 1-9 in the blue boxes, etc). Here's an example:

Puzzles will be posted automativelly every day!

12 March 2006   |   puzzle, project