This is my first time on this forum. I spent a lot of time on Sudoku Programmers forums years ago when I was writing my own Sudoku generator. Around that time, I invented a puzzle, but didn't have the time to do it. I've since found the time and generated one especially for this forum which I've attached to the post.
The rules of the puzzle:
(1) Every sudoku must be filled with 1-9 in each row, column and box as usual.
(2) The coloured regions must have the same solution.
I have a website for anyone interested in trying any more out. The website is http://www.picturesudoku.co.uk, and to try the free puzzles it is http://www.picturesudoku.co.uk/sample_pictures.php.
Have a go and let me know what you think!