?This information was found on Mail Online of the Daily Mail dated 29th January 2009.

Someone in UK has put up his house worth? ?675,000 as the grand prize in a Sudoku Competition.? Dave Mackie, 49, hopes to get 14,000 sudoku enthusiasts to pay ?50 to enter the competition after? solving an online Sudoku Puzzle on his website. The winner will be determined by a raffle draw.

This was a novel idea and probably the first of its kind. We will have to wait until Feb 2010 to find out if he succeeded.

Source: The Daily Mail