ReallyEvilCanine is his blogname and he is blogging from Munich in Germany.
At his blog called “A Day in a Life” he wrote a great article on how to solve Greater Than Sudoku’s which you can find at Killer Sudoku Online.
In almost 50 steps he will help you to solve Greater Than Sudoku’s. Using a simple code and a lot of colored images to show you how he solves Greater Than Sudoku’s.
It most have take a lot of work to work this out but it will definitely help you with solving this lovely Sudoku variant. Happy Puzzling!