The World's Hardest Sudoku (June 2012)

[awein999]

Most people who actually solve this did so via guess and check, after you get a couple numbers filled in correctly it's not that hard. This puzzle is solvable completely by pure logic as all sudokus are meant to be. Discuss any type of logic and strategy here. Obviously seeing that you got it "all correct" is of no value if you don't have a logical explanation as to how you got your first number. I'm currently working on it now. half an hour or so the past three days and making some progress with my current approach. Hoping to get my first number after 3 more hours.

To put this into perspective, sudokus are officially judged on a scale of stars from 1-5. This puzzle scores 11.