Advanced Sudoku technique Y-wing and XY Wing

No matter where you look, it seems everyone is trying sudoku. From housewives to business men, this numbered game is not only becoming the latest craze for passing the time, but it's also been touted as being helpful for boosting your memory and preventing memory associated diseases. If you're interest in learning to play, the game is actually simpler than it looks. However, that doesn't mean you won't get stuck once in a while – though it's fun to try to figure your way out of a Sudoku fix.