One of my After School Extension (ASE) is Sudoku. In there, students would get a printed sudoku grid from the facilitator and try to solve it. Depending on the students’ ability and experience, they might pick a different difficulty. There are four options of difficulty including easy, medium, hard, and diabolic. I always go for the hard sudoku but sometimes I go for the diabolic sudoku. To me, sudoku is a strategy game that requires a lot of patience.