Click the green flag two times. Drag your mouse over the square you want to fill in and type in the number you want to go there. If you don't know how to play Sudoku puzzles, all you have to do is make sure that the same number is NOT in each square, column, or row more than once. I hope you enjoy this game! More puzzles will come out soon!
Credit to Vexento for music. The rest was done by me. If you experience any glitches, let me know in comments and I will fix them ASAP.