Hard Halloween Sudoku

Skip the festival of the dead this Halloween. If you want something really scary play Hard Halloween Sudoku! Adios Medium Halloween Sudoku! Hard Halloween Sudoku is where the big ghosts play! But do not leave this haunted house sudoku in a panic yet! Hard Halloween Sudoku is played the same as it's easier counterparts, you will have to fill this online strategy game with the digits 1 through 9.