Hard 4th of July Sudoku

Oh say can you see! Its Hard 4th of July Sudoku! If you have been playing Medium 4th of July Sudoku and are ready for more of a challenge, you have come to the right place! Online sudoku meets its match with this version of the popular strategy game. Though Hard 4th of July Suduku is played like all easier sudoku games on the 4th of July Sudoku site, do not be fooled into thinking it is just as easy!