Solutions for HARD Sudoku Puzzles H71-H80

Here are the original puzzles H71 to H80

Solution for Hard Sudoku Puzzle H71	Solution for Hard Sudoku Puzzle H72
Solution for Hard Sudoku Puzzle H73	Solution for Hard Sudoku Puzzle H74
Solution for Hard Sudoku Puzzle H75	Solution for Hard Sudoku Puzzle H76
Solution for Hard Sudoku Puzzle H77	Solution for Hard Sudoku Puzzle H78
Solution for Hard Sudoku Puzzle H79	Solution for Hard Sudoku Puzzle H80