SudokuHard

Hard Sudoku — Puzzle 27

97
3684
341
61
8476
128
72
3574
89

How to play

Fill every row, every column and every 3 by 3 box with the numbers 1 to 9, using each number once.

This puzzle has 26 given numbers and exactly one solution, so it can always be finished by reasoning alone.

491287356
573916284
268345971
657134829
384792165
912568437
749623518
135879642
826451793