SudokuHard

Hard Sudoku — Puzzle 26

8534
2
4567
2169
549
623
39
7182
4

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.

182975634
967384521
435261978
216739485
573148296
894652713
349517862
751826349
628493157