SudokuHard

Hard Sudoku — Puzzle 287

8273
497
372
51
163
95
4761
4
9547

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.

982176534
154392786
367845912
543628197
218957643
796413258
435761829
871239465
629584371