SudokuHard

Hard Sudoku — Puzzle 242

27
21
946
4
1963
8395
8561
2869
74

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.

542319867
836725149
917486325
293854716
154967238
768231954
385692471
421578693
679143582