SudokuHard

Hard Sudoku — Puzzle 218

9835
9864
3
68
45239
839
7561
3697

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 27 given numbers and exactly one solution, so it can always be finished by reasoning alone.

412798635
958364217
736512894
697135428
145827369
823649751
279456183
364981572
581273946