SudokuHard

Hard Sudoku — Puzzle 86

8759
27
43
376248
4275
1248
9
716

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.

823671594
461539827
579428361
986342175
357916248
142785639
715264983
638197452
294853716