SudokuHard

Hard Sudoku — Puzzle 83

8
29
613
286
352
57
47235
94
38521

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.

813546972
529873461
746219538
174328659
635491827
298657143
461782395
952134786
387965214