SudokuHard

Hard Sudoku — Puzzle 192

34
5918
891
826
5
7
395
9624
31582

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.

817352964
594761328
263489517
378924651
649135782
125876439
782643195
956217843
431598276