SudokuHard

Hard Sudoku — Puzzle 34

61
753
435
46
71
5274
7814
6913
28

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.

682954371
715382946
439671825
847513269
396427518
521869734
978136452
264795183
153248697