SudokuHard

Hard Sudoku — Puzzle 167

24
632
41
687
834
7
4691
97156
342

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.

261435798
578916432
349728516
496587123
782341965
135692847
854269371
927153684
613874259