SudokuHard

Hard Sudoku — Puzzle 82

143
9637
842
3
17
836
26175
8
4753

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.

172493658
849625317
536187429
325869174
614572893
798341562
263914785
951738246
487256931