SudokuHard

Hard Sudoku — Puzzle 235

1
874
58
931
12783
6295
54
923
673

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.

254983617
831657249
967142538
795836124
142579863
386214795
523468971
419725386
678391452