SudokuHard

Hard Sudoku — Puzzle 294

56
12745
32514
9568
91
86
456
753
4

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 27 given numbers and exactly one solution, so it can always be finished by reasoning alone.

574683192
691274853
382519746
915327684
243865971
867491325
438956217
126748539
759132468