SudokuHard

Hard Sudoku — Puzzle 182

519
3524
3
42
628
582
438
371
1587

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.

531429876
876135249
924687315
413968752
692574183
758312964
269741538
387256491
145893627