SudokuHard

Hard Sudoku — Puzzle 209

28
517
62
32
538917
9736
1
68
8763

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.

379514628
518623794
462897351
781936245
653482917
294175836
936741582
125368479
847259163