SudokuHard

Hard Sudoku — Puzzle 191

21
196
74
528
79
8519
6498
37
4529

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.

928356714
453178926
716294358
579642183
162783549
834519672
641927835
295831467
387465291