SudokuHard

Hard Sudoku — Puzzle 273

234
6
6749
263
72569
19
583
587
98

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.

923485176
457691823
861327495
296574381
714832569
385169742
172958634
538246917
649713258