SudokuHard

Hard Sudoku — Puzzle 114

257
31
485
79
3269
1825
92
498
137

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.

215946873
986273154
374815629
847351296
532694781
169782435
753468912
491527368
628139547