SudokuHard

Hard Sudoku — Puzzle 230

89
675
5432
5742
91
293
264
172
17

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.

831295674
624718395
957436281
319587426
746923518
582164937
265879143
173642859
498351762