SudokuHard

Hard Sudoku — Puzzle 1

46
58692
9231
23
9
245
3271
874
86

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.

324819657
518367924
796452831
165278349
873194562
249635178
932786415
687541293
451923786