SudokuHard

Hard Sudoku — Puzzle 233

123
984
8351
35
478
72
6953
4
8164

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.

476125398
513986427
928743516
632598174
194372865
785461932
269814753
347259681
851637249