SudokuHard

Hard Sudoku — Puzzle 225

4632
5647
827
89
67
98426
518
25
7

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.

476981352
532647198
819523674
764832519
253196487
981475236
695218743
328754961
147369825