SudokuHard

Hard Sudoku — Puzzle 174

1
6281
839157
3917
94
386
625
192

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.

971684523
654273819
832915764
568391472
417526398
293748651
329857146
746132985
185469237