SudokuHard

Hard Sudoku — Puzzle 108

243
761
82
259
938
931
6473
76481

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.

512478369
736912548
498635127
187254936
265793814
943861752
654189273
379526481
821347695