SudokuHard

Hard Sudoku — Puzzle 115

741
75284
9
31
584
416
26
6375
314

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.

683724951
971563284
245918763
396275418
518496372
427381695
759142836
164837529
832659147