SudokuHard

Hard Sudoku — Puzzle 13

42
25841
91
1846
95
47
63478
43
82

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.

168954732
257386419
934712856
791845263
426173985
385269147
613427598
542698371
879531624