SudokuMedium

Medium Sudoku — Puzzle 129

3615
287
431
57
7956
5428
54917
1475
458

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 32 given numbers and exactly one solution, so it can always be finished by reasoning alone.

836194725
951287634
472563981
384956172
729318546
615742893
568429317
143875269
297631458