Sudoku No. 77
6
1
7
5
2
8
1
3
6
7
4
6
8
9
8
1
2
7
7
9
8
9
3
6
5
6
9
2
Fill every empty square with a digit from 1 to 9.
Each row, each column and each of the nine 3×3 boxes contains every digit exactly once.
The printed digits are fixed. Every puzzle has one solution and never needs a guess.
Sudoku No. 77, moderatePoint Paper, /sudoku/77