Sudoku No. 64
3
2
1
7
6
7
3
1
7
9
6
4
1
7
2
9
2
6
1
9
5
6
3
2
8
1
8
3
9
5
7
1
6
9
7
3
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. 64, gentlePoint Paper, /sudoku/64