Sudoku No. 63
6
8
4
2
1
9
6
1
5
2
7
3
8
5
6
9
7
5
1
4
6
9
3
7
1
5
2
3
4
9
4
7
2
9
6
5
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. 63, gentlePoint Paper, /sudoku/63