PlaySudoku.us
Hard · Puzzle #12
4
7
5
2
3
6
4
1
6
2
9
8
1
9
1
7
6
7
1
9
3
1
9
5
5
9
8
3
Sudoku was popularized worldwide by Wayne Gould, who spent 6 years writing a computer program to generate puzzles.
Sudoku was popularized worldwide by Wayne Gould, who spent 6 years writing a computer program to generate puzzles.
Sudoku was popularized worldwide by Wayne Gould, who spent 6 years writing a computer program to generate puzzles.
Sudoku was popularized worldwide by Wayne Gould, who spent 6 years writing a computer program to generate puzzles.