PlaySudoku.us
Hard · Puzzle #233
9
5
7
6
3
1
5
9
6
5
6
4
2
1
5
8
3
7
6
4
3
7
8
9
2
4
6
5
9
"Chess is the touchstone of intellect." — Johann Wolfgang von Goethe
"Chess is the touchstone of intellect." — Johann Wolfgang von Goethe
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.