PlaySudoku.us
Hard · Puzzle #349
2
9
3
1
6
5
7
6
8
9
1
2
2
3
5
7
6
2
8
3
1
7
4
5
3
7
1
6
1
8
"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.