PlaySudoku.us
Medium · Puzzle #664
2
4
3
9
5
8
6
5
9
7
4
1
3
8
2
2
9
6
3
5
3
1
9
3
1
1
4
6
3
9
1
2
5
6
"I think, therefore I am." — René Descartes
"I think, therefore I am." — René Descartes
Wayne Gould distributed his Sudoku software for free to newspapers — he made his money selling puzzle books.
Wayne Gould distributed his Sudoku software for free to newspapers — he made his money selling puzzle books.