PlaySudoku.us
Hard · Puzzle #576
6
8
3
7
9
6
7
5
1
7
4
2
6
3
5
9
3
1
7
9
8
3
2
8
7
5
8
3
"In mathematics you don't understand things. You just get used to them." — John von Neumann
"In mathematics you don't understand things. You just get used to them." — John von Neumann
The first modern Sudoku puzzle was published in 1979 by Howard Garns in Dell Pencil Puzzles & Word Games.
The first modern Sudoku puzzle was published in 1979 by Howard Garns in Dell Pencil Puzzles & Word Games.