PlaySudoku.us
Hard · Puzzle #121
4
9
8
1
5
9
6
3
1
3
6
4
7
9
2
1
6
3
9
5
3
2
9
1
5
2
7
"Everything should be made as simple as possible, but not simpler." — Albert Einstein
"Everything should be made as simple as possible, but not simpler." — Albert Einstein
"There is no permanent place in mathematics for ugly mathematics." — G. H. Hardy
"There is no permanent place in mathematics for ugly mathematics." — G. H. Hardy