PlaySudoku.us
Hard · Puzzle #454
4
8
2
9
6
7
4
3
3
1
5
9
7
6
9
3
5
2
8
3
6
4
8
4
5
1
"To ask the right question is harder than to answer it." — Georg Cantor
"To ask the right question is harder than to answer it." — Georg Cantor
"An expert is someone who has made all the mistakes which can be made in a very narrow field." — Niels Bohr
"An expert is someone who has made all the mistakes which can be made in a very narrow field." — Niels Bohr