PlaySudoku.us
Hard · Puzzle #567
3
6
1
5
9
8
1
7
5
2
2
6
6
2
7
4
9
8
5
7
5
4
2
3
6
9
3
2
"If I have seen further, it is by standing on the shoulders of giants." — Isaac Newton
"If I have seen further, it is by standing on the shoulders of giants." — Isaac Newton
Hidden Triple: three digits each appearing in only three cells within a group — eliminate all other candidates from those three cells.
Hidden Triple: three digits each appearing in only three cells within a group — eliminate all other candidates from those three cells.