PlaySudoku.us
Evil · Puzzle #97
4
3
1
9
4
8
5
8
4
2
3
9
5
8
7
9
4
7
1
9
3
6
7
6
1
The constraint propagation used in Sudoku solving is the same algorithm used in AI planning and automated theorem proving.
The constraint propagation used in Sudoku solving is the same algorithm used in AI planning and automated theorem proving.
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.