PlaySudoku.us
Easy · Puzzle #38
2
8
9
3
5
8
4
2
5
9
3
9
4
7
2
1
2
8
5
8
4
6
3
4
8
2
2
3
1
8
7
4
6
9
1
4
2
5
3
8
4
5
8
6
2
1
9
The longest Sudoku solving session in a competitive setting lasted over 8 hours — an endurance format.
The longest Sudoku solving session in a competitive setting lasted over 8 hours — an endurance format.
The P vs. NP problem — the biggest open question in computer science — would be impacted if Sudoku generalizations could be solved in polynomial time.
The P vs. NP problem — the biggest open question in computer science — would be impacted if Sudoku generalizations could be solved in polynomial time.