PlaySudoku.us
Easy · Puzzle #481
5
6
4
9
9
2
8
1
5
4
1
9
3
6
7
2
9
1
5
6
9
3
7
2
8
6
9
8
2
4
6
7
3
4
6
9
7
8
2
7
8
2
6
4
9
3
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.