PlaySudoku.us
Medium · Puzzle #891
9
4
7
7
2
6
6
1
5
1
5
3
7
2
6
4
7
8
5
9
5
6
3
7
9
9
6
4
9
2
4
7
1
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 average newspaper Sudoku takes about 20 minutes to solve for an experienced solver.
The average newspaper Sudoku takes about 20 minutes to solve for an experienced solver.