PlaySudoku.us
Evil · Puzzle #902
4
9
4
7
5
6
9
3
1
1
7
2
6
8
2
5
4
8
5
1
7
3
9
6
2
"Learning never exhausts the mind." — Leonardo da Vinci
"Learning never exhausts the mind." — Leonardo da Vinci
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.