PlaySudoku.us
Hard · Puzzle #417
8
7
8
5
9
1
6
5
2
3
8
4
1
2
5
3
7
1
4
3
9
6
2
8
5
1
4
8
"Try to be a rainbow in someone's cloud." — Maya Angelou
"Try to be a rainbow in someone's cloud." — Maya Angelou
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.