PlaySudoku.us
Hard · Puzzle #937
5
6
2
1
5
9
4
1
3
4
2
6
6
4
8
5
6
9
4
8
1
5
5
3
2
6
"I was taught that the way of progress was neither swift nor easy." — Marie Curie
"I was taught that the way of progress was neither swift nor easy." — Marie Curie
The maximum number of givens in a Sudoku that still leaves the rest logically deducible (no trivial completion) can exceed 77.
The maximum number of givens in a Sudoku that still leaves the rest logically deducible (no trivial completion) can exceed 77.