PlaySudoku.us
Medium · Puzzle #64
2
5
3
7
8
6
9
1
7
4
8
7
4
9
2
8
1
2
3
2
1
3
8
4
5
6
3
1
5
6
1
6
9
"If I have seen further, it is by standing on the shoulders of giants." — Isaac Newton
"If I have seen further, it is by standing on the shoulders of giants." — Isaac Newton
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.