PlaySudoku.us
Evil · Puzzle #259
8
7
3
4
9
8
5
7
6
1
2
9
6
5
7
1
3
2
9
5
4
1
1
8
5
Techniques used
- Naked Single
- Hidden Single
- Pointing Pair
- Forcing Chains
- Finned X-Wing
"Absence of evidence is not evidence of absence." — Carl Sagan
"Absence of evidence is not evidence of absence." — Carl Sagan
On average, a hard Sudoku requires 50–100 candidate eliminations before the grid is fully solved.
On average, a hard Sudoku requires 50–100 candidate eliminations before the grid is fully solved.