PlaySudoku.us
Evil · Puzzle #921
9
5
1
8
6
2
5
8
3
4
2
1
5
9
4
3
2
1
8
3
4
9
7
5
2
6
Techniques used
- Naked Single
- Hidden Single
- Pointing Pair
- Pointing Triple
- Box-Line Reduction
- Forcing Chains
- Naked Pair
In combinatorics, the pattern formed by Sudoku clue cells is studied as a problem in 'hitting sets' and transversals.
In combinatorics, the pattern formed by Sudoku clue cells is studied as a problem in 'hitting sets' and transversals.
"Stay hungry, stay foolish." — Steve Jobs
"Stay hungry, stay foolish." — Steve Jobs