5
7
4
9
8
6
1
2
3
2
8
1
4
5
3
6
9
7
9
3
6
1
2
7
4
5
8
6
1
8
4
9
7
2
3
5
9
7
5
8
3
2
1
6
4
3
4
2
5
6
1
7
8
9
3
5
1
7
6
2
8
4
9
7
2
8
5
4
9
3
1
6
6
9
4
8
1
3
2
7
5
This Sudoku Puzzle has 31 steps and it is solved using Locked Candidates Type 1 (Pointing), Hidden Single, Naked Single, Full House techniques.
Naked Single
Explanation
Hidden Single
Explanation
Locked Candidates
Explanation
Full House
Explanation
Show More...