1
8
4
2
6
7
4
2
1
3
9
8
1
4
2
4
2
3
1
3
2
5
4
4
2
1
3
9
2
9
4
1
5
6
3
3
9
2
8
2
3
9
1
This Sudoku Puzzle has 39 steps and it is solved using Locked Candidates Type 1 (Pointing), Hidden Single, Full House, Naked Single techniques.
Naked Single
Explanation
Hidden Single
Explanation
Locked Candidates
Explanation
Full House
Explanation
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