1
7
2
3
8
2
9
4
7
2
3
8
4
1
3
5
2
7
2
3
5
8
9
1
8
5
1
2
6
3
4
5
2
1
2
5
1
2
4
3
This Sudoku Puzzle has 19 steps and it is solved using Naked Single, Full House, Hidden Single, Locked Candidates Type 1 (Pointing), undefined, Give Up techniques.
Naked Single
Explanation
Hidden Single
Explanation
Locked Candidates
Explanation
Full House
Explanation
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