1
4
7
2
5
8
3
6
9
8
9
5
1
6
3
2
7
4
6
3
2
4
9
7
1
5
8
5
7
2
9
6
4
5
8
3
6
3
8
5
2
1
7
4
9
9
1
4
8
7
3
5
2
6
4
2
5
7
9
1
8
3
6
3
1
6
4
8
2
9
5
7
7
8
9
3
6
5
2
4
1
This Sudoku Puzzle has 30 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Naked Single, Full House techniques.
Naked Single
Explanation
Hidden Single
Explanation
Locked Candidates
Explanation
Locked Candidates
Explanation
Full House
Explanation
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