4
9
5
6
7
3
1
2
8
2
1
4
5
8
1
5
2
4
9
9
6
4
2
1
5
7
3
1
9
5
2
4
2
5
4
9
1
4
9
8
1
2
5
6
1
2
5
4
8
5
3
9
1
4
2
This Sudoku Puzzle has 28 steps and it is solved using Locked Candidates Type 1 (Pointing), Remote Pair, Naked Single, Full House techniques.
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