1
7
6
3
4
9
2
8
5
8
9
3
7
5
2
1
6
4
5
4
2
1
8
6
7
9
3
8
5
1
4
3
7
6
9
2
2
3
6
9
8
5
4
1
7
9
7
4
2
6
1
3
5
8
7
1
3
5
6
8
9
2
4
5
4
8
3
2
9
6
7
1
6
2
9
4
1
7
8
3
5
This Sudoku Puzzle has 43 steps and it is solved using Naked Single, Locked Pair, Full House techniques.
Naked Single
Explanation
Full House
Explanation
Solution Steps:
- Row 6 / Column 4 → 4 (Naked Single)
- Locked Pair: 4,8 in r23c2 => r1c12,r45c2<>4, r456c2<>8
- Row 1 / Column 2 → 7 (Naked Single)
- Row 5 / Column 2 → 3 (Naked Single)
- Row 5 / Column 7 → 2 (Naked Single)
- Row 6 / Column 9 → 8 (Naked Single)
- Row 6 / Column 1 → 6 (Naked Single)
- Row 6 / Column 6 → 7 (Naked Single)
- Row 1 / Column 1 → 1 (Naked Single)
- Row 5 / Column 5 → 8 (Naked Single)
- Row 4 / Column 5 → 3 (Full House)
- Row 6 / Column 3 → 2 (Naked Single)
- Row 9 / Column 6 → 1 (Naked Single)
- Row 1 / Column 3 → 6 (Naked Single)
- Row 5 / Column 1 → 4 (Naked Single)
- Row 4 / Column 1 → 8 (Full House)
- Row 7 / Column 5 → 4 (Naked Single)
- Row 7 / Column 6 → 8 (Full House)
- Row 3 / Column 6 → 4 (Full House)
- Row 9 / Column 4 → 6 (Naked Single)
- Row 3 / Column 4 → 1 (Full House)
- Row 9 / Column 5 → 7 (Full House)
- Row 5 / Column 9 → 1 (Naked Single)
- Row 2 / Column 5 → 5 (Naked Single)
- Row 3 / Column 2 → 8 (Naked Single)
- Row 2 / Column 2 → 4 (Full House)
- Row 2 / Column 8 → 8 (Full House)
- Row 4 / Column 9 → 4 (Naked Single)
- Row 1 / Column 9 → 2 (Full House)
- Row 5 / Column 3 → 7 (Naked Single)
- Row 4 / Column 3 → 1 (Full House)
- Row 5 / Column 8 → 6 (Full House)
- Row 1 / Column 5 → 9 (Naked Single)
- Row 3 / Column 5 → 6 (Full House)
- Row 3 / Column 8 → 9 (Full House)
- Row 1 / Column 7 → 5 (Naked Single)
- Row 1 / Column 8 → 4 (Full House)
- Row 6 / Column 8 → 5 (Naked Single)
- Row 4 / Column 8 → 7 (Full House)
- Row 4 / Column 7 → 9 (Naked Single)
- Row 4 / Column 2 → 5 (Full House)
- Row 6 / Column 2 → 9 (Full House)
- Row 6 / Column 7 → 3 (Full House)
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