1
9
5
2
3
7
6
4
8
3
4
7
8
6
1
9
5
2
8
2
6
4
9
5
3
7
1
7
5
9
4
6
1
3
8
2
4
1
8
2
9
3
5
7
6
6
3
2
7
5
8
9
1
4
8
7
3
5
1
4
9
2
6
1
2
4
6
3
9
7
8
5
5
6
9
2
8
7
1
4
3
This Sudoku Puzzle has 60 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Naked Triple, Swordfish, Naked Pair, Naked Single, Full House techniques.
Naked Single
Explanation
Hidden Single
Explanation
Locked Candidates
Explanation
Locked Candidates
Explanation
Full House
Explanation
Solution Steps:
- Row 4 / Column 1 → 7 (Hidden Single)
- Row 8 / Column 9 → 7 (Hidden Single)
- Row 8 / Column 2 → 1 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 5 in b5 => r6c79<>5
- Locked Candidates Type 1 (Pointing): 2 in b6 => r23c9<>2
- Locked Candidates Type 2 (Claiming): 3 in c2 => r13c3,r23c1<>3
- Naked Triple: 3,5,8 in r7c13,r8c1 => r9c3<>5, r9c3<>8
- Swordfish: 5 r258 c189 => r19c8,r7c19<>5
- Naked Pair: 4,8 in r9c58 => r9c46<>4, r9c67<>8
- Swordfish: 9 c258 r125 => r1c347,r25c9<>9
- Row 2 / Column 9 → 5 (Naked Single)
- Row 1 / Column 3 → 5 (Hidden Single)
- Row 8 / Column 1 → 5 (Hidden Single)
- Row 8 / Column 8 → 8 (Naked Single)
- Row 8 / Column 5 → 3 (Full House)
- Row 9 / Column 8 → 4 (Naked Single)
- Row 9 / Column 5 → 8 (Naked Single)
- Row 5 / Column 8 → 5 (Hidden Single)
- Row 1 / Column 7 → 8 (Hidden Single)
- Row 2 / Column 2 → 3 (Hidden Single)
- Row 5 / Column 9 → 8 (Hidden Single)
- Row 4 / Column 6 → 8 (Hidden Single)
- Row 3 / Column 7 → 3 (Hidden Single)
- Row 3 / Column 4 → 9 (Naked Single)
- Row 1 / Column 5 → 4 (Naked Single)
- Row 2 / Column 5 → 6 (Naked Single)
- Row 5 / Column 5 → 9 (Full House)
- Row 3 / Column 9 → 1 (Naked Single)
- Row 4 / Column 4 → 4 (Naked Single)
- Row 2 / Column 1 → 2 (Naked Single)
- Row 2 / Column 8 → 9 (Full House)
- Row 1 / Column 8 → 2 (Full House)
- Row 3 / Column 6 → 2 (Naked Single)
- Row 5 / Column 2 → 6 (Naked Single)
- Row 5 / Column 1 → 4 (Full House)
- Row 7 / Column 9 → 9 (Naked Single)
- Row 6 / Column 4 → 5 (Naked Single)
- Row 6 / Column 6 → 6 (Full House)
- Row 1 / Column 2 → 9 (Naked Single)
- Row 9 / Column 2 → 2 (Full House)
- Row 1 / Column 6 → 7 (Naked Single)
- Row 1 / Column 4 → 3 (Full House)
- Row 6 / Column 1 → 3 (Naked Single)
- Row 4 / Column 9 → 2 (Naked Single)
- Row 6 / Column 9 → 4 (Full House)
- Row 7 / Column 4 → 1 (Naked Single)
- Row 9 / Column 4 → 7 (Full House)
- Row 6 / Column 7 → 9 (Naked Single)
- Row 4 / Column 7 → 6 (Full House)
- Row 4 / Column 3 → 9 (Full House)
- Row 6 / Column 3 → 2 (Full House)
- Row 9 / Column 3 → 6 (Naked Single)
- Row 9 / Column 6 → 5 (Naked Single)
- Row 7 / Column 6 → 4 (Full House)
- Row 9 / Column 7 → 1 (Full House)
- Row 7 / Column 7 → 5 (Full House)
- Row 7 / Column 1 → 8 (Naked Single)
- Row 3 / Column 1 → 6 (Full House)
- Row 3 / Column 3 → 8 (Full House)
- Row 7 / Column 3 → 3 (Full House)
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