1
8
6
5
3
9
5
2
1
9
7
7
1
1
8
4
9
2
6
7
2
6
3
3
This Sudoku Puzzle has 60 steps and it is solved using Hidden Single, Naked Single, Full House, Locked Candidates Type 1 (Pointing), Uniqueness Test 1, undefined techniques.
Naked Single
Explanation
Hidden Single
Explanation
Locked Candidates
Explanation
Full House
Explanation
Solution Steps:
- Row 2 / Column 4 → 1 (Hidden Single)
- Row 4 / Column 2 → 1 (Hidden Single)
- Row 5 / Column 5 → 6 (Hidden Single)
- Row 1 / Column 3 → 6 (Hidden Single)
- Row 8 / Column 3 → 1 (Hidden Single)
- Row 9 / Column 6 → 1 (Hidden Single)
- Row 3 / Column 4 → 3 (Hidden Single)
- Row 2 / Column 2 → 9 (Hidden Single)
- Row 1 / Column 2 → 8 (Hidden Single)
- Row 3 / Column 3 → 2 (Naked Single)
- Row 8 / Column 2 → 5 (Naked Single)
- Row 3 / Column 2 → 4 (Naked Single)
- Row 7 / Column 2 → 3 (Naked Single)
- Row 6 / Column 2 → 2 (Full House)
- Row 7 / Column 1 → 8 (Full House)
- Row 3 / Column 1 → 7 (Naked Single)
- Row 3 / Column 5 → 9 (Naked Single)
- Row 7 / Column 5 → 5 (Naked Single)
- Row 9 / Column 5 → 4 (Naked Single)
- Row 1 / Column 5 → 2 (Full House)
- Row 7 / Column 9 → 1 (Hidden Single)
- Row 1 / Column 4 → 7 (Hidden Single)
- Row 1 / Column 6 → 4 (Full House)
- Row 5 / Column 3 → 8 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 9 in b9 => r5c7<>9
- Uniqueness Test 1: 3/5 in r2c13,r6c13 => r6c1<>3, r6c1<>5
- XY-Chain: 7 7- r7c8 -6- r3c8 -8- r9c8 -5- r9c7 -9- r9c4 -8- r8c6 -7 => r7c6,r8c789<>7
- Row 7 / Column 6 → 9 (Naked Single)
- Row 6 / Column 6 → 3 (Naked Single)
- Row 9 / Column 4 → 8 (Naked Single)
- Row 8 / Column 6 → 7 (Full House)
- Row 5 / Column 6 → 2 (Naked Single)
- Row 4 / Column 6 → 8 (Full House)
- Row 6 / Column 3 → 5 (Naked Single)
- Row 2 / Column 3 → 3 (Full House)
- Row 2 / Column 1 → 5 (Full House)
- Row 9 / Column 8 → 5 (Naked Single)
- Row 9 / Column 7 → 9 (Full House)
- Row 6 / Column 9 → 7 (Hidden Single)
- Row 5 / Column 1 → 3 (Hidden Single)
- Row 4 / Column 8 → 3 (Hidden Single)
- Row 6 / Column 4 → 9 (Hidden Single)
- Row 5 / Column 9 → 9 (Hidden Single)
- Row 4 / Column 7 → 2 (Hidden Single)
- Row 8 / Column 7 → 4 (Naked Single)
- Row 2 / Column 7 → 7 (Naked Single)
- Row 2 / Column 8 → 4 (Full House)
- Row 5 / Column 7 → 5 (Naked Single)
- Row 7 / Column 7 → 6 (Full House)
- Row 5 / Column 4 → 4 (Full House)
- Row 7 / Column 8 → 7 (Full House)
- Row 4 / Column 4 → 5 (Full House)
- Row 8 / Column 9 → 8 (Naked Single)
- Row 8 / Column 8 → 2 (Full House)
- Row 6 / Column 8 → 6 (Naked Single)
- Row 3 / Column 8 → 8 (Full House)
- Row 3 / Column 9 → 6 (Full House)
- Row 4 / Column 9 → 4 (Full House)
- Row 6 / Column 1 → 4 (Full House)
- Row 4 / Column 1 → 6 (Full House)
Show More...