Solution for Evil Sudoku #4368742391540
5
4
2
9
1
8
3
7
6
8
6
7
4
3
2
1
9
5
1
3
9
7
5
6
2
4
8
6
2
7
8
3
5
4
9
1
9
1
4
7
2
6
5
8
3
3
8
5
4
9
1
6
7
2
7
8
3
1
5
4
2
6
9
2
5
1
6
7
9
3
4
8
9
6
4
8
2
3
5
1
7
This Sudoku Puzzle has 61 steps and it is solved using Naked Single, Hidden Single, Full House, Locked Candidates Type 1 (Pointing), Naked Triple, Hidden Pair, Skyscraper, Uniqueness Test 1 techniques.
Naked Single
Explanation
Hidden Single
Explanation
Hidden Pair
Explanation
Locked Candidates
Explanation
Full House
Explanation
Solution Steps:
- Row 8 / Column 6 → 9 (Naked Single)
- Row 7 / Column 6 → 1 (Naked Single)
- Row 3 / Column 2 → 7 (Hidden Single)
- Row 8 / Column 2 → 5 (Naked Single)
- Row 9 / Column 9 → 7 (Hidden Single)
- Row 9 / Column 1 → 2 (Naked Single)
- Row 7 / Column 1 → 7 (Naked Single)
- Row 9 / Column 3 → 9 (Naked Single)
- Row 7 / Column 3 → 3 (Full House)
- Row 9 / Column 5 → 4 (Naked Single)
- Row 7 / Column 4 → 2 (Naked Single)
- Row 8 / Column 5 → 7 (Full House)
- Row 7 / Column 7 → 9 (Naked Single)
- Row 7 / Column 8 → 6 (Full House)
- Row 2 / Column 5 → 3 (Hidden Single)
- Row 5 / Column 4 → 7 (Hidden Single)
- Row 2 / Column 4 → 4 (Hidden Single)
- Row 2 / Column 2 → 1 (Naked Single)
- Row 1 / Column 2 → 4 (Naked Single)
- Row 1 / Column 9 → 9 (Hidden Single)
- Row 9 / Column 8 → 1 (Hidden Single)
- Row 9 / Column 7 → 5 (Full House)
- Row 6 / Column 3 → 1 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 5 in b2 => r3c39<>5
- Row 2 / Column 8 → 5 (Hidden Single)
- Row 2 / Column 3 → 8 (Full House)
- Naked Triple: 1,2,8 in r138c7 => r4c7<>8, r5c7<>2
- Hidden Pair: 2,8 in r6c59 => r6c9<>5
- Row 4 / Column 9 → 5 (Hidden Single)
- Naked Triple: 3,4,6 in r4c167 => r4c5<>6
- Skyscraper: 6 in r3c3,r4c1 (connected by r34c6) => r1c1,r5c3<>6
- Row 1 / Column 1 → 5 (Naked Single)
- Row 5 / Column 3 → 5 (Naked Single)
- Row 6 / Column 1 → 4 (Naked Single)
- Row 4 / Column 1 → 6 (Full House)
- Uniqueness Test 1: 3/4 in r4c67,r5c67 => r5c6<>3, r5c6<>4
- Row 5 / Column 6 → 6 (Naked Single)
- Row 3 / Column 6 → 5 (Naked Single)
- Row 5 / Column 5 → 2 (Naked Single)
- Row 3 / Column 4 → 1 (Naked Single)
- Row 1 / Column 5 → 6 (Full House)
- Row 6 / Column 6 → 3 (Naked Single)
- Row 4 / Column 6 → 4 (Full House)
- Row 5 / Column 8 → 9 (Naked Single)
- Row 6 / Column 5 → 8 (Naked Single)
- Row 4 / Column 5 → 1 (Full House)
- Row 4 / Column 4 → 9 (Naked Single)
- Row 6 / Column 4 → 5 (Full House)
- Row 1 / Column 3 → 2 (Naked Single)
- Row 1 / Column 7 → 1 (Full House)
- Row 3 / Column 3 → 6 (Full House)
- Row 6 / Column 2 → 9 (Naked Single)
- Row 5 / Column 2 → 3 (Full House)
- Row 6 / Column 9 → 2 (Full House)
- Row 5 / Column 7 → 4 (Full House)
- Row 3 / Column 9 → 8 (Full House)
- Row 3 / Column 7 → 2 (Full House)
- Row 4 / Column 7 → 3 (Naked Single)
- Row 4 / Column 8 → 8 (Full House)
- Row 8 / Column 7 → 8 (Full House)
- Row 8 / Column 8 → 2 (Full House)
Show More...