Solution for Evil Sudoku #4276195482340
8
7
6
4
3
9
2
1
5
3
2
5
6
8
1
4
9
7
9
4
1
7
5
2
8
6
3
1
5
3
7
4
8
6
9
2
9
7
4
2
5
6
8
1
3
2
8
6
3
1
9
5
7
4
5
6
7
9
2
1
3
8
4
1
3
2
5
4
8
7
6
9
4
9
8
6
3
7
1
2
5
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 4 / Column 8 → 8 (Naked Single)
- Row 4 / Column 7 → 2 (Naked Single)
- Row 1 / Column 9 → 1 (Hidden Single)
- Row 5 / Column 9 → 9 (Hidden Single)
- Row 2 / Column 7 → 7 (Hidden Single)
- Row 5 / Column 2 → 4 (Hidden Single)
- Row 7 / Column 7 → 4 (Hidden Single)
- Row 8 / Column 3 → 1 (Hidden Single)
- Row 8 / Column 8 → 3 (Naked Single)
- Row 9 / Column 9 → 5 (Naked Single)
- Row 7 / Column 9 → 8 (Naked Single)
- Row 9 / Column 7 → 1 (Full House)
- Row 6 / Column 7 → 5 (Naked Single)
- Row 3 / Column 7 → 8 (Full House)
- Row 5 / Column 8 → 1 (Full House)
- Row 6 / Column 2 → 9 (Hidden Single)
- Row 8 / Column 2 → 2 (Naked Single)
- Row 8 / Column 1 → 9 (Naked Single)
- Row 6 / Column 5 → 1 (Hidden Single)
- Row 1 / Column 1 → 8 (Hidden Single)
- Row 2 / Column 9 → 2 (Hidden Single)
- Row 3 / Column 9 → 3 (Full House)
- Row 7 / Column 6 → 2 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 3 in b4 => r17c3<>3
- Row 2 / Column 2 → 3 (Hidden Single)
- Row 7 / Column 2 → 6 (Full House)
- Naked Triple: 2,5,6 in r3c138 => r3c4<>6, r3c5<>5
- Hidden Pair: 5,6 in r15c6 => r1c6<>3
- Row 1 / Column 4 → 3 (Hidden Single)
- Naked Triple: 4,7,9 in r349c4 => r5c4<>7
- Skyscraper: 7 in r5c5,r9c4 (connected by r59c1) => r4c4,r7c5<>7
- Row 7 / Column 5 → 3 (Naked Single)
- Row 9 / Column 6 → 9 (Naked Single)
- Row 9 / Column 4 → 7 (Naked Single)
- Row 9 / Column 1 → 3 (Full House)
- Uniqueness Test 1: 4/9 in r3c45,r4c45 => r4c5<>4, r4c5<>9
- Row 4 / Column 5 → 7 (Naked Single)
- Row 4 / Column 3 → 3 (Naked Single)
- Row 5 / Column 5 → 5 (Naked Single)
- Row 4 / Column 6 → 4 (Naked Single)
- Row 4 / Column 4 → 9 (Full House)
- Row 6 / Column 3 → 2 (Naked Single)
- Row 5 / Column 1 → 7 (Full House)
- Row 2 / Column 5 → 8 (Naked Single)
- Row 5 / Column 6 → 6 (Naked Single)
- Row 5 / Column 4 → 2 (Full House)
- Row 8 / Column 6 → 8 (Naked Single)
- Row 8 / Column 5 → 4 (Full House)
- Row 3 / Column 5 → 9 (Full House)
- Row 3 / Column 4 → 4 (Naked Single)
- Row 6 / Column 4 → 8 (Naked Single)
- Row 2 / Column 4 → 6 (Full House)
- Row 1 / Column 6 → 5 (Full House)
- Row 6 / Column 6 → 3 (Full House)
- Row 2 / Column 8 → 5 (Full House)
- Row 1 / Column 3 → 6 (Full House)
- Row 3 / Column 8 → 6 (Full House)
- Row 7 / Column 1 → 5 (Naked Single)
- Row 3 / Column 1 → 2 (Full House)
- Row 3 / Column 3 → 5 (Full House)
- Row 7 / Column 3 → 7 (Full House)
Show More...