# Solution for Evil Sudoku #1271713524895

1
8
3
4
2
7
7
3
7
7
1
2
5
8
7
1
7
3
7
8
1
4
1
1
5
4

This Sudoku Puzzle has 62 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Naked Single, Full House, Locked Triple, Naked Pair, Avoidable Rectangle Type 1 techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Row 2 / Column 4 → 7 (Hidden Single)
2. Row 8 / Column 6 → 7 (Hidden Single)
3. Row 7 / Column 1 → 4 (Hidden Single)
4. Row 3 / Column 4 → 1 (Hidden Single)
5. Row 9 / Column 4 → 8 (Hidden Single)
6. Row 7 / Column 4 → 2 (Hidden Single)
7. Locked Candidates Type 1 (Pointing): 4 in b3 => r5c9<>4
8. Locked Candidates Type 1 (Pointing): 5 in b7 => r9c5<>5
9. Locked Candidates Type 2 (Claiming): 6 in c4 => r46c6,r5c5<>6
10. Locked Candidates Type 2 (Claiming): 9 in c4 => r46c6,r5c5<>9
11. Row 5 / Column 5 → 3 (Naked Single)
12. Row 6 / Column 6 → 4 (Naked Single)
13. Row 4 / Column 6 → 4 (Naked Single)
14. Row 7 / Column 6 → 3 (Hidden Single)
15. Row 5 / Column 7 → 4 (Hidden Single)
16. Row 7 / Column 5 → 5 (Hidden Single)
17. Row 3 / Column 2 → 4 (Hidden Single)
18. Row 9 / Column 5 → 6 (Hidden Single)
19. Row 1 / Column 9 → 4 (Hidden Single)
20. Row 3 / Column 9 → 8 (Hidden Single)
21. Row 3 / Column 5 → 9 (Naked Single)
22. Row 1 / Column 5 → 8 (Full House)
23. Row 1 / Column 8 → 2 (Hidden Single)
24. Locked Triple: 2,6,9 in r5c123 => r4c23,r5c89,r6c2<>6, r4c23,r5c89,r6c2<>9, r5c9,r6c2<>2
25. Row 5 / Column 8 → 9 (Naked Single)
26. Row 5 / Column 9 → 9 (Naked Single)
27. Row 9 / Column 9 → 2 (Naked Single)
28. Row 6 / Column 7 → 2 (Hidden Single)
29. Row 4 / Column 4 → 9 (Hidden Single)
30. Row 6 / Column 4 → 6 (Full House)
31. Row 2 / Column 7 → 9 (Hidden Single)
32. Row 7 / Column 7 → 6 (Naked Single)
33. Row 7 / Column 8 → 1 (Full House)
34. Row 7 / Column 9 → 1 (Full House)
35. Row 9 / Column 7 → 3 (Naked Single)
36. Row 8 / Column 7 → 8 (Full House)
37. Row 8 / Column 8 → 8 (Naked Single)
38. Row 2 / Column 9 → 6 (Naked Single)
39. Row 2 / Column 8 → 5 (Full House)
40. Row 2 / Column 2 → 3 (Full House)
41. Row 2 / Column 3 → 3 (Full House)
42. Row 6 / Column 8 → 5 (Naked Single)
43. Row 4 / Column 8 → 6 (Naked Single)
44. Row 4 / Column 3 → 5 (Naked Single)
45. Row 6 / Column 2 → 8 (Naked Single)
46. Row 4 / Column 2 → 8 (Naked Single)
47. Row 8 / Column 1 → 3 (Hidden Single)
48. Row 9 / Column 2 → 5 (Hidden Single)
49. Row 9 / Column 1 → 9 (Full House)
50. Row 1 / Column 3 → 9 (Hidden Single)
51. Naked Pair: 2,6 in r5c12 => r5c3<>2, r5c3<>6
52. Row 5 / Column 3 → 6 (Naked Single)
53. Row 3 / Column 3 → 2 (Naked Single)
54. Row 5 / Column 1 → 2 (Naked Single)
55. Row 5 / Column 2 → 2 (Naked Single)
56. Row 8 / Column 3 → 2 (Naked Single)
57. Row 8 / Column 2 → 6 (Naked Single)
58. Avoidable Rectangle Type 1: 2/6 in r3c13,r5c13 => r3c1<>6
59. Row 3 / Column 1 → 5 (Naked Single)
60. Row 1 / Column 1 → 6 (Full House)
61. Row 3 / Column 6 → 6 (Full House)
62. Row 1 / Column 6 → 5 (Full House)