# Solution for Evil Sudoku #1247713524895

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

This Sudoku Puzzle has 65 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Naked Triple, Naked Single, Hidden Pair, Full House techniques.

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## Solution Steps:

1. Row 2 / Column 4 → 7 (Hidden Single)
2. Row 5 / Column 1 → 1 (Hidden Single)
3. Row 3 / Column 3 → 4 (Hidden Single)
4. Row 8 / Column 8 → 7 (Hidden Single)
5. Row 5 / Column 9 → 7 (Hidden Single)
6. Row 8 / Column 7 → 8 (Hidden Single)
7. Locked Candidates Type 1 (Pointing): 1 in b2 => r3c9<>1
8. Locked Candidates Type 1 (Pointing): 8 in b6 => r1c8<>8
9. Locked Candidates Type 2 (Claiming): 2 in r8 => r79c1,r9c2<>2
10. Locked Candidates Type 2 (Claiming): 3 in c1 => r8c23,r9c2<>3
11. Naked Triple: 3,6,9 in r4c46,r5c5 => r6c46<>6, r6c46<>9
12. Row 6 / Column 4 → 1 (Naked Single)
13. Row 6 / Column 6 → 1 (Naked Single)
14. Hidden Pair: 1,3 in r4c6,r5c5 => r4c6,r5c5<>6, r4c6,r5c5<>9
15. Row 4 / Column 6 → 3 (Naked Single)
16. Row 5 / Column 5 → 3 (Naked Single)
17. Row 4 / Column 4 → 6 (Hidden Single)
18. Row 8 / Column 1 → 3 (Hidden Single)
19. Row 2 / Column 2 → 3 (Hidden Single)
20. Row 7 / Column 7 → 3 (Hidden Single)
21. Locked Candidates Type 2 (Claiming): 2 in c1 => r1c3,r3c2<>2
22. Naked Triple: 5,6,9 in r12c3,r3c2 => r13c1<>5, r13c1<>6, r13c1<>9
23. Row 1 / Column 1 → 2 (Naked Single)
24. Row 3 / Column 1 → 2 (Naked Single)
25. Locked Candidates Type 2 (Claiming): 5 in c1 => r9c2<>5
26. Locked Candidates Type 2 (Claiming): 6 in c1 => r8c23,r9c2<>6
27. Row 9 / Column 2 → 9 (Naked Single)
28. Row 8 / Column 2 → 2 (Naked Single)
29. Row 8 / Column 3 → 2 (Naked Single)
30. Row 5 / Column 2 → 6 (Naked Single)
31. Row 3 / Column 2 → 5 (Naked Single)
32. Row 4 / Column 2 → 8 (Full House)
33. Row 6 / Column 2 → 8 (Full House)
34. Row 5 / Column 3 → 9 (Naked Single)
35. Row 1 / Column 3 → 6 (Naked Single)
36. Row 2 / Column 3 → 6 (Naked Single)
37. Row 4 / Column 3 → 5 (Naked Single)
38. Row 4 / Column 8 → 9 (Full House)
39. Row 5 / Column 7 → 2 (Naked Single)
40. Row 5 / Column 8 → 2 (Naked Single)
41. Row 1 / Column 8 → 5 (Naked Single)
42. Row 9 / Column 7 → 6 (Naked Single)
43. Row 1 / Column 6 → 9 (Naked Single)
44. Row 1 / Column 5 → 8 (Full House)
45. Row 1 / Column 9 → 8 (Full House)
46. Row 2 / Column 7 → 9 (Naked Single)
47. Row 6 / Column 7 → 5 (Full House)
48. Row 2 / Column 8 → 1 (Naked Single)
49. Row 6 / Column 8 → 6 (Naked Single)
50. Row 7 / Column 8 → 1 (Naked Single)
51. Row 9 / Column 1 → 5 (Naked Single)
52. Row 9 / Column 9 → 2 (Naked Single)
53. Row 3 / Column 4 → 8 (Naked Single)
54. Row 3 / Column 6 → 6 (Naked Single)
55. Row 8 / Column 6 → 6 (Naked Single)
56. Row 3 / Column 5 → 6 (Naked Single)
57. Row 9 / Column 5 → 5 (Naked Single)
58. Row 2 / Column 9 → 1 (Naked Single)
59. Row 3 / Column 9 → 6 (Naked Single)
60. Row 7 / Column 1 → 6 (Naked Single)
61. Row 7 / Column 9 → 9 (Naked Single)
62. Row 9 / Column 4 → 8 (Naked Single)
63. Row 7 / Column 6 → 5 (Naked Single)
64. Row 7 / Column 5 → 9 (Naked Single)
65. Row 7 / Column 4 → 2 (Naked Single)