# Solution for Evil Sudoku #1347713524895

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

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, Locked Pair, Full House techniques.

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## Solution Steps:

1. Row 1 / Column 5 → 1 (Hidden Single)
2. Row 4 / Column 8 → 7 (Hidden Single)
3. Row 3 / Column 7 → 4 (Hidden Single)
4. Row 9 / Column 5 → 7 (Hidden Single)
5. Row 8 / Column 2 → 7 (Hidden Single)
6. Row 7 / Column 2 → 8 (Hidden Single)
7. Locked Candidates Type 1 (Pointing): 1 in b6 => r9c7<>1
8. Locked Candidates Type 1 (Pointing): 8 in b8 => r8c9<>8
9. Locked Candidates Type 2 (Claiming): 3 in r1 => r2c12,r3c2<>3
10. Locked Candidates Type 2 (Claiming): 2 in c2 => r1c13,r2c1<>2
11. Naked Triple: 1,6,9 in r4c46,r6c4 => r5c5,r6c6<>6, r5c5,r6c6<>9
12. Row 5 / Column 5 → 3 (Naked Single)
13. Row 6 / Column 6 → 3 (Naked Single)
14. Row 2 / Column 8 → 3 (Hidden Single)
15. Row 1 / Column 2 → 3 (Hidden Single)
16. Row 7 / Column 1 → 3 (Hidden Single)
17. Locked Candidates Type 2 (Claiming): 2 in r1 => r2c7,r3c9<>2
18. Naked Triple: 5,6,9 in r1c13,r2c1 => r23c2<>6, r23c2<>9
19. Row 2 / Column 2 → 2 (Naked Single)
20. Row 3 / Column 2 → 2 (Naked Single)
21. Row 6 / Column 2 → 6 (Hidden Single)
22. Locked Pair: 6,9 in r23c5 => r2c46,r3c6,r78c5<>6, r2c46,r3c6,r78c5<>9
23. Row 7 / Column 5 → 2 (Naked Single)
24. Row 8 / Column 5 → 2 (Naked Single)
25. Row 3 / Column 6 → 5 (Naked Single)
26. Row 2 / Column 4 → 8 (Naked Single)
27. Row 2 / Column 6 → 8 (Naked Single)
28. Locked Pair: 6,9 in r3c89 => r1c79,r2c7,r3c5<>6, r1c79,r2c7,r3c5<>9
29. Row 3 / Column 5 → 9 (Naked Single)
30. Row 2 / Column 7 → 5 (Naked Single)
31. Row 2 / Column 5 → 6 (Naked Single)
32. Row 3 / Column 8 → 6 (Naked Single)
33. Row 3 / Column 9 → 6 (Naked Single)
34. Row 1 / Column 7 → 2 (Naked Single)
35. Row 1 / Column 9 → 2 (Naked Single)
36. Row 2 / Column 1 → 9 (Naked Single)
37. Row 5 / Column 7 → 6 (Hidden Single)
38. Locked Pair: 5,9 in r56c3 => r1c3,r5c1<>5, r4789c3<>9
39. Row 1 / Column 3 → 6 (Naked Single)
40. Row 4 / Column 3 → 2 (Naked Single)
41. Row 7 / Column 3 → 6 (Naked Single)
42. Row 5 / Column 1 → 8 (Naked Single)
43. Row 1 / Column 1 → 5 (Naked Single)
44. Row 8 / Column 3 → 1 (Naked Single)
45. Row 4 / Column 1 → 8 (Naked Single)
46. Row 9 / Column 3 → 1 (Naked Single)
47. Row 9 / Column 1 → 2 (Naked Single)
48. Row 9 / Column 8 → 9 (Naked Single)
49. Row 7 / Column 8 → 5 (Full House)
50. Row 8 / Column 8 → 5 (Full House)
51. Row 8 / Column 9 → 5 (Naked Single)
52. Row 9 / Column 7 → 8 (Naked Single)
53. Row 9 / Column 9 → 8 (Naked Single)
54. Row 7 / Column 4 → 9 (Naked Single)
55. Row 5 / Column 9 → 9 (Naked Single)
56. Row 4 / Column 7 → 1 (Full House)
57. Row 5 / Column 3 → 5 (Full House)
58. Row 6 / Column 7 → 1 (Full House)
59. Row 6 / Column 9 → 9 (Naked Single)
60. Row 6 / Column 4 → 1 (Naked Single)
61. Row 8 / Column 4 → 6 (Naked Single)
62. Row 8 / Column 6 → 6 (Naked Single)
63. Row 4 / Column 4 → 6 (Naked Single)
64. Row 6 / Column 3 → 9 (Naked Single)
65. Row 4 / Column 6 → 9 (Naked Single)