# Solution for Evil Sudoku #1285713524895

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

This Sudoku Puzzle has 63 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 4 / Column 8 → 5 (Hidden Single)
2. Row 8 / Column 8 → 8 (Hidden Single)
3. Row 2 / Column 7 → 5 (Hidden Single)
4. Row 5 / Column 1 → 1 (Hidden Single)
5. Row 7 / Column 1 → 5 (Hidden Single)
6. Row 8 / Column 6 → 7 (Hidden Single)
7. Row 5 / Column 8 → 7 (Hidden Single)
8. Row 9 / Column 9 → 7 (Hidden Single)
9. Row 3 / Column 2 → 5 (Hidden Single)
10. Row 1 / Column 5 → 5 (Hidden Single)
11. Row 1 / Column 3 → 7 (Hidden Single)
12. Row 2 / Column 4 → 7 (Hidden Single)
13. Locked Candidates Type 1 (Pointing): 1 in b2 => r3c9<>1
14. Locked Candidates Type 1 (Pointing): 4 in b3 => r5c9<>4
15. Locked Candidates Type 2 (Claiming): 3 in c1 => r8c23,r9c2<>3
16. Locked Candidates Type 2 (Claiming): 4 in c1 => r3c3<>4
17. Locked Candidates Type 2 (Claiming): 4 in c2 => r45c3<>4
18. Naked Triple: 2,6,9 in r8c23,r9c2 => r89c1<>2, r89c1<>6, r89c1<>9
19. Row 8 / Column 1 → 3 (Naked Single)
20. Row 9 / Column 1 → 3 (Naked Single)
21. Row 7 / Column 7 → 3 (Hidden Single)
22. Row 5 / Column 5 → 3 (Hidden Single)
23. Locked Pair: 6,9 in r7c56 => r7c489,r9c45<>6, r7c489,r9c45<>9
24. Row 7 / Column 4 → 2 (Naked Single)
25. Row 9 / Column 5 → 8 (Naked Single)
26. Row 7 / Column 8 → 1 (Naked Single)
27. Row 7 / Column 9 → 1 (Naked Single)
28. Row 9 / Column 4 → 8 (Naked Single)
29. Locked Pair: 6,9 in r2c89 => r1c89,r2c23,r3c9<>6, r1c89,r2c23,r3c9<>9
30. Row 2 / Column 2 → 3 (Naked Single)
31. Row 2 / Column 3 → 3 (Naked Single)
32. Row 1 / Column 8 → 2 (Naked Single)
33. Row 1 / Column 9 → 4 (Naked Single)
34. Row 3 / Column 9 → 4 (Naked Single)
35. Row 3 / Column 1 → 2 (Hidden Single)
36. Row 5 / Column 9 → 2 (Hidden Single)
37. Row 1 / Column 1 → 6 (Hidden Single)
38. Row 1 / Column 6 → 9 (Full House)
39. Row 3 / Column 3 → 9 (Naked Single)
40. Row 3 / Column 5 → 6 (Naked Single)
41. Row 3 / Column 4 → 1 (Full House)
42. Row 3 / Column 6 → 1 (Full House)
43. Row 7 / Column 5 → 9 (Full House)
44. Row 7 / Column 6 → 6 (Naked Single)
45. Row 4 / Column 3 → 6 (Naked Single)
46. Row 5 / Column 3 → 6 (Naked Single)
47. Row 4 / Column 6 → 4 (Naked Single)
48. Row 4 / Column 4 → 9 (Full House)
49. Row 4 / Column 2 → 9 (Full House)
50. Row 6 / Column 6 → 4 (Naked Single)
51. Row 8 / Column 3 → 2 (Naked Single)
52. Row 6 / Column 4 → 6 (Naked Single)
53. Row 5 / Column 2 → 4 (Naked Single)
54. Row 6 / Column 7 → 9 (Full House)
55. Row 8 / Column 2 → 6 (Full House)
56. Row 6 / Column 8 → 9 (Full House)
57. Row 5 / Column 7 → 9 (Full House)
58. Row 8 / Column 7 → 6 (Full House)
59. Row 6 / Column 2 → 2 (Naked Single)
60. Row 9 / Column 2 → 6 (Naked Single)
61. Row 2 / Column 8 → 6 (Naked Single)
62. Row 9 / Column 7 → 2 (Naked Single)
63. Row 2 / Column 9 → 9 (Naked Single)