# Solution for Evil Sudoku #1257713524895

1
8
3
4
2
5
7
3
7
5
7
2
5
8
7
1
5
3
7
8
1
4
1
7
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, Locked Triple, Naked Pair, Full House, Give Up techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Row 2 / Column 4 → 7 (Hidden Single)
2. Row 5 / Column 1 → 1 (Hidden Single)
3. Row 9 / Column 2 → 5 (Hidden Single)
4. Row 8 / Column 8 → 7 (Hidden Single)
5. Row 5 / Column 9 → 7 (Hidden Single)
6. Row 7 / Column 1 → 4 (Hidden Single)
7. Row 2 / Column 3 → 5 (Hidden Single)
8. Row 8 / Column 7 → 8 (Hidden Single)
9. Row 2 / Column 2 → 3 (Hidden Single)
10. Locked Candidates Type 1 (Pointing): 1 in b2 => r3c9<>1
11. Locked Candidates Type 1 (Pointing): 3 in b4 => r8c3<>3
12. Locked Candidates Type 1 (Pointing): 8 in b6 => r1c8<>8
13. Locked Candidates Type 2 (Claiming): 6 in r2 => r1c89,r3c9<>6
14. Locked Candidates Type 2 (Claiming): 9 in r2 => r1c89,r3c9<>9
15. Row 1 / Column 8 → 2 (Naked Single)
16. Locked Triple: 6,8,9 in r456c8 => r27c8,r56c7<>6, r27c8,r56c7<>9
17. Row 2 / Column 8 → 1 (Naked Single)
18. Row 7 / Column 8 → 1 (Naked Single)
19. Locked Candidates Type 1 (Pointing): 2 in b6 => r79c7<>2
20. Locked Candidates Type 2 (Claiming): 2 in r8 => r9c1<>2
21. Naked Pair: 6,9 in r1c16 => r1c35<>6, r1c35<>9
22. Row 1 / Column 3 → 4 (Naked Single)
23. Row 1 / Column 5 → 8 (Naked Single)
24. Row 1 / Column 9 → 8 (Naked Single)
25. Row 3 / Column 9 → 4 (Naked Single)
26. Row 9 / Column 4 → 8 (Hidden Single)
27. Row 9 / Column 9 → 2 (Hidden Single)
28. Row 7 / Column 4 → 2 (Hidden Single)
29. Locked Triple: 2,6,9 in r3c123 => r1c1,r3c456<>6, r1c1,r3c456<>9
30. Row 3 / Column 4 → 1 (Naked Single)
31. Row 3 / Column 5 → 5 (Naked Single)
32. Row 1 / Column 1 → 9 (Naked Single)
33. Row 3 / Column 6 → 5 (Naked Single)
34. Row 1 / Column 6 → 6 (Naked Single)
35. Row 6 / Column 6 → 1 (Hidden Single)
36. Row 4 / Column 6 → 4 (Hidden Single)
37. Row 4 / Column 3 → 3 (Hidden Single)
38. Row 5 / Column 5 → 3 (Hidden Single)
39. Locked Candidates Type 1 (Pointing): 9 in b7 => r8c6<>9
40. Row 8 / Column 6 → 3 (Naked Single)
41. Row 7 / Column 6 → 9 (Naked Single)
42. Row 7 / Column 5 → 6 (Full House)
43. Row 9 / Column 5 → 6 (Full House)
44. Row 7 / Column 9 → 6 (Naked Single)
45. Row 7 / Column 7 → 3 (Naked Single)
46. Row 9 / Column 1 → 3 (Naked Single)
47. Row 2 / Column 9 → 9 (Naked Single)
48. Row 2 / Column 7 → 6 (Full House)
49. Row 9 / Column 7 → 9 (Naked Single)
50. Naked Pair: 2,6 in r3c12 => r3c3<>2, r3c3<>6
51. Row 3 / Column 3 → 6 (Naked Single)
52. Row 3 / Column 1 → 2 (Naked Single)
53. Row 3 / Column 2 → 2 (Naked Single)
54. Row 8 / Column 1 → 6 (Naked Single)
55. Row 8 / Column 2 → 9 (Naked Single)
56. Row 8 / Column 3 → 2 (Full House)
57. Row 5 / Column 3 → 9 (Naked Single)
58. Row 5 / Column 8 → 6 (Naked Single)
59. Row 5 / Column 2 → 4 (Naked Single)
60. Row 5 / Column 7 → 2 (Full House)
61. Row 6 / Column 7 → 4 (Full House)
62. Give Up: Don't know how to proceed!