# Solution for Evil Sudoku #1359713524895

7
1
8
5
7
9
8
1
4
1
9
5
7
2
8
3
4
2
4
5
1
3
5
7
5
3

This Sudoku Puzzle has 61 steps and it is solved using Hidden Single, Naked Single, Full House, Locked Candidates Type 1 (Pointing), Naked Pair, Uniqueness Test 1, Bivalue Universal Grave + 1 techniques.

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## Solution Steps:

1. Row 1 / Column 5 → 1 (Hidden Single)
2. Row 1 / Column 3 → 4 (Hidden Single)
3. Row 2 / Column 1 → 5 (Hidden Single)
4. Row 3 / Column 8 → 5 (Hidden Single)
5. Row 2 / Column 8 → 3 (Hidden Single)
6. Row 3 / Column 9 → 7 (Hidden Single)
7. Row 6 / Column 9 → 6 (Naked Single)
8. Row 4 / Column 8 → 7 (Hidden Single)
9. Row 6 / Column 2 → 7 (Hidden Single)
10. Row 9 / Column 9 → 4 (Hidden Single)
11. Row 9 / Column 1 → 7 (Hidden Single)
12. Row 8 / Column 5 → 7 (Hidden Single)
13. Row 9 / Column 7 → 8 (Hidden Single)
14. Row 4 / Column 1 → 8 (Hidden Single)
15. Row 5 / Column 9 → 8 (Hidden Single)
16. Row 8 / Column 9 → 2 (Hidden Single)
17. Row 1 / Column 9 → 9 (Full House)
18. Row 4 / Column 3 → 2 (Hidden Single)
19. Row 2 / Column 2 → 9 (Hidden Single)
20. Row 9 / Column 5 → 2 (Hidden Single)
21. Row 2 / Column 4 → 2 (Hidden Single)
22. Row 2 / Column 6 → 8 (Hidden Single)
23. Locked Candidates Type 1 (Pointing): 3 in b2 => r3c2<>3
24. Locked Candidates Type 1 (Pointing): 6 in b4 => r5c5<>6
25. Naked Pair: 6,8 in r8c24 => r8c368<>6
26. Row 8 / Column 6 → 9 (Naked Single)
27. Row 4 / Column 6 → 6 (Naked Single)
28. Row 8 / Column 3 → 1 (Naked Single)
29. Row 8 / Column 8 → 1 (Naked Single)
30. Row 4 / Column 4 → 1 (Naked Single)
31. Row 4 / Column 7 → 9 (Full House)
32. Row 6 / Column 4 → 4 (Naked Single)
33. Row 5 / Column 7 → 5 (Naked Single)
34. Row 6 / Column 7 → 1 (Full House)
35. Row 6 / Column 6 → 3 (Naked Single)
36. Row 3 / Column 6 → 4 (Full House)
37. Row 5 / Column 5 → 9 (Full House)
38. Row 6 / Column 3 → 5 (Full House)
39. Row 2 / Column 5 → 6 (Naked Single)
40. Row 2 / Column 7 → 4 (Full House)
41. Row 3 / Column 5 → 3 (Full House)
42. Row 7 / Column 5 → 4 (Full House)
43. Uniqueness Test 1: 2/6 in r1c27,r3c27 => r1c2<>2, r1c2<>6
44. Row 1 / Column 2 → 3 (Naked Single)
45. Uniqueness Test 1: 6/8 in r7c24,r8c24 => r7c2<>6, r7c2<>8
46. Row 7 / Column 2 → 2 (Naked Single)
47. Row 3 / Column 2 → 6 (Naked Single)
48. Row 1 / Column 1 → 2 (Full House)
49. Row 3 / Column 7 → 2 (Full House)
50. Row 8 / Column 2 → 8 (Full House)
51. Row 1 / Column 7 → 6 (Full House)
52. Row 8 / Column 4 → 6 (Naked Single)
53. Row 7 / Column 4 → 8 (Full House)
54. Bivalue Universal Grave + 1 => r7c3<>3, r7c3<>9
55. Row 7 / Column 3 → 6 (Naked Single)
56. Row 5 / Column 3 → 3 (Naked Single)
57. Row 9 / Column 3 → 9 (Full House)
58. Row 7 / Column 1 → 3 (Full House)
59. Row 7 / Column 8 → 9 (Full House)
60. Row 5 / Column 1 → 6 (Full House)
61. Row 9 / Column 8 → 6 (Full House)