# Solution for Evil Sudoku #1386713524895

7
1
8
8
7
6
8
1
4
1
6
5
7
2
8
3
4
2
4
5
1
3
8
7
8
3

This Sudoku Puzzle has 66 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Hidden Rectangle, undefined, Naked Single, Naked Pair, Discontinuous Nice Loop, Full House techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Row 1 / Column 5 → 1 (Hidden Single)
2. Row 1 / Column 3 → 4 (Hidden Single)
3. Row 8 / Column 2 → 8 (Hidden Single)
4. Row 8 / Column 5 → 7 (Hidden Single)
5. Row 6 / Column 2 → 7 (Hidden Single)
6. Row 9 / Column 1 → 7 (Hidden Single)
7. Row 4 / Column 8 → 7 (Hidden Single)
8. Row 3 / Column 9 → 7 (Hidden Single)
9. Row 9 / Column 9 → 4 (Hidden Single)
10. Locked Candidates Type 1 (Pointing): 5 in b1 => r5c1<>5
11. Locked Candidates Type 1 (Pointing): 6 in b1 => r7c2<>6
12. Locked Candidates Type 1 (Pointing): 1 in b6 => r9c7<>1
13. Locked Candidates Type 2 (Claiming): 3 in r1 => r2c12,r3c2<>3
14. Hidden Rectangle: 1/9 in r4c47,r6c47 => r6c7<>9
15. Almost Locked Set XZ-Rule: A=r2c45678 {234569}, B=r23c2 {269}, X=6, Z=2,9 => r2c1<>2, r2c1<>9
16. Row 2 / Column 1 → 5 (Naked Single)
17. Row 3 / Column 6 → 5 (Hidden Single)
18. Locked Candidates Type 2 (Claiming): 5 in c8 => r8c9<>5
19. Naked Pair: 6,9 in r48c6 => r26c6<>9
20. Discontinuous Nice Loop: 9 r7c5 -9- r8c6 -6- r4c6 =6= r5c5 =3= r6c6 =4= r6c4 -4- r7c4 =4= r7c5 => r7c5<>9
21. Almost Locked Set XZ-Rule: A=r2c2456 {23469}, B=r23c8 {369}, X=6, Z=9 => r2c7<>9
22. Almost Locked Set XZ-Rule: A=r2c2457 {23469}, B=r2c6 {34}, X=3,4 => r2c8,r3c5<>3, r2c8<>6, r2c8<>9
23. Row 2 / Column 8 → 9 (Naked Single)
24. Row 3 / Column 8 → 3 (Naked Single)
25. Row 3 / Column 5 → 9 (Hidden Single)
26. Row 3 / Column 2 → 2 (Naked Single)
27. Row 3 / Column 7 → 4 (Full House)
28. Row 2 / Column 2 → 6 (Naked Single)
29. Row 2 / Column 7 → 2 (Naked Single)
30. Row 2 / Column 4 → 4 (Naked Single)
31. Row 2 / Column 5 → 3 (Full House)
32. Row 2 / Column 6 → 3 (Full House)
33. Row 5 / Column 5 → 6 (Naked Single)
34. Row 6 / Column 6 → 4 (Naked Single)
35. Row 4 / Column 6 → 9 (Naked Single)
36. Row 4 / Column 4 → 1 (Full House)
37. Row 6 / Column 4 → 1 (Full House)
38. Row 9 / Column 5 → 2 (Naked Single)
39. Row 7 / Column 5 → 4 (Full House)
40. Row 4 / Column 3 → 2 (Naked Single)
41. Row 8 / Column 6 → 6 (Naked Single)
42. Row 6 / Column 7 → 5 (Naked Single)
43. Row 4 / Column 1 → 8 (Naked Single)
44. Row 4 / Column 7 → 6 (Full House)
45. Row 1 / Column 7 → 6 (Naked Single)
46. Row 5 / Column 9 → 9 (Naked Single)
47. Row 6 / Column 9 → 9 (Naked Single)
48. Row 9 / Column 7 → 9 (Naked Single)
49. Row 1 / Column 9 → 5 (Naked Single)
50. Row 5 / Column 1 → 3 (Naked Single)
51. Row 5 / Column 7 → 8 (Naked Single)
52. Row 5 / Column 3 → 5 (Full House)
53. Row 6 / Column 3 → 3 (Full House)
54. Row 8 / Column 9 → 2 (Naked Single)
55. Row 1 / Column 1 → 9 (Naked Single)
56. Row 1 / Column 2 → 3 (Full House)
57. Row 7 / Column 1 → 2 (Full House)
58. Row 7 / Column 2 → 9 (Full House)
59. Row 7 / Column 3 → 6 (Naked Single)
60. Row 7 / Column 4 → 5 (Full House)
61. Row 8 / Column 3 → 1 (Full House)
62. Row 7 / Column 8 → 5 (Full House)
63. Row 9 / Column 3 → 1 (Full House)
64. Row 8 / Column 4 → 9 (Full House)
65. Row 8 / Column 8 → 5 (Full House)
66. Row 9 / Column 8 → 6 (Naked Single)