# Solution for Evil Sudoku #3467243159841

9
4
7
3
8
9
5
3
1
9
6
2
1
8
7
2
9
4
5
6
7
7
3
6
4
9
6

This Sudoku Puzzle has 73 steps and it is solved using Naked Single, Full House, Hidden Single, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Naked Triple, Hidden Pair, undefined, AIC, Locked Pair, Continuous Nice Loop, Skyscraper, Sue de Coq techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Row 7 / Column 5 → 2 (Naked Single)
2. Row 2 / Column 5 → 4 (Naked Single)
3. Row 3 / Column 5 → 5 (Naked Single)
4. Row 8 / Column 5 → 9 (Full House)
5. Row 6 / Column 6 → 9 (Hidden Single)
6. Row 1 / Column 9 → 9 (Hidden Single)
7. Row 9 / Column 3 → 9 (Hidden Single)
8. Row 2 / Column 9 → 6 (Hidden Single)
9. Locked Candidates Type 1 (Pointing): 6 in b2 => r4c6<>6
10. Locked Candidates Type 1 (Pointing): 7 in b3 => r49c8<>7
11. Locked Candidates Type 1 (Pointing): 2 in b7 => r13c2<>2
12. Locked Candidates Type 2 (Claiming): 8 in c9 => r79c8,r89c7<>8
13. Naked Triple: 3,5,8 in r4c368 => r4c2<>3, r4c24<>5, r4c27<>8
14. Hidden Pair: 4,7 in r4c2,r5c1 => r5c1<>1, r5c1<>3
15. 2-String Kite: 8 in r1c7,r4c3 (connected by r4c8,r6c7) => r1c3<>8
16. Locked Candidates Type 2 (Claiming): 8 in c3 => r6c2<>8
17. XY-Wing: 1/5/8 in r7c4,r8c69 => r7c9<>8
18. Row 7 / Column 9 → 3 (Naked Single)
19. XY-Chain: 8 8- r3c2 -7- r4c2 -4- r5c1 -7- r5c9 -5- r8c9 -8 => r8c2<>8
20. AIC: 8 8- r1c7 =8= r6c7 =6= r4c7 =7= r4c2 -7- r3c2 -8 => r1c12,r3c8<>8
21. Locked Pair: 2,7 in r23c8 => r1c78,r9c8<>2
22. Continuous Nice Loop: 1/3/5/8 3= r9c2 =2= r9c7 =7= r9c9 =8= r8c9 =5= r8c6 -5- r4c6 -3- r4c8 =3= r6c8 -3- r6c2 =3= r9c2 =2 => r9c27<>1, r46c3<>3, r5c6,r9c9<>5, r9c2<>8
23. Skyscraper: 5 in r4c6,r5c9 (connected by r8c69) => r4c8,r5c4<>5
24. X-Wing: 5 c48 r69 => r6c23<>5
25. Row 1 / Column 2 → 5 (Hidden Single)
26. Sue de Coq: r6c78 - {13568} (r6c23 - {138}, r4c7,r5c9 - {567}) => r5c7<>7
27. Row 5 / Column 7 → 1 (Naked Single)
28. XY-Chain: 2 2- r1c3 -1- r6c3 -8- r4c3 -5- r4c6 -3- r5c6 -2 => r1c6<>2
29. Row 1 / Column 3 → 2 (Hidden Single)
30. Finned X-Wing: 1 r18 c16 fr8c2 => r9c1<>1
31. Hidden Pair: 1,5 in r9c48 => r9c4<>8
32. Row 7 / Column 4 → 8 (Hidden Single)
33. Row 3 / Column 2 → 8 (Hidden Single)
34. Row 4 / Column 2 → 7 (Hidden Single)
35. Row 4 / Column 7 → 6 (Naked Single)
36. Row 5 / Column 1 → 4 (Naked Single)
37. Row 4 / Column 4 → 4 (Naked Single)
38. Row 6 / Column 7 → 8 (Naked Single)
39. Row 5 / Column 4 → 2 (Naked Single)
40. Row 1 / Column 7 → 4 (Naked Single)
41. Row 4 / Column 8 → 3 (Naked Single)
42. Row 6 / Column 3 → 1 (Naked Single)
43. Row 2 / Column 4 → 1 (Naked Single)
44. Row 5 / Column 6 → 3 (Naked Single)
45. Row 1 / Column 8 → 8 (Naked Single)
46. Row 8 / Column 7 → 2 (Naked Single)
47. Row 9 / Column 7 → 7 (Full House)
48. Row 4 / Column 6 → 5 (Naked Single)
49. Row 4 / Column 3 → 8 (Full House)
50. Row 6 / Column 4 → 6 (Full House)
51. Row 9 / Column 4 → 5 (Full House)
52. Row 8 / Column 6 → 1 (Full House)
53. Row 6 / Column 8 → 5 (Naked Single)
54. Row 6 / Column 2 → 3 (Full House)
55. Row 5 / Column 3 → 5 (Full House)
56. Row 2 / Column 3 → 3 (Full House)
57. Row 5 / Column 9 → 7 (Full House)
58. Row 1 / Column 6 → 6 (Naked Single)
59. Row 1 / Column 1 → 1 (Full House)
60. Row 3 / Column 6 → 2 (Full House)
61. Row 9 / Column 9 → 8 (Naked Single)
62. Row 8 / Column 9 → 5 (Full House)
63. Row 9 / Column 8 → 1 (Naked Single)
64. Row 7 / Column 8 → 4 (Full House)
65. Row 7 / Column 2 → 1 (Full House)
66. Row 8 / Column 1 → 8 (Naked Single)
67. Row 8 / Column 2 → 4 (Full House)
68. Row 9 / Column 2 → 2 (Full House)
69. Row 9 / Column 1 → 3 (Full House)
70. Row 2 / Column 1 → 7 (Naked Single)
71. Row 2 / Column 8 → 2 (Full House)
72. Row 3 / Column 8 → 7 (Full House)
73. Row 3 / Column 1 → 6 (Full House)