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This Sudoku Puzzle has 83 steps and it is solved using Locked Candidates Type 1 (Pointing), Naked Pair, Locked Candidates Type 2 (Claiming), Hidden Pair, Hidden Triple, undefined, Finned Swordfish, AIC, Locked Triple, Hidden Single, Naked Single, Skyscraper, Full House, Bivalue Universal Grave + 1 techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Locked Candidates Type 1 (Pointing): 5 in b3 => r3c4<>5
2. Locked Candidates Type 1 (Pointing): 4 in b5 => r4c8<>4
3. Locked Candidates Type 1 (Pointing): 7 in b6 => r5c4<>7
4. Locked Candidates Type 1 (Pointing): 7 in b7 => r23c2<>7
5. Naked Pair: 1,4 in r47c6 => r258c6<>1, r8c6<>4
6. Locked Candidates Type 2 (Claiming): 4 in r8 => r7c89,r9c789<>4
7. Hidden Pair: 6,7 in r2c14 => r2c1<>2, r2c1<>9, r2c4<>1, r2c4<>8
8. Locked Candidates Type 1 (Pointing): 9 in b1 => r46c2<>9
9. Locked Candidates Type 1 (Pointing): 1 in b2 => r3c79<>1
10. Hidden Pair: 6,7 in r58c7 => r5c7<>3, r5c7<>9, r8c7<>1, r8c7<>4
11. Hidden Triple: 1,6,7 in r23c4,r3c5 => r3c45<>8, r3c5<>2
12. 2-String Kite: 1 in r5c3,r7c6 (connected by r4c6,r5c4) => r7c3<>1
13. Finned Swordfish: 6 r247 c148 fr4c3 => r5c1<>6
14. AIC: 9 9- r5c1 -2- r5c6 -8- r8c6 -5- r8c2 =5= r9c1 =4= r3c1 -4- r1c3 =4= r1c7 -4- r6c7 -9 => r5c89,r6c1<>9
15. Locked Triple: 3,6,7 in r5c789 => r4c8,r5c3<>3, r4c8,r5c3<>6
16. AIC: 2 2- r1c5 -8- r1c4 -5- r9c4 =5= r9c1 -5- r6c1 -2- r6c5 =2= r5c6 -2 => r12c6,r6c5<>2
17. Row 5 / Column 6 → 2 (Hidden Single)
18. Row 5 / Column 1 → 9 (Naked Single)
19. Row 1 / Column 5 → 2 (Hidden Single)
20. AIC: 7 7- r5c9 -3- r5c8 -6- r7c8 =6= r7c4 -6- r2c4 =6= r2c1 -6- r4c1 -5- r9c1 =5= r9c4 -5- r1c4 -8- r5c4 -1- r3c4 =1= r3c5 =6= r8c5 -6- r8c7 -7 => r5c7,r78c9<>7
21. Row 5 / Column 7 → 6 (Naked Single)
22. Row 5 / Column 8 → 3 (Naked Single)
23. Row 8 / Column 7 → 7 (Naked Single)
24. Row 5 / Column 9 → 7 (Naked Single)
25. Row 7 / Column 2 → 7 (Hidden Single)
26. Skyscraper: 1 in r7c6,r8c2 (connected by r4c26) => r8c5<>1
27. XY-Chain: 9 9- r6c5 -8- r5c4 -1- r4c6 -4- r7c6 -1- r7c9 -9 => r6c9<>9
28. XY-Chain: 9 9- r4c8 -5- r6c9 -4- r6c7 -9- r6c5 -8- r5c4 -1- r4c6 -4- r7c6 -1- r7c9 -9 => r79c8<>9
29. AIC: 1 1- r4c2 =1= r8c2 =5= r9c1 =4= r3c1 -4- r1c3 =4= r1c7 -4- r6c7 -9- r6c5 -8- r5c4 -1 => r4c456,r5c3<>1
30. Row 4 / Column 6 → 4 (Naked Single)
31. Row 5 / Column 3 → 8 (Naked Single)
32. Row 5 / Column 4 → 1 (Full House)
33. Row 7 / Column 6 → 1 (Naked Single)
34. Row 7 / Column 9 → 9 (Naked Single)
35. Row 6 / Column 5 → 8 (Hidden Single)
36. Row 8 / Column 5 → 6 (Naked Single)
37. Row 9 / Column 5 → 9 (Naked Single)
38. Row 7 / Column 4 → 4 (Naked Single)
39. Row 4 / Column 5 → 7 (Naked Single)
40. Row 3 / Column 5 → 1 (Full House)
41. Row 4 / Column 4 → 9 (Full House)
42. Row 7 / Column 3 → 2 (Naked Single)
43. Row 7 / Column 8 → 6 (Full House)
44. Row 4 / Column 8 → 5 (Naked Single)
45. Row 4 / Column 1 → 6 (Naked Single)
46. Row 6 / Column 9 → 4 (Naked Single)
47. Row 6 / Column 7 → 9 (Full House)
48. Row 2 / Column 1 → 7 (Naked Single)
49. Row 2 / Column 4 → 6 (Naked Single)
50. Row 3 / Column 4 → 7 (Naked Single)
51. Row 2 / Column 8 → 9 (Hidden Single)
52. Row 3 / Column 9 → 5 (Hidden Single)
53. Row 3 / Column 3 → 6 (Hidden Single)
54. Row 8 / Column 8 → 4 (Hidden Single)
55. Row 1 / Column 2 → 9 (Hidden Single)
56. Locked Candidates Type 2 (Claiming): 8 in r1 => r2c6<>8
57. Row 2 / Column 6 → 3 (Naked Single)
58. Row 9 / Column 9 → 3 (Hidden Single)
59. Naked Pair: 1,2 in r29c7 => r3c7<>2
60. Bivalue Universal Grave + 1 => r3c2<>3, r3c2<>8
61. Row 3 / Column 2 → 2 (Naked Single)
62. Row 2 / Column 2 → 8 (Naked Single)
63. Row 3 / Column 1 → 4 (Naked Single)
64. Row 1 / Column 3 → 3 (Full House)
65. Row 3 / Column 8 → 8 (Naked Single)
66. Row 3 / Column 7 → 3 (Full House)
67. Row 9 / Column 8 → 2 (Full House)
68. Row 6 / Column 2 → 5 (Naked Single)
69. Row 6 / Column 1 → 2 (Full House)
70. Row 9 / Column 1 → 5 (Full House)
71. Row 2 / Column 9 → 1 (Naked Single)
72. Row 2 / Column 7 → 2 (Full House)
73. Row 1 / Column 7 → 4 (Full House)
74. Row 9 / Column 7 → 1 (Full House)
75. Row 8 / Column 9 → 8 (Full House)
76. Row 4 / Column 3 → 1 (Naked Single)
77. Row 9 / Column 3 → 4 (Full House)
78. Row 8 / Column 2 → 1 (Full House)
79. Row 9 / Column 4 → 8 (Full House)
80. Row 8 / Column 6 → 5 (Full House)
81. Row 4 / Column 2 → 3 (Full House)
82. Row 1 / Column 4 → 5 (Full House)
83. Row 1 / Column 6 → 8 (Full House)