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9
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This Sudoku Puzzle has 92 steps and it is solved using Finned Swordfish, AIC, Discontinuous Nice Loop, Locked Candidates Type 2 (Claiming), Hidden Single, Hidden Pair, Continuous Nice Loop, Naked Pair, undefined, Locked Pair, Naked Single, Full House, Skyscraper, Naked Triple, Turbot Fish, Sue de Coq, Locked Candidates Type 1 (Pointing) techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Finned Swordfish: 4 r247 c689 fr4c5 => r56c6<>4
2. AIC: 2/3 2- r3c7 =2= r3c9 =5= r7c9 =4= r7c8 =3= r9c7 -3 => r9c7<>2, r3c7<>3
3. Discontinuous Nice Loop: 3 r1c3 -3- r1c8 -4- r7c8 =4= r7c9 =5= r3c9 -5- r1c7 =5= r1c3 => r1c3<>3
4. Locked Candidates Type 2 (Claiming): 3 in r1 => r2c8<>3
5. AIC: 5 5- r1c3 -7- r8c3 -9- r8c8 =9= r7c8 =4= r7c9 =5= r3c9 -5 => r1c7,r3c13<>5
6. Row 1 / Column 3 → 5 (Hidden Single)
7. Row 4 / Column 1 → 5 (Hidden Single)
8. Hidden Pair: 2,5 in r3c79 => r3c79<>6, r3c79<>8
9. Row 3 / Column 1 → 6 (Hidden Single)
10. Locked Candidates Type 2 (Claiming): 8 in r3 => r1c5,r2c46<>8
11. Continuous Nice Loop: 2/4/8 8= r1c7 =3= r1c8 -3- r7c8 =3= r7c1 =8= r2c1 -8- r2c9 =8= r1c7 =3 => r7c1<>2, r1c7<>4, r2c2<>8
12. Locked Candidates Type 2 (Claiming): 4 in c7 => r4c89,r5c9,r6c8<>4
13. Locked Candidates Type 2 (Claiming): 4 in r4 => r6c5<>4
14. AIC: 5/6 6- r8c4 =6= r9c5 -6- r9c9 -2- r3c9 -5- r3c7 =5= r8c7 -5 => r8c4<>5, r8c7<>6
15. Naked Pair: 2,5 in r38c7 => r56c7<>2
16. Sashimi X-Wing: 6 r58 c48 fr5c7 fr5c9 => r46c8<>6
17. Locked Pair: 1,2 in r46c8 => r45c9,r78c8<>2
18. Finned Swordfish: 6 r258 c489 fr5c7 => r4c9<>6
19. Row 4 / Column 9 → 7 (Naked Single)
20. XY-Chain: 7 7- r1c2 -8- r1c7 -3- r9c7 -6- r8c8 -9- r8c3 -7 => r8c2<>7
21. XY-Chain: 9 9- r2c2 -7- r1c2 -8- r1c7 -3- r9c7 -6- r8c8 -9 => r8c2<>9
22. Discontinuous Nice Loop: 7 r2c2 =9= r7c2 =1= r9c3 =3= r3c3 =9= r2c2 => r2c2<>7
23. Row 2 / Column 2 → 9 (Naked Single)
24. Row 3 / Column 3 → 3 (Naked Single)
25. Hidden Pair: 3,4 in r24c6 => r2c6<>7, r4c6<>2
26. 2-String Kite: 7 in r2c4,r6c2 (connected by r1c2,r2c1) => r6c4<>7
27. XY-Chain: 7 7- r2c4 -3- r2c6 -4- r2c8 -6- r8c8 -9- r8c3 -7 => r8c4<>7
28. AIC: 8 8- r1c7 -3- r9c7 -6- r9c5 =6= r8c4 -6- r4c4 -3- r2c4 -7- r2c1 -8- r2c9 =8= r5c9 -8 => r2c9,r56c7<>8
29. Row 2 / Column 1 → 8 (Hidden Single)
30. Row 1 / Column 2 → 7 (Full House)
31. Row 7 / Column 1 → 3 (Naked Single)
32. Row 1 / Column 5 → 4 (Naked Single)
33. Row 1 / Column 8 → 3 (Naked Single)
34. Row 1 / Column 7 → 8 (Full House)
35. Row 2 / Column 6 → 3 (Naked Single)
36. Row 2 / Column 4 → 7 (Naked Single)
37. Row 4 / Column 6 → 4 (Naked Single)
38. Row 5 / Column 9 → 8 (Hidden Single)
39. Row 9 / Column 7 → 3 (Hidden Single)
40. Row 4 / Column 4 → 3 (Hidden Single)
41. Skyscraper: 7 in r5c1,r6c5 (connected by r9c15) => r5c6,r6c3<>7
42. Naked Triple: 2,6,9 in r4c5,r5c46 => r6c45<>6, r6c56<>2
43. Turbot Fish: 2 r4c5 =2= r5c6 -2- r5c1 =2= r9c1 => r9c5<>2
44. Sue de Coq: r8c23 - {2789} (r8c48 - {689}, r9c1 - {27}) => r7c2<>2, r9c3<>7, r8c6<>8, r8c6<>9
45. Turbot Fish: 2 r5c6 =2= r5c1 -2- r9c1 =2= r8c2 => r8c6<>2
46. Sue de Coq: r8c78 - {2569} (r8c36 - {579}, r9c9 - {26}) => r7c9<>2, r8c4<>9
47. Locked Candidates Type 2 (Claiming): 2 in r7 => r9c6<>2
48. XY-Chain: 1 1- r4c8 -2- r4c5 -6- r5c4 -9- r5c6 -2- r5c1 -7- r5c3 -4- r6c3 -1 => r4c2,r6c8<>1
49. Row 6 / Column 8 → 2 (Naked Single)
50. Row 4 / Column 8 → 1 (Naked Single)
51. XY-Chain: 5 5- r6c4 -8- r8c4 -6- r8c8 -9- r8c3 -7- r8c6 -5 => r6c6,r7c4<>5
52. Row 6 / Column 4 → 5 (Hidden Single)
53. XY-Chain: 9 9- r5c4 -6- r8c4 -8- r8c2 -2- r8c7 -5- r7c9 -4- r7c8 -9 => r7c4<>9
54. Naked Pair: 1,8 in r7c24 => r7c56<>8, r7c6<>1
55. Locked Candidates Type 1 (Pointing): 8 in b8 => r3c4<>8
56. XY-Chain: 2 2- r4c2 -6- r4c5 -2- r7c5 -9- r7c8 -4- r7c9 -5- r8c7 -2- r8c2 -8- r8c4 -6- r5c4 -9- r5c6 -2 => r4c5,r5c1<>2
57. Row 4 / Column 5 → 6 (Naked Single)
58. Row 4 / Column 2 → 2 (Full House)
59. Row 5 / Column 1 → 7 (Naked Single)
60. Row 9 / Column 1 → 2 (Full House)
61. Row 5 / Column 4 → 9 (Naked Single)
62. Row 8 / Column 2 → 8 (Naked Single)
63. Row 5 / Column 3 → 4 (Naked Single)
64. Row 9 / Column 9 → 6 (Naked Single)
65. Row 3 / Column 4 → 1 (Naked Single)
66. Row 5 / Column 6 → 2 (Naked Single)
67. Row 5 / Column 7 → 6 (Full House)
68. Row 6 / Column 7 → 4 (Full House)
69. Row 7 / Column 2 → 1 (Naked Single)
70. Row 6 / Column 2 → 6 (Full House)
71. Row 6 / Column 3 → 1 (Full House)
72. Row 8 / Column 4 → 6 (Naked Single)
73. Row 7 / Column 4 → 8 (Full House)
74. Row 2 / Column 9 → 4 (Naked Single)
75. Row 2 / Column 8 → 6 (Full House)
76. Row 8 / Column 8 → 9 (Naked Single)
77. Row 7 / Column 8 → 4 (Full House)
78. Row 9 / Column 3 → 9 (Naked Single)
79. Row 8 / Column 3 → 7 (Full House)
80. Row 7 / Column 9 → 5 (Naked Single)
81. Row 3 / Column 9 → 2 (Full House)
82. Row 8 / Column 7 → 2 (Full House)
83. Row 8 / Column 6 → 5 (Full House)
84. Row 3 / Column 7 → 5 (Full House)
85. Row 9 / Column 5 → 7 (Naked Single)
86. Row 9 / Column 6 → 1 (Full House)
87. Row 7 / Column 6 → 9 (Naked Single)
88. Row 7 / Column 5 → 2 (Full House)
89. Row 6 / Column 5 → 8 (Naked Single)
90. Row 3 / Column 5 → 9 (Full House)
91. Row 3 / Column 6 → 8 (Full House)
92. Row 6 / Column 6 → 7 (Full House)