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This Sudoku Puzzle has 84 steps and it is solved using Naked Single, Hidden Single, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Naked Triple, Locked Pair, Hidden Pair, Naked Pair, undefined, Turbot Fish, Swordfish, Empty Rectangle, Sue de Coq, Full House techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Row 4 / Column 6 → 9 (Naked Single)
2. Row 4 / Column 8 → 2 (Hidden Single)
3. Row 6 / Column 3 → 2 (Hidden Single)
4. Locked Candidates Type 1 (Pointing): 2 in b3 => r3c56<>2
5. Row 2 / Column 6 → 2 (Hidden Single)
6. Locked Candidates Type 1 (Pointing): 3 in b4 => r5c589<>3
7. Row 6 / Column 8 → 3 (Hidden Single)
8. Locked Candidates Type 2 (Claiming): 3 in r2 => r13c5,r3c4<>3
9. Naked Triple: 1,3,8 in r4c45,r6c4 => r56c5<>1, r56c5<>8
10. Locked Pair: 5,7 in r6c56 => r5c56,r6c7<>7
11. Hidden Pair: 4,6 in r1c35 => r1c3<>3, r1c35<>5, r1c5<>8, r1c5<>9
12. Locked Candidates Type 1 (Pointing): 8 in b2 => r3c79<>8
13. Locked Candidates Type 1 (Pointing): 9 in b2 => r3c79<>9
14. Naked Pair: 4,6 in r15c5 => r2789c5<>6, r378c5<>4
15. Locked Candidates Type 1 (Pointing): 4 in b8 => r8c23<>4
16. Hidden Pair: 8,9 in r3c45 => r3c4<>4, r3c5<>5
17. Row 8 / Column 4 → 4 (Hidden Single)
18. 2-String Kite: 6 in r1c3,r9c4 (connected by r1c5,r2c4) => r9c3<>6
19. Turbot Fish: 6 r2c2 =6= r2c4 -6- r9c4 =6= r8c6 => r8c2<>6
20. Swordfish: 6 r158 c356 => r7c3<>6
21. Empty Rectangle: 1 in b4 (r2c28) => r5c8<>1
22. XY-Wing: 4/6/1 in r17c3,r2c2 => r3c3,r78c2<>1
23. XYZ-Wing: 3/4/5 in r1c1,r3c36 => r3c1<>5
24. Sue de Coq: r23c2 - {1467} (r468c2 - {1789}, r1c13,r3c3 - {3456}) => r3c1<>3, r7c2<>7, r7c2<>9
25. Hidden Pair: 3,5 in r1c1,r3c3 => r3c3<>4
26. Sue de Coq: r78c2 - {46789} (r24c2 - {168}, r7c13,r9c13 - {14579}) => r36c2,r8c3<>1, r8c3<>5, r6c2<>8
27. Row 6 / Column 2 → 9 (Naked Single)
28. Locked Candidates Type 1 (Pointing): 5 in b7 => r9c9<>5
29. Naked Triple: 6,7,8 in r8c236 => r8c58<>7
30. Row 5 / Column 8 → 7 (Hidden Single)
31. Naked Triple: 1,8,9 in r156c7 => r379c7<>1, r79c7<>9
32. Row 3 / Column 7 → 2 (Naked Single)
33. Locked Candidates Type 2 (Claiming): 1 in c7 => r5c9<>1
34. W-Wing: 7/6 in r7c7,r8c6 connected by 6 in r9c47 => r7c5<>7
35. Sue de Coq: r7c12 - {14679} (r7c359 - {1249}, r8c23 - {678}) => r9c1<>7
36. XY-Chain: 5 5- r1c1 -3- r5c1 -1- r3c1 -7- r3c2 -4- r7c2 -6- r2c2 -1- r2c8 -5 => r1c89<>5
37. Row 1 / Column 8 → 9 (Naked Single)
38. Row 1 / Column 7 → 8 (Naked Single)
39. Row 1 / Column 9 → 3 (Naked Single)
40. Row 6 / Column 7 → 1 (Naked Single)
41. Row 1 / Column 1 → 5 (Naked Single)
42. Row 5 / Column 7 → 9 (Naked Single)
43. Row 5 / Column 9 → 8 (Full House)
44. Row 6 / Column 4 → 8 (Naked Single)
45. Row 3 / Column 3 → 3 (Naked Single)
46. Row 3 / Column 4 → 9 (Naked Single)
47. Row 5 / Column 3 → 1 (Naked Single)
48. Row 3 / Column 5 → 8 (Naked Single)
49. Row 4 / Column 2 → 8 (Naked Single)
50. Row 5 / Column 1 → 3 (Full House)
51. Row 7 / Column 3 → 4 (Naked Single)
52. Row 9 / Column 3 → 5 (Naked Single)
53. Row 8 / Column 2 → 7 (Naked Single)
54. Row 1 / Column 3 → 6 (Naked Single)
55. Row 1 / Column 5 → 4 (Full House)
56. Row 8 / Column 3 → 8 (Full House)
57. Row 7 / Column 2 → 6 (Naked Single)
58. Row 3 / Column 2 → 4 (Naked Single)
59. Row 2 / Column 2 → 1 (Full House)
60. Row 3 / Column 1 → 7 (Full House)
61. Row 8 / Column 6 → 6 (Naked Single)
62. Row 3 / Column 6 → 5 (Naked Single)
63. Row 3 / Column 9 → 1 (Full House)
64. Row 2 / Column 8 → 5 (Full House)
65. Row 8 / Column 8 → 1 (Full House)
66. Row 5 / Column 5 → 6 (Naked Single)
67. Row 5 / Column 6 → 4 (Full House)
68. Row 6 / Column 6 → 7 (Full House)
69. Row 6 / Column 5 → 5 (Full House)
70. Row 7 / Column 7 → 7 (Naked Single)
71. Row 9 / Column 7 → 6 (Full House)
72. Row 9 / Column 4 → 1 (Naked Single)
73. Row 2 / Column 5 → 3 (Naked Single)
74. Row 2 / Column 4 → 6 (Full House)
75. Row 4 / Column 4 → 3 (Full House)
76. Row 4 / Column 5 → 1 (Full House)
77. Row 8 / Column 5 → 9 (Naked Single)
78. Row 8 / Column 9 → 5 (Full House)
79. Row 9 / Column 1 → 9 (Naked Single)
80. Row 7 / Column 1 → 1 (Full House)
81. Row 7 / Column 5 → 2 (Naked Single)
82. Row 7 / Column 9 → 9 (Full House)
83. Row 9 / Column 9 → 2 (Full House)
84. Row 9 / Column 5 → 7 (Full House)