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

This Sudoku Puzzle has 76 steps and it is solved using Naked Single, Full House, Hidden Single, Locked Candidates Type 1 (Pointing), Empty Rectangle, Discontinuous Nice Loop, Hidden Triple, Locked Candidates Type 2 (Claiming), Hidden Pair, Uniqueness Test 3, undefined, Hidden Rectangle techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Row 8 / Column 1 → 8 (Naked Single)
2. Row 7 / Column 1 → 9 (Naked Single)
3. Row 4 / Column 1 → 5 (Naked Single)
4. Row 2 / Column 1 → 2 (Naked Single)
5. Row 5 / Column 1 → 4 (Full House)
6. Row 5 / Column 2 → 3 (Hidden Single)
7. Row 7 / Column 8 → 3 (Hidden Single)
8. Row 9 / Column 2 → 5 (Hidden Single)
9. Row 1 / Column 2 → 9 (Naked Single)
10. Row 7 / Column 4 → 8 (Hidden Single)
11. Row 6 / Column 2 → 2 (Hidden Single)
12. Row 8 / Column 5 → 3 (Hidden Single)
13. Row 8 / Column 6 → 2 (Hidden Single)
14. Row 7 / Column 2 → 6 (Hidden Single)
15. Locked Candidates Type 1 (Pointing): 8 in b4 => r3c3<>8
16. Locked Candidates Type 1 (Pointing): 7 in b7 => r3c3<>7
17. Empty Rectangle: 7 in b8 (r59c8) => r5c5<>7
18. Discontinuous Nice Loop: 4 r3c5 -4- r7c5 =4= r7c9 =2= r5c9 =5= r2c9 -5- r2c5 =5= r3c5 => r3c5<>4
19. Discontinuous Nice Loop: 4 r3c6 -4- r3c3 -5- r3c5 =5= r2c5 -5- r2c9 =5= r5c9 =2= r7c9 =4= r7c5 -4- r6c5 =4= r6c6 -4- r3c6 => r3c6<>4
20. Hidden Triple: 2,3,4 in r1c46,r3c4 => r1c46<>6, r3c4<>1, r3c4<>7
21. Locked Candidates Type 1 (Pointing): 6 in b2 => r2c89<>6
22. Discontinuous Nice Loop: 2 r5c8 -2- r5c9 =2= r7c9 =4= r9c9 =9= r9c8 =7= r5c8 => r5c8<>2
23. Locked Candidates Type 2 (Claiming): 2 in c8 => r13c7<>2
24. Hidden Pair: 2,5 in r5c79 => r5c79<>1, r5c79<>6, r5c7<>7, r5c79<>9
25. Locked Candidates Type 1 (Pointing): 1 in b6 => r239c8<>1
26. Uniqueness Test 3: 1/7 in r7c37,r8c37 => r3c7<>5, r4c7<>6
27. XY-Chain: 7 7- r4c7 -9- r4c9 -6- r8c9 -1- r8c3 -7 => r8c7<>7
28. Row 8 / Column 3 → 7 (Hidden Single)
29. Row 7 / Column 3 → 1 (Full House)
30. Locked Candidates Type 1 (Pointing): 1 in b8 => r9c9<>1
31. XY-Chain: 9 9- r4c7 -7- r7c7 -2- r5c7 -5- r1c7 -6- r8c7 -1- r8c9 -6- r4c9 -9 => r4c36,r56c8<>9
32. Hidden Rectangle: 6/8 in r4c36,r5c36 => r5c6<>6
33. XY-Chain: 4 4- r7c5 -7- r7c7 -2- r5c7 -5- r1c7 -6- r8c7 -1- r8c9 -6- r4c9 -9- r9c9 -4 => r7c9,r9c46<>4
34. Row 7 / Column 9 → 2 (Naked Single)
35. Row 5 / Column 9 → 5 (Naked Single)
36. Row 7 / Column 7 → 7 (Naked Single)
37. Row 7 / Column 5 → 4 (Full House)
38. Row 5 / Column 7 → 2 (Naked Single)
39. Row 4 / Column 7 → 9 (Naked Single)
40. Row 9 / Column 8 → 9 (Naked Single)
41. Row 3 / Column 7 → 1 (Naked Single)
42. Row 4 / Column 9 → 6 (Naked Single)
43. Row 2 / Column 8 → 8 (Naked Single)
44. Row 9 / Column 9 → 4 (Naked Single)
45. Row 2 / Column 9 → 9 (Naked Single)
46. Row 8 / Column 9 → 1 (Full House)
47. Row 8 / Column 7 → 6 (Full House)
48. Row 1 / Column 7 → 5 (Full House)
49. Row 4 / Column 3 → 8 (Naked Single)
50. Row 6 / Column 8 → 1 (Naked Single)
51. Row 5 / Column 8 → 7 (Full House)
52. Row 2 / Column 2 → 7 (Naked Single)
53. Row 3 / Column 2 → 8 (Full House)
54. Row 3 / Column 8 → 2 (Naked Single)
55. Row 1 / Column 8 → 6 (Full House)
56. Row 1 / Column 3 → 4 (Naked Single)
57. Row 3 / Column 3 → 5 (Full House)
58. Row 6 / Column 5 → 9 (Naked Single)
59. Row 3 / Column 4 → 4 (Naked Single)
60. Row 1 / Column 6 → 3 (Naked Single)
61. Row 1 / Column 4 → 2 (Full House)
62. Row 3 / Column 5 → 7 (Naked Single)
63. Row 3 / Column 6 → 9 (Full House)
64. Row 5 / Column 5 → 1 (Naked Single)
65. Row 2 / Column 5 → 5 (Full House)
66. Row 6 / Column 3 → 6 (Naked Single)
67. Row 5 / Column 3 → 9 (Full House)
68. Row 6 / Column 6 → 4 (Full House)
69. Row 4 / Column 6 → 7 (Naked Single)
70. Row 4 / Column 4 → 3 (Full House)
71. Row 5 / Column 4 → 6 (Naked Single)
72. Row 5 / Column 6 → 8 (Full House)
73. Row 9 / Column 6 → 1 (Naked Single)
74. Row 2 / Column 6 → 6 (Full House)
75. Row 2 / Column 4 → 1 (Full House)
76. Row 9 / Column 4 → 7 (Full House)