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

This Sudoku Puzzle has 76 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Hidden Rectangle, Discontinuous Nice Loop, Naked Single, Locked Candidates Type 2 (Claiming), AIC, Grouped Continuous Nice Loop, Naked Triple, Locked Triple, Full House techniques.

Naked Single Explanation
Hidden Single Explanation
Locked Candidates Explanation
Locked Candidates Explanation
Full House Explanation
Try To Solve This Puzzle

Solution Steps:

  1. Row 3 / Column 7 → 8 (Hidden Single)
  2. Row 8 / Column 6 → 3 (Hidden Single)
  3. Row 3 / Column 8 → 4 (Hidden Single)
  4. Row 8 / Column 5 → 6 (Hidden Single)
  5. Locked Candidates Type 1 (Pointing): 5 in b1 => r2c5<>5
  6. Locked Candidates Type 1 (Pointing): 7 in b3 => r1c46<>7
  7. Locked Candidates Type 1 (Pointing): 6 in b6 => r2c9<>6
  8. Row 2 / Column 8 → 6 (Hidden Single)
  9. Locked Candidates Type 1 (Pointing): 2 in b8 => r7c9<>2
  10. Locked Candidates Type 1 (Pointing): 4 in b9 => r46c9<>4
  11. Locked Candidates Type 1 (Pointing): 9 in b9 => r5c8<>9
  12. Hidden Rectangle: 1/2 in r2c79,r8c79 => r8c9<>1
  13. Discontinuous Nice Loop: 1/2/9 r2c3 =5= r2c1 =3= r2c9 =2= r8c9 =8= r8c3 =5= r2c3 => r2c3<>1, r2c3<>2, r2c3<>9
  14. Row 2 / Column 3 → 5 (Naked Single)
  15. Locked Candidates Type 2 (Claiming): 2 in r2 => r1c7<>2
  16. AIC: 4 4- r4c5 =4= r6c5 =8= r6c3 -8- r8c3 =8= r8c9 =2= r8c7 -2- r2c7 -1- r6c7 -4- r5c7 =4= r5c2 -4 => r4c12<>4
  17. Hidden Rectangle: 1/4 in r4c57,r6c57 => r4c5<>1
  18. AIC: 4 4- r4c5 =4= r6c5 =8= r6c3 -8- r8c3 =8= r8c9 =2= r8c7 -2- r2c7 -1- r6c7 -4 => r4c7,r6c5<>4
  19. Row 4 / Column 5 → 4 (Hidden Single)
  20. AIC: 7 7- r1c7 -1- r6c7 -4- r6c1 =4= r7c1 =7= r7c8 -7 => r1c8,r8c7<>7
  21. Row 1 / Column 7 → 7 (Hidden Single)
  22. Grouped Continuous Nice Loop: 1/3 4= r5c2 =8= r79c2 -8- r8c3 =8= r8c9 =2= r8c7 -2- r2c7 -1- r6c7 -4- r6c1 =4= r5c2 =8 => r45c7,r5c2<>1, r5c2<>3
  23. Naked Triple: 1,4,8 in r579c2 => r134c2<>1
  24. Locked Candidates Type 2 (Claiming): 1 in c2 => r78c1,r8c3<>1
  25. Locked Candidates Type 2 (Claiming): 1 in r8 => r7c89,r9c89<>1
  26. Locked Triple: 2,4,8 in r789c9 => r2c9,r8c7<>2
  27. Row 2 / Column 7 → 2 (Hidden Single)
  28. Row 8 / Column 9 → 2 (Hidden Single)
  29. Row 8 / Column 3 → 8 (Hidden Single)
  30. Row 6 / Column 5 → 8 (Hidden Single)
  31. Row 5 / Column 2 → 8 (Hidden Single)
  32. Row 5 / Column 7 → 4 (Hidden Single)
  33. Row 6 / Column 7 → 1 (Naked Single)
  34. Row 6 / Column 3 → 7 (Naked Single)
  35. Row 8 / Column 7 → 5 (Naked Single)
  36. Row 4 / Column 7 → 9 (Full House)
  37. Row 8 / Column 1 → 7 (Naked Single)
  38. Row 8 / Column 8 → 1 (Full House)
  39. Row 9 / Column 8 → 9 (Naked Single)
  40. Row 1 / Column 8 → 3 (Naked Single)
  41. Row 2 / Column 9 → 1 (Full House)
  42. Row 7 / Column 8 → 7 (Naked Single)
  43. Row 5 / Column 8 → 5 (Full House)
  44. Row 2 / Column 5 → 9 (Naked Single)
  45. Row 2 / Column 1 → 3 (Full House)
  46. Row 5 / Column 6 → 1 (Naked Single)
  47. Row 4 / Column 1 → 1 (Naked Single)
  48. Row 6 / Column 1 → 4 (Naked Single)
  49. Row 5 / Column 3 → 9 (Naked Single)
  50. Row 5 / Column 4 → 3 (Full House)
  51. Row 3 / Column 1 → 9 (Naked Single)
  52. Row 7 / Column 1 → 5 (Full House)
  53. Row 4 / Column 3 → 2 (Naked Single)
  54. Row 3 / Column 3 → 1 (Full House)
  55. Row 4 / Column 2 → 3 (Full House)
  56. Row 6 / Column 4 → 6 (Naked Single)
  57. Row 6 / Column 9 → 3 (Full House)
  58. Row 4 / Column 9 → 6 (Full House)
  59. Row 7 / Column 5 → 1 (Naked Single)
  60. Row 1 / Column 5 → 5 (Full House)
  61. Row 7 / Column 2 → 4 (Naked Single)
  62. Row 9 / Column 2 → 1 (Full House)
  63. Row 9 / Column 4 → 5 (Naked Single)
  64. Row 7 / Column 9 → 8 (Naked Single)
  65. Row 9 / Column 9 → 4 (Full House)
  66. Row 9 / Column 6 → 8 (Full House)
  67. Row 4 / Column 4 → 7 (Naked Single)
  68. Row 4 / Column 6 → 5 (Full House)
  69. Row 7 / Column 6 → 2 (Naked Single)
  70. Row 7 / Column 4 → 9 (Full House)
  71. Row 3 / Column 4 → 2 (Naked Single)
  72. Row 1 / Column 4 → 1 (Full House)
  73. Row 1 / Column 6 → 6 (Naked Single)
  74. Row 1 / Column 2 → 2 (Full House)
  75. Row 3 / Column 2 → 6 (Full House)
  76. Row 3 / Column 6 → 7 (Full House)
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