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

This Sudoku Puzzle has 65 steps and it is solved using Naked Single, Hidden Single, Locked Candidates Type 1 (Pointing), Locked Pair, Locked Candidates Type 2 (Claiming), Hidden Pair, Grouped Discontinuous Nice Loop, undefined, Discontinuous Nice Loop, Turbot Fish, Naked Pair, Full House techniques.

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

Solution Steps:

  1. Row 5 / Column 9 → 4 (Naked Single)
  2. Row 5 / Column 2 → 5 (Hidden Single)
  3. Row 5 / Column 4 → 6 (Hidden Single)
  4. Row 7 / Column 4 → 4 (Hidden Single)
  5. Locked Candidates Type 1 (Pointing): 8 in b2 => r8c4<>8
  6. Locked Pair: 2,9 in r8c46 => r8c1235<>2, r8c125<>9
  7. Locked Candidates Type 2 (Claiming): 3 in c9 => r1c78,r2c78,r3c78<>3
  8. Hidden Pair: 4,7 in r49c3 => r4c3<>2, r9c3<>3
  9. Grouped Discontinuous Nice Loop: 3 r1c6 -3- r6c6 -2- r6c1 -6- r23c1 =6= r3c3 =3= r1c23 -3- r1c6 => r1c6<>3
  10. Almost Locked Set XZ-Rule: A=r6c16 {236}, B=r356c8 {2367}, X=3, Z=6 => r3c1<>6
  11. Discontinuous Nice Loop: 3 r3c3 -3- r3c9 -9- r3c1 -2- r6c1 -6- r2c1 =6= r3c3 => r3c3<>3
  12. Locked Candidates Type 1 (Pointing): 3 in b1 => r1c49<>3
  13. Discontinuous Nice Loop: 6 r8c3 -6- r3c3 =6= r2c1 =5= r1c3 =3= r8c3 => r8c3<>6
  14. Turbot Fish: 6 r3c3 =6= r7c3 -6- r7c7 =6= r8c8 => r3c8<>6
  15. Naked Pair: 2,7 in r35c8 => r1246c8<>2, r246c8<>7
  16. Row 6 / Column 8 → 3 (Naked Single)
  17. Row 4 / Column 8 → 1 (Naked Single)
  18. Row 6 / Column 6 → 2 (Naked Single)
  19. Row 5 / Column 5 → 7 (Naked Single)
  20. Row 5 / Column 8 → 2 (Full House)
  21. Row 4 / Column 7 → 7 (Full House)
  22. Row 6 / Column 1 → 6 (Naked Single)
  23. Row 6 / Column 2 → 7 (Full House)
  24. Row 8 / Column 6 → 9 (Naked Single)
  25. Row 4 / Column 5 → 9 (Naked Single)
  26. Row 4 / Column 4 → 3 (Full House)
  27. Row 3 / Column 8 → 7 (Naked Single)
  28. Row 4 / Column 3 → 4 (Naked Single)
  29. Row 1 / Column 6 → 4 (Naked Single)
  30. Row 2 / Column 6 → 3 (Full House)
  31. Row 8 / Column 4 → 2 (Naked Single)
  32. Row 2 / Column 5 → 2 (Naked Single)
  33. Row 9 / Column 3 → 7 (Naked Single)
  34. Row 1 / Column 8 → 5 (Naked Single)
  35. Row 2 / Column 7 → 6 (Naked Single)
  36. Row 2 / Column 9 → 9 (Naked Single)
  37. Row 8 / Column 8 → 6 (Naked Single)
  38. Row 2 / Column 8 → 4 (Full House)
  39. Row 7 / Column 7 → 1 (Naked Single)
  40. Row 1 / Column 9 → 1 (Naked Single)
  41. Row 2 / Column 1 → 5 (Naked Single)
  42. Row 2 / Column 4 → 7 (Full House)
  43. Row 3 / Column 9 → 3 (Naked Single)
  44. Row 7 / Column 9 → 5 (Full House)
  45. Row 9 / Column 7 → 3 (Full House)
  46. Row 9 / Column 2 → 8 (Naked Single)
  47. Row 4 / Column 2 → 2 (Naked Single)
  48. Row 4 / Column 1 → 8 (Full House)
  49. Row 8 / Column 1 → 1 (Naked Single)
  50. Row 8 / Column 2 → 3 (Naked Single)
  51. Row 9 / Column 5 → 1 (Naked Single)
  52. Row 8 / Column 5 → 8 (Full House)
  53. Row 9 / Column 1 → 4 (Full House)
  54. Row 8 / Column 3 → 5 (Full House)
  55. Row 1 / Column 2 → 9 (Naked Single)
  56. Row 7 / Column 2 → 6 (Full House)
  57. Row 1 / Column 4 → 8 (Naked Single)
  58. Row 3 / Column 4 → 9 (Full House)
  59. Row 3 / Column 1 → 2 (Naked Single)
  60. Row 7 / Column 1 → 9 (Full House)
  61. Row 7 / Column 3 → 2 (Full House)
  62. Row 1 / Column 7 → 2 (Naked Single)
  63. Row 1 / Column 3 → 3 (Full House)
  64. Row 3 / Column 3 → 6 (Full House)
  65. Row 3 / Column 7 → 8 (Full House)
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