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

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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