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

This Sudoku Puzzle has 65 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Naked Single, Skyscraper, undefined, Turbot Fish, Hidden Rectangle, Multi Colors 1, Full House, Naked Pair, Remote Pair techniques.

Try To Solve This Puzzle

Solution Steps:

  1. Row 4 / Column 2 → 6 (Hidden Single)
  2. Row 8 / Column 1 → 2 (Hidden Single)
  3. Row 6 / Column 2 → 2 (Hidden Single)
  4. Row 3 / Column 3 → 2 (Hidden Single)
  5. Row 8 / Column 8 → 6 (Hidden Single)
  6. Row 1 / Column 3 → 1 (Hidden Single)
  7. Row 7 / Column 3 → 6 (Hidden Single)
  8. Locked Candidates Type 1 (Pointing): 5 in b2 => r6c6<>5
  9. Locked Candidates Type 1 (Pointing): 7 in b6 => r6c146<>7
  10. Locked Candidates Type 1 (Pointing): 8 in b6 => r6c146<>8
  11. Row 6 / Column 6 → 4 (Naked Single)
  12. Row 5 / Column 1 → 8 (Hidden Single)
  13. Row 7 / Column 4 → 4 (Hidden Single)
  14. Row 5 / Column 2 → 4 (Hidden Single)
  15. Row 9 / Column 1 → 4 (Hidden Single)
  16. Row 4 / Column 4 → 8 (Hidden Single)
  17. Locked Candidates Type 1 (Pointing): 7 in b4 => r9c3<>7
  18. Skyscraper: 9 in r7c1,r8c4 (connected by r6c14) => r7c5<>9
  19. X-Wing: 9 c35 r49 => r9c79<>9
  20. Turbot Fish: 7 r2c8 =7= r2c2 -7- r9c2 =7= r7c1 => r7c8<>7
  21. XYZ-Wing: 7/8/9 in r67c7,r8c9 => r9c7<>7
  22. Hidden Rectangle: 4/7 in r1c58,r3c58 => r1c8<>7
  23. Hidden Rectangle: 2/7 in r4c56,r7c56 => r7c5<>7
  24. Multi Colors 1: 7 (r2c2,r7c1) / (r2c8,r9c2), (r6c7) / (r6c8) => r7c7<>7
  25. Locked Candidates Type 1 (Pointing): 7 in b9 => r13c9<>7
  26. XY-Chain: 2 2- r4c6 -7- r5c4 -5- r6c4 -9- r8c4 -7- r8c9 -9- r7c7 -8- r7c5 -2 => r4c5,r7c6<>2
  27. Row 4 / Column 6 → 2 (Hidden Single)
  28. Row 7 / Column 5 → 2 (Hidden Single)
  29. XY-Wing: 7/8/9 in r7c67,r8c4 => r8c9<>9
  30. Row 8 / Column 9 → 7 (Naked Single)
  31. Row 8 / Column 4 → 9 (Full House)
  32. Row 6 / Column 4 → 5 (Naked Single)
  33. Row 5 / Column 4 → 7 (Full House)
  34. Row 4 / Column 5 → 9 (Full House)
  35. Row 5 / Column 3 → 5 (Full House)
  36. Row 4 / Column 3 → 7 (Full House)
  37. Row 6 / Column 1 → 9 (Full House)
  38. Row 9 / Column 3 → 9 (Full House)
  39. Naked Pair: 3,5 in r19c9 => r37c9<>5
  40. Remote Pair: 5/7 r2c8 -7- r2c2 -5- r9c2 -7- r7c1 => r7c8<>5
  41. Row 7 / Column 1 → 5 (Hidden Single)
  42. Row 9 / Column 2 → 7 (Full House)
  43. Row 2 / Column 2 → 5 (Full House)
  44. Row 2 / Column 8 → 7 (Full House)
  45. Row 9 / Column 5 → 8 (Naked Single)
  46. Row 7 / Column 6 → 7 (Full House)
  47. Row 6 / Column 8 → 8 (Naked Single)
  48. Row 6 / Column 7 → 7 (Full House)
  49. Row 9 / Column 7 → 3 (Naked Single)
  50. Row 9 / Column 9 → 5 (Full House)
  51. Row 3 / Column 6 → 5 (Naked Single)
  52. Row 1 / Column 6 → 8 (Full House)
  53. Row 7 / Column 8 → 1 (Naked Single)
  54. Row 1 / Column 7 → 6 (Naked Single)
  55. Row 1 / Column 9 → 3 (Naked Single)
  56. Row 3 / Column 8 → 4 (Naked Single)
  57. Row 1 / Column 8 → 5 (Full House)
  58. Row 7 / Column 9 → 9 (Naked Single)
  59. Row 3 / Column 9 → 1 (Full House)
  60. Row 3 / Column 7 → 9 (Full House)
  61. Row 7 / Column 7 → 8 (Full House)
  62. Row 1 / Column 1 → 7 (Naked Single)
  63. Row 1 / Column 5 → 4 (Full House)
  64. Row 3 / Column 5 → 7 (Full House)
  65. Row 3 / Column 1 → 6 (Full House)
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