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

This Sudoku Puzzle has 64 steps and it is solved using Naked Single, Hidden Single, Full House, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), undefined, Skyscraper, AIC techniques.

Try To Solve This Puzzle

Solution Steps:

  1. Row 2 / Column 4 → 6 (Naked Single)
  2. Row 2 / Column 6 → 8 (Hidden Single)
  3. Row 8 / Column 2 → 8 (Hidden Single)
  4. Row 8 / Column 4 → 7 (Hidden Single)
  5. Row 3 / Column 6 → 4 (Hidden Single)
  6. Row 2 / Column 9 → 5 (Hidden Single)
  7. Row 8 / Column 6 → 5 (Hidden Single)
  8. Row 1 / Column 5 → 5 (Hidden Single)
  9. Row 1 / Column 1 → 8 (Hidden Single)
  10. Row 6 / Column 7 → 5 (Hidden Single)
  11. Row 4 / Column 1 → 5 (Hidden Single)
  12. Row 7 / Column 3 → 5 (Hidden Single)
  13. Row 9 / Column 1 → 4 (Hidden Single)
  14. Row 8 / Column 3 → 6 (Naked Single)
  15. Row 8 / Column 5 → 9 (Naked Single)
  16. Row 8 / Column 8 → 4 (Full House)
  17. Row 3 / Column 5 → 1 (Naked Single)
  18. Row 1 / Column 4 → 9 (Full House)
  19. Row 4 / Column 2 → 7 (Hidden Single)
  20. Row 1 / Column 9 → 4 (Hidden Single)
  21. Row 6 / Column 6 → 9 (Hidden Single)
  22. Row 2 / Column 3 → 4 (Hidden Single)
  23. Locked Candidates Type 1 (Pointing): 3 in b8 => r5c5<>3
  24. Locked Candidates Type 2 (Claiming): 1 in c1 => r5c3,r6c2<>1
  25. X-Wing: 2 r26 c28 => r1c28,r457c8<>2
  26. Skyscraper: 7 in r1c8,r3c1 (connected by r7c18) => r1c3,r3c7<>7
  27. W-Wing: 3/2 in r2c8,r5c3 connected by 2 in r1c37 => r5c8<>3
  28. AIC: 2 2- r5c3 =2= r1c3 =1= r1c2 =6= r6c2 =2= r6c8 -2 => r5c79,r6c2<>2
  29. Row 6 / Column 8 → 2 (Hidden Single)
  30. Row 2 / Column 8 → 3 (Naked Single)
  31. Row 2 / Column 2 → 2 (Full House)
  32. Row 1 / Column 3 → 1 (Naked Single)
  33. Row 1 / Column 2 → 6 (Naked Single)
  34. Row 1 / Column 8 → 7 (Naked Single)
  35. Row 1 / Column 7 → 2 (Full House)
  36. Row 6 / Column 2 → 3 (Naked Single)
  37. Row 5 / Column 3 → 2 (Naked Single)
  38. Row 6 / Column 4 → 1 (Naked Single)
  39. Row 4 / Column 4 → 3 (Full House)
  40. Row 6 / Column 1 → 6 (Full House)
  41. Row 5 / Column 1 → 1 (Full House)
  42. Row 7 / Column 2 → 9 (Naked Single)
  43. Row 9 / Column 2 → 1 (Full House)
  44. Row 5 / Column 5 → 6 (Naked Single)
  45. Row 4 / Column 6 → 2 (Full House)
  46. Row 9 / Column 6 → 6 (Full House)
  47. Row 4 / Column 9 → 6 (Naked Single)
  48. Row 4 / Column 8 → 1 (Full House)
  49. Row 7 / Column 8 → 6 (Naked Single)
  50. Row 5 / Column 8 → 9 (Full House)
  51. Row 3 / Column 9 → 9 (Naked Single)
  52. Row 3 / Column 7 → 6 (Full House)
  53. Row 5 / Column 7 → 8 (Naked Single)
  54. Row 5 / Column 9 → 3 (Full House)
  55. Row 9 / Column 9 → 2 (Naked Single)
  56. Row 7 / Column 9 → 8 (Full House)
  57. Row 7 / Column 7 → 7 (Naked Single)
  58. Row 9 / Column 7 → 9 (Full House)
  59. Row 9 / Column 5 → 3 (Naked Single)
  60. Row 7 / Column 5 → 2 (Full House)
  61. Row 7 / Column 1 → 3 (Full House)
  62. Row 9 / Column 3 → 7 (Full House)
  63. Row 3 / Column 1 → 7 (Full House)
  64. Row 3 / Column 3 → 3 (Full House)
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