Solution for Hard Sudoku #1389716253498

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

This Sudoku Puzzle has 63 steps and it is solved using Naked Single, Full House, Hidden Single, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), undefined, Turbot Fish 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 4 / Column 9 → 1 (Naked Single)
  2. Row 4 / Column 8 → 8 (Naked Single)
  3. Row 4 / Column 4 → 6 (Naked Single)
  4. Row 4 / Column 7 → 7 (Naked Single)
  5. Row 4 / Column 3 → 3 (Full House)
  6. Row 2 / Column 2 → 4 (Hidden Single)
  7. Row 5 / Column 6 → 3 (Hidden Single)
  8. Row 3 / Column 4 → 8 (Hidden Single)
  9. Row 5 / Column 5 → 8 (Hidden Single)
  10. Row 6 / Column 3 → 8 (Hidden Single)
  11. Row 9 / Column 7 → 8 (Hidden Single)
  12. Row 7 / Column 7 → 6 (Hidden Single)
  13. Row 1 / Column 1 → 3 (Hidden Single)
  14. Row 9 / Column 2 → 3 (Hidden Single)
  15. Row 7 / Column 9 → 3 (Hidden Single)
  16. Row 2 / Column 7 → 3 (Hidden Single)
  17. Locked Candidates Type 1 (Pointing): 1 in b1 => r5c3<>1
  18. Locked Candidates Type 1 (Pointing): 2 in b3 => r1c23<>2
  19. Locked Candidates Type 1 (Pointing): 4 in b8 => r9c8<>4
  20. Locked Candidates Type 2 (Claiming): 9 in r3 => r1c23,r2c3<>9
  21. 2-String Kite: 5 in r1c4,r6c7 (connected by r5c4,r6c6) => r1c7<>5
  22. Turbot Fish: 5 r2c9 =5= r1c8 -5- r1c4 =5= r5c4 => r5c9<>5
  23. XY-Wing: 5/9/2 in r1c7,r29c9 => r8c7<>2
  24. XY-Wing: 1/2/5 in r36c1,r6c6 => r3c6<>5
  25. Row 3 / Column 6 → 7 (Naked Single)
  26. Row 9 / Column 5 → 7 (Hidden Single)
  27. Row 9 / Column 3 → 6 (Hidden Single)
  28. Row 8 / Column 5 → 6 (Hidden Single)
  29. Row 1 / Column 2 → 6 (Hidden Single)
  30. Row 5 / Column 1 → 6 (Hidden Single)
  31. Row 7 / Column 4 → 9 (Hidden Single)
  32. Row 1 / Column 3 → 7 (Hidden Single)
  33. Row 5 / Column 2 → 7 (Hidden Single)
  34. Row 5 / Column 4 → 1 (Hidden Single)
  35. Row 6 / Column 6 → 5 (Full House)
  36. Row 9 / Column 4 → 4 (Naked Single)
  37. Row 1 / Column 4 → 5 (Full House)
  38. Row 6 / Column 1 → 1 (Hidden Single)
  39. Row 2 / Column 3 → 1 (Hidden Single)
  40. Row 2 / Column 5 → 9 (Naked Single)
  41. Row 1 / Column 5 → 1 (Full House)
  42. Row 2 / Column 9 → 5 (Full House)
  43. Row 1 / Column 6 → 4 (Full House)
  44. Row 9 / Column 9 → 2 (Naked Single)
  45. Row 5 / Column 9 → 9 (Full House)
  46. Row 7 / Column 8 → 1 (Naked Single)
  47. Row 7 / Column 6 → 2 (Full House)
  48. Row 9 / Column 6 → 1 (Full House)
  49. Row 9 / Column 8 → 5 (Full House)
  50. Row 5 / Column 3 → 2 (Naked Single)
  51. Row 6 / Column 2 → 9 (Full House)
  52. Row 6 / Column 7 → 2 (Full House)
  53. Row 3 / Column 2 → 2 (Full House)
  54. Row 5 / Column 8 → 4 (Naked Single)
  55. Row 5 / Column 7 → 5 (Full House)
  56. Row 8 / Column 3 → 5 (Naked Single)
  57. Row 3 / Column 3 → 9 (Full House)
  58. Row 3 / Column 1 → 5 (Full House)
  59. Row 8 / Column 1 → 2 (Full House)
  60. Row 1 / Column 7 → 9 (Naked Single)
  61. Row 1 / Column 8 → 2 (Full House)
  62. Row 8 / Column 8 → 9 (Full House)
  63. Row 8 / Column 7 → 4 (Full House)
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