Solution for Medium Sudoku #31617829453102

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

This Sudoku Puzzle has 62 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Naked Triple, Locked Candidates Type 2 (Claiming), Naked Single, Full House techniques.

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Solution Steps:

  1. Row 2 / Column 7 → 6 (Hidden Single)
  2. Row 2 / Column 2 → 5 (Hidden Single)
  3. Row 8 / Column 9 → 5 (Hidden Single)
  4. Row 3 / Column 2 → 4 (Hidden Single)
  5. Locked Candidates Type 1 (Pointing): 3 in b3 => r9c9<>3
  6. Locked Candidates Type 1 (Pointing): 2 in b6 => r789c7<>2
  7. Locked Candidates Type 1 (Pointing): 4 in b6 => r9c9<>4
  8. Naked Triple: 1,2,6 in r46c3,r6c1 => r45c1<>1, r45c1<>2
  9. Locked Candidates Type 2 (Claiming): 2 in r5 => r4c56,r6c45<>2
  10. Naked Triple: 1,2,5 in r45c6,r5c4 => r46c5<>1
  11. Row 4 / Column 5 → 8 (Naked Single)
  12. Row 2 / Column 5 → 1 (Hidden Single)
  13. Row 2 / Column 4 → 4 (Hidden Single)
  14. Row 8 / Column 5 → 4 (Hidden Single)
  15. Row 9 / Column 8 → 4 (Hidden Single)
  16. Row 2 / Column 3 → 3 (Hidden Single)
  17. Naked Triple: 2,7,9 in r279c1 => r16c1<>2, r1c1<>9
  18. Locked Candidates Type 1 (Pointing): 2 in b4 => r138c3<>2
  19. Row 1 / Column 2 → 2 (Hidden Single)
  20. Row 9 / Column 2 → 8 (Naked Single)
  21. Row 8 / Column 2 → 6 (Full House)
  22. Row 7 / Column 4 → 8 (Hidden Single)
  23. Row 7 / Column 6 → 5 (Hidden Single)
  24. Row 4 / Column 6 → 1 (Naked Single)
  25. Row 4 / Column 3 → 2 (Naked Single)
  26. Row 5 / Column 6 → 2 (Naked Single)
  27. Row 4 / Column 7 → 7 (Naked Single)
  28. Row 5 / Column 4 → 5 (Naked Single)
  29. Row 8 / Column 6 → 9 (Naked Single)
  30. Row 4 / Column 9 → 4 (Naked Single)
  31. Row 4 / Column 1 → 5 (Full House)
  32. Row 7 / Column 7 → 3 (Naked Single)
  33. Row 8 / Column 7 → 8 (Naked Single)
  34. Row 5 / Column 1 → 4 (Naked Single)
  35. Row 5 / Column 9 → 1 (Full House)
  36. Row 8 / Column 3 → 7 (Naked Single)
  37. Row 8 / Column 8 → 2 (Full House)
  38. Row 7 / Column 5 → 2 (Naked Single)
  39. Row 9 / Column 4 → 3 (Full House)
  40. Row 9 / Column 7 → 1 (Naked Single)
  41. Row 6 / Column 7 → 2 (Full House)
  42. Row 6 / Column 9 → 8 (Full House)
  43. Row 9 / Column 9 → 9 (Naked Single)
  44. Row 7 / Column 8 → 7 (Full House)
  45. Row 7 / Column 1 → 9 (Full House)
  46. Row 9 / Column 1 → 2 (Full House)
  47. Row 6 / Column 4 → 9 (Naked Single)
  48. Row 3 / Column 4 → 2 (Full House)
  49. Row 6 / Column 5 → 3 (Full House)
  50. Row 3 / Column 5 → 9 (Full House)
  51. Row 1 / Column 9 → 3 (Naked Single)
  52. Row 3 / Column 9 → 7 (Full House)
  53. Row 2 / Column 8 → 9 (Naked Single)
  54. Row 2 / Column 1 → 7 (Full House)
  55. Row 1 / Column 8 → 8 (Full House)
  56. Row 3 / Column 3 → 6 (Naked Single)
  57. Row 3 / Column 6 → 3 (Full House)
  58. Row 1 / Column 6 → 6 (Full House)
  59. Row 1 / Column 1 → 1 (Naked Single)
  60. Row 1 / Column 3 → 9 (Full House)
  61. Row 6 / Column 3 → 1 (Full House)
  62. Row 6 / Column 1 → 6 (Full House)
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