Solution for Medium Sudoku #21965278431103

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

This Sudoku Puzzle has 65 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Naked Triple, Naked Single, Full House techniques.

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Solution Steps:

  1. Row 4 / Column 5 → 4 (Hidden Single)
  2. Row 6 / Column 3 → 2 (Hidden Single)
  3. Row 5 / Column 2 → 7 (Hidden Single)
  4. Row 7 / Column 6 → 7 (Hidden Single)
  5. Row 1 / Column 5 → 7 (Hidden Single)
  6. Row 4 / Column 7 → 8 (Hidden Single)
  7. Row 6 / Column 5 → 8 (Hidden Single)
  8. Row 4 / Column 3 → 1 (Hidden Single)
  9. Row 5 / Column 1 → 3 (Hidden Single)
  10. Row 3 / Column 7 → 7 (Hidden Single)
  11. Row 8 / Column 6 → 3 (Hidden Single)
  12. Row 2 / Column 2 → 3 (Hidden Single)
  13. Row 7 / Column 3 → 3 (Hidden Single)
  14. Locked Candidates Type 1 (Pointing): 4 in b1 => r3c4689<>4
  15. Locked Candidates Type 1 (Pointing): 4 in b3 => r1c46<>4
  16. Locked Candidates Type 1 (Pointing): 1 in b5 => r5c9<>1
  17. Locked Candidates Type 1 (Pointing): 9 in b5 => r5c8<>9
  18. Locked Candidates Type 1 (Pointing): 1 in b9 => r7c4<>1
  19. Naked Triple: 5,6,9 in r12c7,r3c8 => r1c89,r3c9<>6, r1c8<>9, r3c9<>5
  20. Row 3 / Column 9 → 2 (Naked Single)
  21. Row 9 / Column 2 → 2 (Hidden Single)
  22. Row 2 / Column 1 → 2 (Hidden Single)
  23. Locked Candidates Type 1 (Pointing): 6 in b1 => r3c48<>6
  24. Locked Candidates Type 1 (Pointing): 9 in b1 => r3c468<>9
  25. Row 3 / Column 8 → 5 (Naked Single)
  26. Row 5 / Column 8 → 6 (Naked Single)
  27. Row 5 / Column 9 → 5 (Naked Single)
  28. Row 6 / Column 8 → 9 (Hidden Single)
  29. Row 6 / Column 7 → 1 (Naked Single)
  30. Row 6 / Column 9 → 3 (Full House)
  31. Row 1 / Column 9 → 4 (Naked Single)
  32. Row 1 / Column 8 → 3 (Naked Single)
  33. Row 8 / Column 9 → 6 (Naked Single)
  34. Row 7 / Column 9 → 1 (Full House)
  35. Row 7 / Column 7 → 5 (Naked Single)
  36. Row 4 / Column 2 → 5 (Hidden Single)
  37. Row 4 / Column 1 → 9 (Full House)
  38. Row 3 / Column 1 → 6 (Naked Single)
  39. Row 7 / Column 1 → 8 (Naked Single)
  40. Row 9 / Column 1 → 5 (Full House)
  41. Row 7 / Column 8 → 4 (Naked Single)
  42. Row 8 / Column 8 → 8 (Full House)
  43. Row 7 / Column 2 → 9 (Naked Single)
  44. Row 3 / Column 2 → 4 (Full House)
  45. Row 7 / Column 4 → 6 (Full House)
  46. Row 3 / Column 3 → 9 (Full House)
  47. Row 8 / Column 3 → 4 (Naked Single)
  48. Row 9 / Column 3 → 6 (Full House)
  49. Row 9 / Column 5 → 1 (Naked Single)
  50. Row 5 / Column 5 → 9 (Naked Single)
  51. Row 8 / Column 5 → 5 (Naked Single)
  52. Row 2 / Column 5 → 6 (Full House)
  53. Row 8 / Column 4 → 9 (Full House)
  54. Row 2 / Column 7 → 9 (Naked Single)
  55. Row 1 / Column 7 → 6 (Full House)
  56. Row 1 / Column 4 → 2 (Naked Single)
  57. Row 1 / Column 6 → 9 (Full House)
  58. Row 2 / Column 6 → 4 (Naked Single)
  59. Row 2 / Column 4 → 5 (Full House)
  60. Row 5 / Column 4 → 1 (Naked Single)
  61. Row 5 / Column 6 → 2 (Full House)
  62. Row 9 / Column 6 → 8 (Naked Single)
  63. Row 3 / Column 6 → 1 (Full House)
  64. Row 3 / Column 4 → 8 (Full House)
  65. Row 9 / Column 4 → 4 (Full House)
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