Solution for Medium Sudoku #22516823947102

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

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 8 → 4 (Hidden Single)
  2. Row 7 / Column 8 → 5 (Hidden Single)
  3. Row 9 / Column 2 → 4 (Hidden Single)
  4. Row 2 / Column 7 → 9 (Hidden Single)
  5. Locked Candidates Type 1 (Pointing): 2 in b8 => r7c123<>2
  6. Locked Candidates Type 1 (Pointing): 9 in b8 => r9c1<>9
  7. Locked Candidates Type 1 (Pointing): 7 in b9 => r9c1<>7
  8. Naked Triple: 1,2,5 in r13c4,r3c6 => r1c56<>1, r1c56<>2
  9. Locked Candidates Type 2 (Claiming): 2 in c5 => r45c4,r56c6<>2
  10. Naked Triple: 1,2,4 in r46c5,r6c6 => r5c46<>1
  11. Row 5 / Column 6 → 8 (Naked Single)
  12. Row 5 / Column 8 → 1 (Hidden Single)
  13. Row 5 / Column 2 → 9 (Hidden Single)
  14. Row 4 / Column 8 → 9 (Hidden Single)
  15. Row 8 / Column 1 → 9 (Hidden Single)
  16. Row 3 / Column 8 → 7 (Hidden Single)
  17. Naked Triple: 2,3,6 in r1c138 => r1c49<>2, r1c9<>3
  18. Locked Candidates Type 1 (Pointing): 2 in b2 => r3c279<>2
  19. Row 2 / Column 9 → 2 (Hidden Single)
  20. Row 2 / Column 1 → 8 (Naked Single)
  21. Row 2 / Column 2 → 5 (Full House)
  22. Row 4 / Column 3 → 8 (Hidden Single)
  23. Row 4 / Column 5 → 4 (Hidden Single)
  24. Row 1 / Column 5 → 9 (Naked Single)
  25. Row 6 / Column 6 → 1 (Naked Single)
  26. Row 1 / Column 6 → 4 (Naked Single)
  27. Row 9 / Column 5 → 1 (Naked Single)
  28. Row 6 / Column 5 → 2 (Full House)
  29. Row 3 / Column 6 → 2 (Naked Single)
  30. Row 9 / Column 1 → 3 (Naked Single)
  31. Row 9 / Column 4 → 8 (Naked Single)
  32. Row 6 / Column 2 → 3 (Naked Single)
  33. Row 7 / Column 6 → 6 (Naked Single)
  34. Row 9 / Column 6 → 9 (Full House)
  35. Row 7 / Column 4 → 2 (Full House)
  36. Row 1 / Column 1 → 2 (Naked Single)
  37. Row 9 / Column 9 → 7 (Naked Single)
  38. Row 9 / Column 7 → 6 (Full House)
  39. Row 3 / Column 2 → 6 (Naked Single)
  40. Row 1 / Column 3 → 3 (Full House)
  41. Row 7 / Column 2 → 8 (Naked Single)
  42. Row 8 / Column 2 → 2 (Full House)
  43. Row 7 / Column 3 → 7 (Naked Single)
  44. Row 7 / Column 1 → 1 (Full House)
  45. Row 4 / Column 1 → 7 (Full House)
  46. Row 8 / Column 3 → 6 (Full House)
  47. Row 6 / Column 9 → 5 (Naked Single)
  48. Row 8 / Column 8 → 3 (Naked Single)
  49. Row 1 / Column 8 → 6 (Full House)
  50. Row 8 / Column 9 → 8 (Full House)
  51. Row 5 / Column 3 → 2 (Naked Single)
  52. Row 6 / Column 3 → 4 (Full House)
  53. Row 6 / Column 7 → 7 (Full House)
  54. Row 4 / Column 4 → 3 (Naked Single)
  55. Row 4 / Column 7 → 2 (Full House)
  56. Row 5 / Column 7 → 3 (Full House)
  57. Row 5 / Column 4 → 7 (Full House)
  58. Row 3 / Column 7 → 5 (Full House)
  59. Row 1 / Column 9 → 1 (Naked Single)
  60. Row 1 / Column 4 → 5 (Full House)
  61. Row 3 / Column 4 → 1 (Full House)
  62. Row 3 / Column 9 → 3 (Full House)
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