Solution for Medium Sudoku #21173249586101

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

This Sudoku Puzzle has 65 steps and it is solved using Hidden Single, Naked Single, Full House, Locked Candidates Type 1 (Pointing), Naked Pair, Locked Candidates Type 2 (Claiming), Naked Triple 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 3 / Column 4 → 2 (Hidden Single)
  2. Row 2 / Column 1 → 3 (Hidden Single)
  3. Row 3 / Column 2 → 1 (Hidden Single)
  4. Row 1 / Column 7 → 1 (Hidden Single)
  5. Row 8 / Column 4 → 3 (Hidden Single)
  6. Row 9 / Column 8 → 3 (Hidden Single)
  7. Row 1 / Column 8 → 9 (Hidden Single)
  8. Row 7 / Column 8 → 8 (Hidden Single)
  9. Row 7 / Column 1 → 1 (Naked Single)
  10. Row 3 / Column 9 → 8 (Hidden Single)
  11. Row 4 / Column 3 → 1 (Hidden Single)
  12. Row 9 / Column 3 → 2 (Hidden Single)
  13. Row 8 / Column 3 → 5 (Hidden Single)
  14. Row 8 / Column 9 → 6 (Naked Single)
  15. Row 9 / Column 7 → 5 (Full House)
  16. Locked Candidates Type 1 (Pointing): 7 in b1 => r1c46<>7
  17. Locked Candidates Type 1 (Pointing): 7 in b2 => r46c6<>7
  18. Locked Candidates Type 1 (Pointing): 6 in b3 => r2c6<>6
  19. Locked Candidates Type 1 (Pointing): 9 in b8 => r9c12<>9
  20. Row 9 / Column 1 → 8 (Naked Single)
  21. Naked Pair: 4,5 in r1c49 => r1c56<>4, r1c56<>5
  22. Locked Candidates Type 2 (Claiming): 5 in c5 => r4c46,r6c46<>5
  23. Naked Pair: 4,6 in r9c25 => r9c46<>4, r9c6<>6
  24. Naked Pair: 4,5 in r17c4 => r4c4<>4
  25. Naked Pair: 1,9 in r69c6 => r4c6<>9
  26. Naked Triple: 1,7,9 in r6c146 => r6c278<>7, r6c27<>9
  27. Row 6 / Column 7 → 6 (Naked Single)
  28. Row 2 / Column 7 → 7 (Naked Single)
  29. Row 5 / Column 7 → 9 (Full House)
  30. Row 2 / Column 6 → 4 (Naked Single)
  31. Row 3 / Column 8 → 5 (Naked Single)
  32. Row 3 / Column 6 → 7 (Full House)
  33. Row 1 / Column 4 → 5 (Naked Single)
  34. Row 2 / Column 9 → 2 (Naked Single)
  35. Row 2 / Column 8 → 6 (Full House)
  36. Row 1 / Column 9 → 4 (Full House)
  37. Row 4 / Column 9 → 5 (Full House)
  38. Row 4 / Column 6 → 3 (Naked Single)
  39. Row 6 / Column 8 → 2 (Naked Single)
  40. Row 7 / Column 4 → 4 (Naked Single)
  41. Row 1 / Column 6 → 6 (Naked Single)
  42. Row 1 / Column 5 → 3 (Full House)
  43. Row 4 / Column 5 → 4 (Naked Single)
  44. Row 6 / Column 2 → 8 (Naked Single)
  45. Row 7 / Column 2 → 6 (Naked Single)
  46. Row 7 / Column 6 → 5 (Full House)
  47. Row 9 / Column 5 → 6 (Naked Single)
  48. Row 4 / Column 8 → 7 (Naked Single)
  49. Row 5 / Column 8 → 4 (Full House)
  50. Row 5 / Column 5 → 8 (Naked Single)
  51. Row 6 / Column 5 → 5 (Full House)
  52. Row 1 / Column 2 → 7 (Naked Single)
  53. Row 1 / Column 3 → 8 (Full House)
  54. Row 5 / Column 3 → 7 (Full House)
  55. Row 5 / Column 2 → 3 (Full House)
  56. Row 9 / Column 2 → 4 (Naked Single)
  57. Row 4 / Column 4 → 9 (Naked Single)
  58. Row 4 / Column 2 → 2 (Full House)
  59. Row 8 / Column 2 → 9 (Full House)
  60. Row 6 / Column 1 → 9 (Full House)
  61. Row 8 / Column 1 → 7 (Full House)
  62. Row 6 / Column 6 → 1 (Naked Single)
  63. Row 6 / Column 4 → 7 (Full House)
  64. Row 9 / Column 4 → 1 (Full House)
  65. Row 9 / Column 6 → 9 (Full House)
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