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

This Sudoku Puzzle has 61 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Naked Triple, Naked Single, Skyscraper, Full House 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 8 / Column 9 → 2 (Hidden Single)
  2. Row 2 / Column 7 → 5 (Hidden Single)
  3. Row 9 / Column 9 → 5 (Hidden Single)
  4. Row 4 / Column 5 → 5 (Hidden Single)
  5. Row 5 / Column 1 → 5 (Hidden Single)
  6. Locked Candidates Type 1 (Pointing): 1 in b3 => r46c9<>1
  7. Locked Candidates Type 2 (Claiming): 4 in c4 => r7c56,r8c56,r9c6<>4
  8. Row 8 / Column 3 → 4 (Hidden Single)
  9. Naked Triple: 4,7,9 in r179c8 => r345c8<>7, r34c8<>9
  10. Row 3 / Column 8 → 3 (Naked Single)
  11. Row 4 / Column 9 → 3 (Hidden Single)
  12. Naked Triple: 1,7,9 in r2c139 => r2c56<>7, r2c6<>9
  13. Skyscraper: 9 in r2c9,r4c7 (connected by r24c3) => r6c9<>9
  14. Row 6 / Column 9 → 7 (Naked Single)
  15. Row 1 / Column 8 → 7 (Hidden Single)
  16. Row 9 / Column 8 → 4 (Naked Single)
  17. Row 7 / Column 8 → 9 (Naked Single)
  18. Row 8 / Column 7 → 7 (Full House)
  19. Row 7 / Column 4 → 4 (Hidden Single)
  20. Row 8 / Column 6 → 9 (Hidden Single)
  21. Row 7 / Column 5 → 7 (Hidden Single)
  22. Row 9 / Column 4 → 1 (Naked Single)
  23. Row 7 / Column 6 → 3 (Naked Single)
  24. Row 2 / Column 6 → 4 (Naked Single)
  25. Row 8 / Column 5 → 6 (Naked Single)
  26. Row 9 / Column 6 → 8 (Full House)
  27. Row 2 / Column 5 → 3 (Naked Single)
  28. Row 6 / Column 5 → 4 (Full House)
  29. Row 8 / Column 1 → 8 (Naked Single)
  30. Row 8 / Column 2 → 3 (Full House)
  31. Row 9 / Column 3 → 7 (Naked Single)
  32. Row 9 / Column 2 → 6 (Full House)
  33. Row 5 / Column 3 → 3 (Hidden Single)
  34. Row 2 / Column 1 → 7 (Hidden Single)
  35. Row 5 / Column 2 → 7 (Hidden Single)
  36. Row 5 / Column 4 → 2 (Naked Single)
  37. Row 1 / Column 4 → 9 (Naked Single)
  38. Row 3 / Column 4 → 7 (Full House)
  39. Row 5 / Column 8 → 6 (Naked Single)
  40. Row 4 / Column 8 → 2 (Full House)
  41. Row 3 / Column 6 → 5 (Naked Single)
  42. Row 1 / Column 6 → 2 (Full House)
  43. Row 5 / Column 6 → 1 (Naked Single)
  44. Row 5 / Column 7 → 8 (Full House)
  45. Row 6 / Column 6 → 6 (Naked Single)
  46. Row 4 / Column 6 → 7 (Full House)
  47. Row 6 / Column 1 → 1 (Naked Single)
  48. Row 4 / Column 1 → 6 (Full House)
  49. Row 4 / Column 3 → 9 (Naked Single)
  50. Row 4 / Column 7 → 1 (Full House)
  51. Row 6 / Column 7 → 9 (Full House)
  52. Row 2 / Column 3 → 1 (Naked Single)
  53. Row 2 / Column 9 → 9 (Full House)
  54. Row 3 / Column 9 → 1 (Full House)
  55. Row 3 / Column 2 → 9 (Full House)
  56. Row 6 / Column 2 → 8 (Naked Single)
  57. Row 6 / Column 3 → 2 (Full House)
  58. Row 7 / Column 3 → 5 (Naked Single)
  59. Row 1 / Column 3 → 8 (Full House)
  60. Row 1 / Column 2 → 5 (Full House)
  61. Row 7 / Column 2 → 1 (Full House)
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