5
8
7
3
9
7
9
3
5
8
3
8
4
7
5
8
3
7
9
3
9
7
8
1
3
8
8
9
3
7
3
5
9
8
3

This Sudoku Puzzle has 55 steps and it is solved using Hidden Single, Locked Triple, Naked Single, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Locked Pair, 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 6 / Column 3 → 5 (Hidden Single)
  2. Row 8 / Column 2 → 5 (Hidden Single)
  3. Locked Triple: 2,4,6 in r789c5 => r3c5,r78c4,r8c6<>2, r3c5,r78c4,r8c6<>6, r78c4,r8c6<>4
  4. Row 3 / Column 5 → 6 (Naked Single)
  5. Row 8 / Column 6 → 1 (Naked Single)
  6. Row 7 / Column 4 → 7 (Naked Single)
  7. Row 8 / Column 4 → 7 (Naked Single)
  8. Row 5 / Column 7 → 7 (Hidden Single)
  9. Row 5 / Column 8 → 5 (Hidden Single)
  10. Row 7 / Column 7 → 5 (Hidden Single)
  11. Row 5 / Column 9 → 9 (Hidden Single)
  12. Row 7 / Column 8 → 9 (Hidden Single)
  13. Row 1 / Column 7 → 9 (Hidden Single)
  14. Locked Candidates Type 1 (Pointing): 4 in b2 => r1c2<>4
  15. Locked Candidates Type 1 (Pointing): 1 in b6 => r4c23<>1
  16. Locked Candidates Type 2 (Claiming): 6 in r8 => r7c9,r9c78<>6
  17. Locked Candidates Type 2 (Claiming): 6 in r7 => r9c13<>6
  18. Locked Candidates Type 2 (Claiming): 6 in c4 => r56c6<>6
  19. Locked Pair: 2,4 in r56c6 => r1c6,r56c4<>2, r1c6,r56c4<>4
  20. Row 1 / Column 6 → 4 (Naked Single)
  21. Row 5 / Column 4 → 6 (Naked Single)
  22. Row 6 / Column 4 → 6 (Naked Single)
  23. Row 5 / Column 6 → 2 (Naked Single)
  24. Row 6 / Column 6 → 2 (Naked Single)
  25. Row 6 / Column 9 → 4 (Naked Single)
  26. Locked Candidates Type 1 (Pointing): 2 in b4 => r4c789<>2
  27. Locked Pair: 1,6 in r4c78 => r4c239<>6, r4c9<>1
  28. Row 4 / Column 9 → 6 (Naked Single)
  29. Row 4 / Column 7 → 1 (Naked Single)
  30. Row 4 / Column 8 → 1 (Naked Single)
  31. Row 8 / Column 9 → 2 (Naked Single)
  32. Row 9 / Column 7 → 2 (Naked Single)
  33. Row 1 / Column 9 → 1 (Naked Single)
  34. Row 7 / Column 9 → 1 (Naked Single)
  35. Row 8 / Column 5 → 4 (Naked Single)
  36. Row 9 / Column 8 → 4 (Naked Single)
  37. Row 2 / Column 7 → 6 (Naked Single)
  38. Row 2 / Column 8 → 2 (Full House)
  39. Row 9 / Column 5 → 4 (Naked Single)
  40. Row 1 / Column 4 → 2 (Naked Single)
  41. Row 7 / Column 5 → 2 (Naked Single)
  42. Row 8 / Column 8 → 6 (Naked Single)
  43. Row 9 / Column 1 → 1 (Naked Single)
  44. Row 9 / Column 3 → 1 (Naked Single)
  45. Row 1 / Column 2 → 6 (Naked Single)
  46. Row 3 / Column 4 → 1 (Naked Single)
  47. Row 2 / Column 1 → 4 (Naked Single)
  48. Row 2 / Column 2 → 1 (Full House)
  49. Row 3 / Column 1 → 2 (Full House)
  50. Row 5 / Column 3 → 4 (Full House)
  51. Row 7 / Column 1 → 6 (Full House)
  52. Row 5 / Column 2 → 4 (Full House)
  53. Row 4 / Column 2 → 2 (Naked Single)
  54. Row 4 / Column 3 → 2 (Naked Single)
  55. Row 7 / Column 3 → 6 (Naked Single)
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