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

This Sudoku Puzzle has 61 steps and it is solved using Hidden Single, Locked Pair, Naked Single, Locked Candidates Type 2 (Claiming), Naked Triple, Skyscraper, Full House techniques.

Try To Solve This Puzzle

Solution Steps:

  1. Row 2 / Column 7 → 6 (Hidden Single)
  2. Row 5 / Column 7 → 7 (Hidden Single)
  3. Row 2 / Column 8 → 7 (Hidden Single)
  4. Row 6 / Column 3 → 6 (Hidden Single)
  5. Row 4 / Column 5 → 6 (Hidden Single)
  6. Row 7 / Column 9 → 6 (Hidden Single)
  7. Row 8 / Column 1 → 6 (Hidden Single)
  8. Row 1 / Column 3 → 7 (Hidden Single)
  9. Row 5 / Column 9 → 1 (Hidden Single)
  10. Row 7 / Column 2 → 7 (Hidden Single)
  11. Row 3 / Column 6 → 7 (Hidden Single)
  12. Row 9 / Column 4 → 7 (Hidden Single)
  13. Row 2 / Column 6 → 2 (Hidden Single)
  14. Locked Pair: 4,9 in r56c6 => r4c46,r5c5,r6c4,r8c6<>9, r5c5,r6c4,r8c6<>4
  15. Row 5 / Column 5 → 3 (Naked Single)
  16. Row 6 / Column 4 → 8 (Naked Single)
  17. Row 6 / Column 6 → 4 (Hidden Single)
  18. Row 5 / Column 6 → 9 (Naked Single)
  19. Row 6 / Column 2 → 3 (Hidden Single)
  20. Row 4 / Column 8 → 8 (Hidden Single)
  21. Row 4 / Column 3 → 9 (Naked Single)
  22. Row 4 / Column 2 → 2 (Naked Single)
  23. Row 8 / Column 7 → 8 (Hidden Single)
  24. Row 8 / Column 4 → 3 (Hidden Single)
  25. Locked Candidates Type 2 (Claiming): 5 in r8 => r7c45,r9c5<>5
  26. Naked Triple: 2,4,9 in r89c8,r9c9 => r79c7<>2, r79c7<>9
  27. Row 7 / Column 5 → 2 (Hidden Single)
  28. Skyscraper: 9 in r2c2,r7c1 (connected by r27c4) => r13c1,r8c2<>9
  29. Row 8 / Column 2 → 1 (Naked Single)
  30. Row 2 / Column 2 → 9 (Full House)
  31. Row 8 / Column 6 → 5 (Naked Single)
  32. Row 4 / Column 6 → 1 (Full House)
  33. Row 4 / Column 4 → 5 (Full House)
  34. Row 2 / Column 4 → 1 (Naked Single)
  35. Row 2 / Column 3 → 5 (Full House)
  36. Row 1 / Column 5 → 9 (Naked Single)
  37. Row 3 / Column 4 → 4 (Naked Single)
  38. Row 3 / Column 5 → 5 (Full House)
  39. Row 7 / Column 4 → 9 (Full House)
  40. Row 8 / Column 5 → 4 (Naked Single)
  41. Row 8 / Column 8 → 9 (Full House)
  42. Row 9 / Column 5 → 1 (Full House)
  43. Row 6 / Column 8 → 2 (Naked Single)
  44. Row 6 / Column 7 → 9 (Full House)
  45. Row 9 / Column 8 → 4 (Full House)
  46. Row 9 / Column 9 → 2 (Naked Single)
  47. Row 9 / Column 3 → 3 (Naked Single)
  48. Row 1 / Column 9 → 8 (Naked Single)
  49. Row 3 / Column 9 → 9 (Full House)
  50. Row 7 / Column 3 → 4 (Naked Single)
  51. Row 9 / Column 7 → 5 (Naked Single)
  52. Row 7 / Column 7 → 3 (Full House)
  53. Row 7 / Column 1 → 5 (Full House)
  54. Row 9 / Column 1 → 9 (Full House)
  55. Row 1 / Column 1 → 2 (Naked Single)
  56. Row 1 / Column 7 → 1 (Full House)
  57. Row 3 / Column 7 → 2 (Full House)
  58. Row 5 / Column 3 → 8 (Naked Single)
  59. Row 3 / Column 3 → 1 (Full House)
  60. Row 3 / Column 1 → 8 (Full House)
  61. Row 5 / Column 1 → 4 (Full House)
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