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

This Sudoku Puzzle has 61 steps and it is solved using Naked Single, Full House, Hidden Single, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Skyscraper, undefined techniques.

Try To Solve This Puzzle

Solution Steps:

  1. Row 4 / Column 9 → 8 (Naked Single)
  2. Row 4 / Column 2 → 2 (Naked Single)
  3. Row 4 / Column 8 → 3 (Naked Single)
  4. Row 4 / Column 4 → 4 (Naked Single)
  5. Row 4 / Column 6 → 6 (Full House)
  6. Row 9 / Column 9 → 9 (Hidden Single)
  7. Row 9 / Column 4 → 7 (Hidden Single)
  8. Row 6 / Column 4 → 2 (Hidden Single)
  9. Row 9 / Column 7 → 3 (Hidden Single)
  10. Row 2 / Column 5 → 4 (Hidden Single)
  11. Row 8 / Column 2 → 3 (Hidden Single)
  12. Row 9 / Column 1 → 2 (Hidden Single)
  13. Row 8 / Column 1 → 9 (Hidden Single)
  14. Row 8 / Column 8 → 6 (Hidden Single)
  15. Locked Candidates Type 1 (Pointing): 1 in b8 => r356c5<>1
  16. Locked Candidates Type 2 (Claiming): 5 in r8 => r79c5<>5
  17. Locked Candidates Type 2 (Claiming): 8 in r8 => r79c5<>8
  18. Skyscraper: 9 in r1c3,r6c2 (connected by r16c5) => r2c2,r5c3<>9
  19. Row 2 / Column 4 → 9 (Hidden Single)
  20. Row 6 / Column 2 → 9 (Hidden Single)
  21. Row 1 / Column 3 → 9 (Hidden Single)
  22. Row 5 / Column 5 → 9 (Hidden Single)
  23. Row 5 / Column 6 → 3 (Hidden Single)
  24. X-Wing: 1 r26 c68 => r3c6,r79c8<>1
  25. Row 9 / Column 5 → 1 (Hidden Single)
  26. Row 7 / Column 5 → 6 (Naked Single)
  27. Row 9 / Column 3 → 6 (Hidden Single)
  28. Row 3 / Column 1 → 6 (Hidden Single)
  29. Row 3 / Column 5 → 3 (Hidden Single)
  30. Row 1 / Column 1 → 3 (Hidden Single)
  31. Row 1 / Column 9 → 7 (Hidden Single)
  32. Row 6 / Column 8 → 7 (Hidden Single)
  33. Row 6 / Column 1 → 8 (Naked Single)
  34. Row 6 / Column 5 → 5 (Naked Single)
  35. Row 1 / Column 5 → 8 (Full House)
  36. Row 6 / Column 6 → 1 (Full House)
  37. Row 1 / Column 7 → 5 (Full House)
  38. Row 5 / Column 4 → 8 (Full House)
  39. Row 5 / Column 7 → 1 (Naked Single)
  40. Row 5 / Column 9 → 5 (Full House)
  41. Row 8 / Column 4 → 5 (Naked Single)
  42. Row 3 / Column 4 → 1 (Full House)
  43. Row 8 / Column 6 → 8 (Full House)
  44. Row 3 / Column 9 → 2 (Naked Single)
  45. Row 7 / Column 9 → 1 (Full House)
  46. Row 3 / Column 7 → 8 (Naked Single)
  47. Row 2 / Column 8 → 1 (Full House)
  48. Row 7 / Column 7 → 2 (Full House)
  49. Row 3 / Column 3 → 7 (Naked Single)
  50. Row 3 / Column 6 → 5 (Full House)
  51. Row 2 / Column 6 → 7 (Full House)
  52. Row 2 / Column 1 → 5 (Naked Single)
  53. Row 2 / Column 2 → 8 (Full House)
  54. Row 5 / Column 3 → 4 (Naked Single)
  55. Row 5 / Column 1 → 7 (Full House)
  56. Row 7 / Column 3 → 8 (Full House)
  57. Row 7 / Column 1 → 4 (Full House)
  58. Row 9 / Column 2 → 5 (Naked Single)
  59. Row 7 / Column 2 → 7 (Full House)
  60. Row 7 / Column 8 → 5 (Full House)
  61. Row 9 / Column 8 → 8 (Full House)
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