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

This Sudoku Puzzle has 62 steps and it is solved using Hidden Single, Naked Single, Full House, Skyscraper, undefined, Locked Candidates Type 1 (Pointing) techniques.

Try To Solve This Puzzle

Solution Steps:

  1. Row 3 / Column 3 → 5 (Hidden Single)
  2. Row 1 / Column 8 → 2 (Hidden Single)
  3. Row 8 / Column 2 → 7 (Hidden Single)
  4. Row 8 / Column 8 → 5 (Hidden Single)
  5. Row 5 / Column 7 → 5 (Hidden Single)
  6. Row 6 / Column 6 → 2 (Hidden Single)
  7. Row 5 / Column 1 → 7 (Hidden Single)
  8. Row 5 / Column 5 → 1 (Naked Single)
  9. Row 5 / Column 9 → 8 (Naked Single)
  10. Row 5 / Column 3 → 2 (Full House)
  11. Row 8 / Column 5 → 9 (Naked Single)
  12. Row 4 / Column 5 → 5 (Hidden Single)
  13. Row 8 / Column 3 → 6 (Hidden Single)
  14. Row 9 / Column 2 → 2 (Hidden Single)
  15. Row 7 / Column 5 → 2 (Hidden Single)
  16. Row 4 / Column 4 → 7 (Hidden Single)
  17. Row 6 / Column 5 → 3 (Naked Single)
  18. Row 9 / Column 5 → 4 (Naked Single)
  19. Row 3 / Column 5 → 6 (Naked Single)
  20. Row 1 / Column 5 → 7 (Full House)
  21. Row 6 / Column 2 → 6 (Hidden Single)
  22. Row 7 / Column 4 → 3 (Hidden Single)
  23. Row 3 / Column 7 → 4 (Hidden Single)
  24. Row 2 / Column 4 → 4 (Hidden Single)
  25. Row 7 / Column 3 → 4 (Hidden Single)
  26. Row 1 / Column 1 → 6 (Hidden Single)
  27. Row 2 / Column 8 → 6 (Hidden Single)
  28. Row 6 / Column 8 → 4 (Hidden Single)
  29. Row 1 / Column 7 → 8 (Hidden Single)
  30. Row 7 / Column 9 → 6 (Hidden Single)
  31. Row 1 / Column 9 → 3 (Hidden Single)
  32. Row 9 / Column 7 → 3 (Hidden Single)
  33. Row 9 / Column 9 → 7 (Hidden Single)
  34. Row 6 / Column 7 → 7 (Hidden Single)
  35. Skyscraper: 9 in r1c4,r3c9 (connected by r6c49) => r3c6<>9
  36. 2-String Kite: 1 in r3c9,r4c2 (connected by r4c8,r6c9) => r3c2<>1
  37. 2-String Kite: 9 in r3c1,r7c7 (connected by r2c7,r3c9) => r7c1<>9
  38. Locked Candidates Type 1 (Pointing): 9 in b7 => r9c8<>9
  39. W-Wing: 1/9 in r1c3,r2c7 connected by 9 in r3c19 => r2c2<>1
  40. Row 2 / Column 2 → 3 (Naked Single)
  41. Row 3 / Column 2 → 8 (Naked Single)
  42. Row 4 / Column 2 → 1 (Full House)
  43. Row 6 / Column 3 → 8 (Full House)
  44. Row 4 / Column 8 → 9 (Naked Single)
  45. Row 4 / Column 6 → 8 (Full House)
  46. Row 6 / Column 4 → 9 (Full House)
  47. Row 6 / Column 9 → 1 (Full House)
  48. Row 3 / Column 9 → 9 (Full House)
  49. Row 2 / Column 7 → 1 (Full House)
  50. Row 2 / Column 6 → 9 (Full House)
  51. Row 7 / Column 7 → 9 (Full House)
  52. Row 8 / Column 6 → 1 (Naked Single)
  53. Row 3 / Column 6 → 3 (Full House)
  54. Row 1 / Column 4 → 1 (Full House)
  55. Row 3 / Column 1 → 1 (Full House)
  56. Row 8 / Column 4 → 8 (Full House)
  57. Row 1 / Column 3 → 9 (Full House)
  58. Row 9 / Column 3 → 1 (Full House)
  59. Row 7 / Column 1 → 8 (Naked Single)
  60. Row 7 / Column 8 → 1 (Full House)
  61. Row 9 / Column 8 → 8 (Full House)
  62. Row 9 / Column 1 → 9 (Full House)
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