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

This Sudoku Puzzle has 58 steps and it is solved using Hidden Single, Locked Triple, Naked Single, Full House, undefined, Remote Pair techniques.

Naked Single Explanation
Hidden Single Explanation
Full House Explanation
Try To Solve This Puzzle

Solution Steps:

  1. Row 1 / Column 6 → 8 (Hidden Single)
  2. Row 5 / Column 5 → 4 (Hidden Single)
  3. Row 4 / Column 6 → 1 (Hidden Single)
  4. Row 4 / Column 4 → 5 (Hidden Single)
  5. Row 2 / Column 6 → 5 (Hidden Single)
  6. Row 4 / Column 2 → 6 (Hidden Single)
  7. Row 5 / Column 4 → 6 (Hidden Single)
  8. Locked Triple: 1,3,8 in r5c123 => r5c79,r6c2<>3, r4c3,r5c9<>8
  9. Row 4 / Column 9 → 8 (Hidden Single)
  10. Row 3 / Column 9 → 4 (Hidden Single)
  11. Row 2 / Column 2 → 4 (Hidden Single)
  12. Row 6 / Column 2 → 2 (Naked Single)
  13. Row 4 / Column 3 → 4 (Naked Single)
  14. Row 7 / Column 2 → 5 (Naked Single)
  15. Row 9 / Column 2 → 7 (Naked Single)
  16. Row 8 / Column 2 → 8 (Naked Single)
  17. Row 5 / Column 2 → 3 (Full House)
  18. Row 7 / Column 1 → 4 (Hidden Single)
  19. Row 6 / Column 8 → 4 (Hidden Single)
  20. Row 8 / Column 8 → 7 (Hidden Single)
  21. Row 8 / Column 1 → 1 (Hidden Single)
  22. Row 5 / Column 1 → 8 (Naked Single)
  23. Row 5 / Column 3 → 1 (Full House)
  24. Row 9 / Column 8 → 1 (Hidden Single)
  25. Row 7 / Column 5 → 1 (Hidden Single)
  26. Row 8 / Column 6 → 6 (Hidden Single)
  27. Row 9 / Column 1 → 6 (Hidden Single)
  28. Row 3 / Column 3 → 8 (Hidden Single)
  29. Row 3 / Column 8 → 6 (Hidden Single)
  30. Row 7 / Column 7 → 6 (Hidden Single)
  31. Row 3 / Column 7 → 5 (Hidden Single)
  32. Row 1 / Column 3 → 5 (Hidden Single)
  33. Row 1 / Column 5 → 6 (Hidden Single)
  34. Row 9 / Column 9 → 5 (Hidden Single)
  35. W-Wing: 9/2 in r8c9,r9c3 connected by 2 in r7c39 => r9c7<>9
  36. Row 5 / Column 7 → 9 (Hidden Single)
  37. Row 5 / Column 9 → 7 (Full House)
  38. Row 1 / Column 7 → 7 (Hidden Single)
  39. Remote Pair: 2/3 r3c5 -3- r3c1 -2- r1c1 -3- r1c9 -2- r2c8 -3- r4c8 -2- r4c7 -3- r9c7 => r9c5<>2, r9c5<>3
  40. Row 9 / Column 5 → 9 (Naked Single)
  41. Row 7 / Column 6 → 3 (Naked Single)
  42. Row 8 / Column 4 → 2 (Full House)
  43. Row 6 / Column 6 → 9 (Full House)
  44. Row 8 / Column 9 → 9 (Full House)
  45. Row 6 / Column 4 → 3 (Full House)
  46. Row 2 / Column 4 → 9 (Full House)
  47. Row 9 / Column 3 → 2 (Naked Single)
  48. Row 7 / Column 3 → 9 (Full House)
  49. Row 7 / Column 9 → 2 (Full House)
  50. Row 9 / Column 7 → 3 (Full House)
  51. Row 1 / Column 9 → 3 (Full House)
  52. Row 4 / Column 7 → 2 (Full House)
  53. Row 1 / Column 1 → 2 (Full House)
  54. Row 2 / Column 8 → 2 (Full House)
  55. Row 4 / Column 8 → 3 (Full House)
  56. Row 3 / Column 1 → 3 (Full House)
  57. Row 2 / Column 5 → 3 (Full House)
  58. Row 3 / Column 5 → 2 (Full House)
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