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

This Sudoku Puzzle has 58 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Naked Pair, Naked Triple, Remote Pair, Naked Single, Full House techniques.

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

Solution Steps:

  1. Row 6 / Column 5 → 6 (Hidden Single)
  2. Row 2 / Column 2 → 2 (Hidden Single)
  3. Row 3 / Column 5 → 2 (Hidden Single)
  4. Row 3 / Column 4 → 5 (Hidden Single)
  5. Row 6 / Column 2 → 5 (Hidden Single)
  6. Row 4 / Column 2 → 3 (Hidden Single)
  7. Row 6 / Column 8 → 3 (Hidden Single)
  8. Locked Candidates Type 1 (Pointing): 4 in b2 => r2c7<>4
  9. Locked Candidates Type 1 (Pointing): 9 in b2 => r2c17<>9
  10. Locked Candidates Type 1 (Pointing): 4 in b6 => r5c5<>4
  11. Naked Pair: 7,9 in r5c5,r6c4 => r4c45<>7, r4c456<>9
  12. Naked Pair: 7,9 in r4c8,r6c7 => r5c79<>7, r5c79<>9
  13. Naked Triple: 3,7,9 in r79c9,r8c8 => r79c7<>3, r789c7<>7, r789c7<>9
  14. Locked Candidates Type 1 (Pointing): 3 in b9 => r1c9<>3
  15. Remote Pair: 7/9 r6c4 -9- r6c7 -7- r4c8 -9- r8c8 => r8c4<>7, r8c4<>9
  16. Row 8 / Column 4 → 8 (Naked Single)
  17. Row 4 / Column 4 → 4 (Naked Single)
  18. Row 2 / Column 4 → 9 (Naked Single)
  19. Row 2 / Column 6 → 4 (Full House)
  20. Row 6 / Column 4 → 7 (Full House)
  21. Row 6 / Column 7 → 9 (Full House)
  22. Row 4 / Column 5 → 5 (Naked Single)
  23. Row 5 / Column 5 → 9 (Naked Single)
  24. Row 4 / Column 6 → 8 (Full House)
  25. Row 4 / Column 8 → 7 (Naked Single)
  26. Row 4 / Column 3 → 9 (Full House)
  27. Row 8 / Column 8 → 9 (Full House)
  28. Row 9 / Column 5 → 7 (Naked Single)
  29. Row 7 / Column 5 → 4 (Full House)
  30. Row 8 / Column 6 → 5 (Naked Single)
  31. Row 7 / Column 6 → 9 (Full House)
  32. Row 9 / Column 9 → 3 (Naked Single)
  33. Row 7 / Column 9 → 7 (Naked Single)
  34. Row 9 / Column 3 → 5 (Naked Single)
  35. Row 7 / Column 1 → 3 (Naked Single)
  36. Row 9 / Column 7 → 1 (Naked Single)
  37. Row 9 / Column 1 → 9 (Full House)
  38. Row 2 / Column 1 → 7 (Naked Single)
  39. Row 2 / Column 7 → 3 (Full House)
  40. Row 7 / Column 3 → 2 (Naked Single)
  41. Row 7 / Column 7 → 5 (Full House)
  42. Row 8 / Column 7 → 2 (Full House)
  43. Row 1 / Column 1 → 5 (Naked Single)
  44. Row 3 / Column 1 → 6 (Naked Single)
  45. Row 5 / Column 1 → 1 (Full House)
  46. Row 3 / Column 2 → 9 (Naked Single)
  47. Row 1 / Column 7 → 8 (Naked Single)
  48. Row 8 / Column 3 → 7 (Naked Single)
  49. Row 8 / Column 2 → 1 (Full House)
  50. Row 5 / Column 2 → 7 (Full House)
  51. Row 5 / Column 3 → 6 (Full House)
  52. Row 3 / Column 3 → 8 (Naked Single)
  53. Row 1 / Column 3 → 3 (Full House)
  54. Row 1 / Column 9 → 9 (Full House)
  55. Row 3 / Column 9 → 4 (Naked Single)
  56. Row 3 / Column 7 → 7 (Full House)
  57. Row 5 / Column 7 → 4 (Full House)
  58. Row 5 / Column 9 → 8 (Full House)
Show More...