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

This Sudoku Puzzle has 58 steps and it is solved using Naked Single, Hidden Single, Full House, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Naked Pair, undefined techniques.

Try To Solve This Puzzle

Solution Steps:

  1. Row 6 / Column 6 → 4 (Naked Single)
  2. Row 4 / Column 6 → 2 (Naked Single)
  3. Row 5 / Column 4 → 7 (Hidden Single)
  4. Row 6 / Column 8 → 5 (Hidden Single)
  5. Row 2 / Column 8 → 7 (Hidden Single)
  6. Row 1 / Column 2 → 7 (Hidden Single)
  7. Row 8 / Column 7 → 1 (Hidden Single)
  8. Row 4 / Column 7 → 6 (Hidden Single)
  9. Row 5 / Column 9 → 3 (Hidden Single)
  10. Row 5 / Column 7 → 4 (Naked Single)
  11. Row 4 / Column 8 → 9 (Full House)
  12. Row 4 / Column 4 → 1 (Naked Single)
  13. Row 4 / Column 1 → 4 (Full House)
  14. Row 6 / Column 5 → 9 (Full House)
  15. Row 6 / Column 2 → 8 (Naked Single)
  16. Row 6 / Column 3 → 3 (Naked Single)
  17. Row 6 / Column 1 → 1 (Full House)
  18. Row 3 / Column 5 → 7 (Hidden Single)
  19. Row 8 / Column 6 → 7 (Hidden Single)
  20. Row 1 / Column 1 → 9 (Hidden Single)
  21. Row 5 / Column 1 → 2 (Naked Single)
  22. Row 5 / Column 3 → 9 (Full House)
  23. Row 9 / Column 7 → 3 (Hidden Single)
  24. Row 9 / Column 6 → 8 (Naked Single)
  25. Row 7 / Column 5 → 1 (Hidden Single)
  26. Locked Candidates Type 1 (Pointing): 4 in b1 => r789c3<>4
  27. Locked Candidates Type 2 (Claiming): 6 in r3 => r2c3<>6
  28. Locked Candidates Type 2 (Claiming): 4 in r9 => r78c4,r8c5<>4
  29. Naked Pair: 3,6 in r7c16 => r7c3<>6, r7c4<>3
  30. W-Wing: 5/6 in r3c1,r8c5 connected by 6 in r7c16 => r8c1<>5
  31. Row 3 / Column 1 → 5 (Hidden Single)
  32. Row 2 / Column 3 → 4 (Naked Single)
  33. Row 3 / Column 3 → 6 (Full House)
  34. Row 3 / Column 7 → 8 (Naked Single)
  35. Row 1 / Column 7 → 5 (Full House)
  36. Row 3 / Column 4 → 4 (Full House)
  37. Row 2 / Column 9 → 6 (Naked Single)
  38. Row 1 / Column 9 → 4 (Full House)
  39. Row 1 / Column 5 → 6 (Naked Single)
  40. Row 1 / Column 6 → 3 (Naked Single)
  41. Row 1 / Column 4 → 8 (Full House)
  42. Row 7 / Column 6 → 6 (Full House)
  43. Row 8 / Column 5 → 5 (Naked Single)
  44. Row 7 / Column 1 → 3 (Naked Single)
  45. Row 8 / Column 1 → 6 (Full House)
  46. Row 2 / Column 5 → 2 (Naked Single)
  47. Row 2 / Column 4 → 5 (Full House)
  48. Row 9 / Column 5 → 4 (Full House)
  49. Row 8 / Column 3 → 8 (Naked Single)
  50. Row 9 / Column 4 → 2 (Naked Single)
  51. Row 9 / Column 3 → 5 (Full House)
  52. Row 7 / Column 3 → 2 (Full House)
  53. Row 8 / Column 8 → 4 (Naked Single)
  54. Row 7 / Column 8 → 8 (Full House)
  55. Row 7 / Column 4 → 9 (Naked Single)
  56. Row 7 / Column 2 → 4 (Full House)
  57. Row 8 / Column 2 → 9 (Full House)
  58. Row 8 / Column 4 → 3 (Full House)
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