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

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

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

Solution Steps:

  1. Row 5 / Column 1 → 6 (Naked Single)
  2. Row 5 / Column 2 → 4 (Hidden Single)
  3. Row 8 / Column 5 → 4 (Hidden Single)
  4. Row 2 / Column 3 → 4 (Hidden Single)
  5. Row 9 / Column 8 → 1 (Hidden Single)
  6. Row 3 / Column 7 → 1 (Hidden Single)
  7. Row 3 / Column 4 → 4 (Hidden Single)
  8. Row 3 / Column 2 → 6 (Hidden Single)
  9. Row 1 / Column 6 → 1 (Hidden Single)
  10. Row 7 / Column 8 → 6 (Hidden Single)
  11. Row 1 / Column 2 → 5 (Hidden Single)
  12. Row 1 / Column 4 → 8 (Hidden Single)
  13. Row 9 / Column 6 → 8 (Hidden Single)
  14. Row 8 / Column 3 → 6 (Hidden Single)
  15. Row 9 / Column 4 → 6 (Hidden Single)
  16. Row 6 / Column 6 → 6 (Hidden Single)
  17. Row 2 / Column 5 → 6 (Hidden Single)
  18. Row 4 / Column 9 → 6 (Hidden Single)
  19. Row 2 / Column 9 → 5 (Hidden Single)
  20. Locked Candidates Type 1 (Pointing): 2 in b4 => r7c3<>2
  21. Locked Candidates Type 1 (Pointing): 3 in b9 => r8c1<>3
  22. Locked Candidates Type 1 (Pointing): 7 in b9 => r3c9<>7
  23. Locked Candidates Type 2 (Claiming): 7 in c2 => r7c13,r8c1<>7
  24. Row 8 / Column 1 → 5 (Naked Single)
  25. 2-String Kite: 2 in r2c4,r5c8 (connected by r2c7,r3c8) => r5c4<>2
  26. W-Wing: 9/2 in r2c7,r6c9 connected by 2 in r35c8 => r3c9,r6c7<>9
  27. Row 3 / Column 1 → 9 (Hidden Single)
  28. Row 2 / Column 1 → 7 (Naked Single)
  29. Row 1 / Column 3 → 3 (Full House)
  30. Row 1 / Column 8 → 7 (Full House)
  31. Row 2 / Column 4 → 2 (Naked Single)
  32. Row 2 / Column 7 → 9 (Full House)
  33. Row 7 / Column 3 → 1 (Naked Single)
  34. Row 7 / Column 1 → 3 (Naked Single)
  35. Row 6 / Column 9 → 9 (Hidden Single)
  36. XY-Wing: 2/7/9 in r58c6,r7c4 => r5c4,r7c6<>9
  37. Row 5 / Column 4 → 3 (Naked Single)
  38. Row 4 / Column 4 → 7 (Naked Single)
  39. Row 7 / Column 4 → 9 (Full House)
  40. Row 5 / Column 8 → 2 (Naked Single)
  41. Row 3 / Column 8 → 3 (Full House)
  42. Row 5 / Column 6 → 9 (Full House)
  43. Row 3 / Column 9 → 2 (Full House)
  44. Row 4 / Column 3 → 2 (Naked Single)
  45. Row 6 / Column 3 → 7 (Full House)
  46. Row 6 / Column 7 → 8 (Naked Single)
  47. Row 4 / Column 7 → 3 (Full House)
  48. Row 8 / Column 7 → 2 (Full House)
  49. Row 9 / Column 9 → 7 (Naked Single)
  50. Row 8 / Column 9 → 3 (Full House)
  51. Row 8 / Column 6 → 7 (Full House)
  52. Row 9 / Column 2 → 2 (Full House)
  53. Row 7 / Column 2 → 7 (Full House)
  54. Row 4 / Column 5 → 1 (Naked Single)
  55. Row 4 / Column 1 → 8 (Full House)
  56. Row 6 / Column 1 → 1 (Full House)
  57. Row 6 / Column 5 → 2 (Full House)
  58. Row 3 / Column 6 → 5 (Naked Single)
  59. Row 3 / Column 5 → 7 (Full House)
  60. Row 7 / Column 5 → 5 (Full House)
  61. Row 7 / Column 6 → 2 (Full House)
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