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

This Sudoku Puzzle has 64 steps and it is solved using Naked Single, Hidden Single, Locked Candidates Type 1 (Pointing), Naked Pair, undefined, Hidden Rectangle, Full House techniques.

Try To Solve This Puzzle

Solution Steps:

  1. Row 6 / Column 1 → 1 (Naked Single)
  2. Row 9 / Column 1 → 2 (Naked Single)
  3. Row 7 / Column 1 → 6 (Naked Single)
  4. Row 4 / Column 6 → 8 (Hidden Single)
  5. Row 8 / Column 6 → 2 (Hidden Single)
  6. Row 9 / Column 5 → 5 (Hidden Single)
  7. Row 8 / Column 4 → 7 (Hidden Single)
  8. Row 9 / Column 7 → 8 (Hidden Single)
  9. Row 8 / Column 5 → 8 (Hidden Single)
  10. Row 2 / Column 8 → 8 (Hidden Single)
  11. Locked Candidates Type 1 (Pointing): 6 in b5 => r2c4<>6
  12. Row 2 / Column 7 → 6 (Hidden Single)
  13. Row 2 / Column 6 → 7 (Hidden Single)
  14. Naked Pair: 1,4 in r7c35 => r7c79<>1, r7c7<>4
  15. Locked Candidates Type 1 (Pointing): 4 in b9 => r8c23<>4
  16. Row 3 / Column 2 → 4 (Hidden Single)
  17. X-Wing: 3 r24 c24 => r8c2<>3
  18. Row 8 / Column 3 → 3 (Hidden Single)
  19. XYZ-Wing: 1/3/6 in r2c4,r3c35 => r3c6<>1
  20. Row 3 / Column 6 → 9 (Naked Single)
  21. Hidden Rectangle: 1/6 in r1c35,r3c35 => r1c5<>1
  22. XY-Chain: 1 1- r1c6 -4- r6c6 -5- r6c2 -9- r8c2 -1- r2c2 -3- r2c4 -1 => r3c5<>1
  23. XY-Wing: 1/6/3 in r2c2,r3c35 => r2c4,r3c1<>3
  24. Row 2 / Column 4 → 1 (Naked Single)
  25. Row 2 / Column 2 → 3 (Full House)
  26. Row 3 / Column 1 → 7 (Naked Single)
  27. Row 1 / Column 6 → 4 (Naked Single)
  28. Row 9 / Column 4 → 4 (Naked Single)
  29. Row 7 / Column 5 → 1 (Full House)
  30. Row 4 / Column 2 → 5 (Naked Single)
  31. Row 1 / Column 1 → 8 (Naked Single)
  32. Row 5 / Column 1 → 3 (Full House)
  33. Row 6 / Column 6 → 5 (Naked Single)
  34. Row 5 / Column 6 → 1 (Full House)
  35. Row 6 / Column 4 → 6 (Naked Single)
  36. Row 4 / Column 4 → 3 (Full House)
  37. Row 5 / Column 5 → 4 (Full House)
  38. Row 7 / Column 3 → 4 (Naked Single)
  39. Row 6 / Column 2 → 9 (Naked Single)
  40. Row 5 / Column 3 → 8 (Full House)
  41. Row 6 / Column 8 → 4 (Full House)
  42. Row 8 / Column 2 → 1 (Full House)
  43. Row 9 / Column 3 → 9 (Full House)
  44. Row 9 / Column 9 → 1 (Full House)
  45. Row 8 / Column 8 → 9 (Naked Single)
  46. Row 8 / Column 7 → 4 (Full House)
  47. Row 4 / Column 9 → 2 (Naked Single)
  48. Row 5 / Column 8 → 7 (Naked Single)
  49. Row 4 / Column 7 → 1 (Naked Single)
  50. Row 4 / Column 8 → 6 (Full House)
  51. Row 7 / Column 9 → 7 (Naked Single)
  52. Row 7 / Column 7 → 2 (Full House)
  53. Row 1 / Column 8 → 1 (Naked Single)
  54. Row 3 / Column 8 → 2 (Full House)
  55. Row 3 / Column 7 → 5 (Naked Single)
  56. Row 1 / Column 3 → 6 (Naked Single)
  57. Row 3 / Column 3 → 1 (Full House)
  58. Row 3 / Column 9 → 3 (Naked Single)
  59. Row 3 / Column 5 → 6 (Full House)
  60. Row 1 / Column 5 → 3 (Full House)
  61. Row 5 / Column 7 → 9 (Naked Single)
  62. Row 1 / Column 7 → 7 (Full House)
  63. Row 1 / Column 9 → 9 (Full House)
  64. Row 5 / Column 9 → 5 (Full House)
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