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

This Sudoku Puzzle has 64 steps and it is solved using Naked Single, Hidden Single, Full House, Hidden Pair, undefined, Hidden Rectangle techniques.

Try To Solve This Puzzle

Solution Steps:

  1. Row 6 / Column 1 → 4 (Naked Single)
  2. Row 8 / Column 9 → 6 (Hidden Single)
  3. Row 9 / Column 2 → 2 (Hidden Single)
  4. Row 8 / Column 1 → 8 (Naked Single)
  5. Row 8 / Column 5 → 2 (Hidden Single)
  6. Row 2 / Column 9 → 9 (Hidden Single)
  7. Row 2 / Column 1 → 5 (Naked Single)
  8. Row 7 / Column 1 → 6 (Naked Single)
  9. Row 8 / Column 7 → 9 (Hidden Single)
  10. Row 1 / Column 3 → 2 (Hidden Single)
  11. Row 6 / Column 7 → 8 (Hidden Single)
  12. Row 7 / Column 2 → 5 (Hidden Single)
  13. Row 4 / Column 3 → 6 (Hidden Single)
  14. Row 6 / Column 2 → 1 (Hidden Single)
  15. Row 6 / Column 3 → 3 (Hidden Single)
  16. Row 6 / Column 5 → 5 (Naked Single)
  17. Row 6 / Column 9 → 7 (Full House)
  18. Row 5 / Column 9 → 4 (Naked Single)
  19. Row 9 / Column 9 → 1 (Naked Single)
  20. Row 4 / Column 9 → 5 (Full House)
  21. Row 2 / Column 3 → 7 (Hidden Single)
  22. Row 2 / Column 2 → 4 (Naked Single)
  23. Row 3 / Column 3 → 8 (Naked Single)
  24. Row 5 / Column 2 → 7 (Hidden Single)
  25. Row 1 / Column 7 → 7 (Hidden Single)
  26. Row 3 / Column 7 → 4 (Hidden Single)
  27. Hidden Pair: 5,6 in r13c4 => r1c4<>1, r1c4<>4, r13c4<>9, r3c4<>3
  28. X-Wing: 3 c57 r24 => r24c4,r4c8<>3
  29. Hidden Rectangle: 4/7 in r7c48,r8c48 => r7c4<>4
  30. XY-Chain: 4 4- r1c5 -9- r1c2 -6- r1c4 -5- r1c8 -1- r4c8 -2- r4c1 -9- r4c4 -4 => r4c5<>4
  31. Row 4 / Column 4 → 4 (Hidden Single)
  32. XY-Chain: 3 3- r5c8 -2- r4c8 -1- r4c7 -3- r2c7 -1- r2c4 -8- r9c4 -3 => r5c4<>3
  33. Row 9 / Column 4 → 3 (Hidden Single)
  34. XY-Wing: 3/9/8 in r24c5,r5c4 => r2c4<>8
  35. Row 2 / Column 4 → 1 (Naked Single)
  36. Row 2 / Column 7 → 3 (Naked Single)
  37. Row 2 / Column 5 → 8 (Full House)
  38. Row 4 / Column 7 → 1 (Full House)
  39. Row 8 / Column 4 → 7 (Naked Single)
  40. Row 3 / Column 8 → 5 (Naked Single)
  41. Row 1 / Column 8 → 1 (Full House)
  42. Row 4 / Column 8 → 2 (Naked Single)
  43. Row 5 / Column 8 → 3 (Full House)
  44. Row 8 / Column 8 → 4 (Naked Single)
  45. Row 8 / Column 3 → 1 (Full House)
  46. Row 7 / Column 3 → 4 (Full House)
  47. Row 3 / Column 4 → 6 (Naked Single)
  48. Row 4 / Column 1 → 9 (Naked Single)
  49. Row 4 / Column 5 → 3 (Full House)
  50. Row 5 / Column 1 → 2 (Full House)
  51. Row 9 / Column 8 → 8 (Naked Single)
  52. Row 7 / Column 8 → 7 (Full House)
  53. Row 9 / Column 6 → 4 (Full House)
  54. Row 7 / Column 5 → 9 (Naked Single)
  55. Row 1 / Column 5 → 4 (Full House)
  56. Row 1 / Column 4 → 5 (Naked Single)
  57. Row 3 / Column 2 → 9 (Naked Single)
  58. Row 1 / Column 2 → 6 (Full House)
  59. Row 1 / Column 6 → 9 (Full House)
  60. Row 3 / Column 6 → 3 (Full House)
  61. Row 7 / Column 4 → 8 (Naked Single)
  62. Row 5 / Column 4 → 9 (Full House)
  63. Row 5 / Column 6 → 8 (Full House)
  64. Row 7 / Column 6 → 1 (Full House)
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