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

This Sudoku Puzzle has 64 steps and it is solved using Hidden Single, Locked Pair, Naked Single, Locked Triple, Full House, Locked Candidates Type 2 (Claiming) techniques.

Try To Solve This Puzzle

Solution Steps:

  1. Row 4 / Column 8 → 8 (Hidden Single)
  2. Row 3 / Column 2 → 1 (Hidden Single)
  3. Row 9 / Column 9 → 8 (Hidden Single)
  4. Row 9 / Column 8 → 1 (Hidden Single)
  5. Row 2 / Column 9 → 3 (Hidden Single)
  6. Locked Pair: 4,9 in r8c13 => r79c2,r8c789<>4, r9c2<>9
  7. Row 7 / Column 2 → 3 (Naked Single)
  8. Row 9 / Column 2 → 3 (Naked Single)
  9. Locked Triple: 4,5,6 in r7c456 => r7c7,r9c456<>4, r7c7<>5, r7c7<>6
  10. Row 7 / Column 7 → 6 (Naked Single)
  11. Row 7 / Column 4 → 4 (Naked Single)
  12. Row 8 / Column 9 → 5 (Naked Single)
  13. Row 7 / Column 5 → 5 (Naked Single)
  14. Row 7 / Column 6 → 5 (Naked Single)
  15. Row 8 / Column 7 → 2 (Naked Single)
  16. Row 8 / Column 8 → 2 (Naked Single)
  17. Row 9 / Column 7 → 4 (Naked Single)
  18. Row 3 / Column 8 → 5 (Hidden Single)
  19. Locked Pair: 7,9 in r12c7 => r3c9,r456c7<>7, r1c8,r456c7<>9
  20. Row 4 / Column 7 → 1 (Naked Single)
  21. Row 6 / Column 7 → 5 (Naked Single)
  22. Row 1 / Column 8 → 4 (Naked Single)
  23. Row 3 / Column 9 → 4 (Naked Single)
  24. Row 5 / Column 7 → 5 (Naked Single)
  25. Row 6 / Column 8 → 9 (Naked Single)
  26. Row 5 / Column 3 → 1 (Hidden Single)
  27. Row 2 / Column 6 → 4 (Hidden Single)
  28. Row 5 / Column 1 → 4 (Hidden Single)
  29. Row 6 / Column 3 → 7 (Naked Single)
  30. Row 8 / Column 1 → 9 (Naked Single)
  31. Row 4 / Column 3 → 9 (Naked Single)
  32. Row 6 / Column 9 → 6 (Naked Single)
  33. Row 8 / Column 3 → 4 (Naked Single)
  34. Row 4 / Column 2 → 6 (Naked Single)
  35. Row 5 / Column 9 → 7 (Naked Single)
  36. Row 6 / Column 2 → 2 (Naked Single)
  37. Row 4 / Column 1 → 3 (Full House)
  38. Row 6 / Column 1 → 3 (Full House)
  39. Row 4 / Column 6 → 7 (Naked Single)
  40. Row 4 / Column 5 → 4 (Full House)
  41. Row 6 / Column 5 → 4 (Naked Single)
  42. Row 1 / Column 6 → 3 (Hidden Single)
  43. Locked Candidates Type 2 (Claiming): 5 in r1 => r2c23<>5
  44. Row 2 / Column 2 → 9 (Naked Single)
  45. Row 2 / Column 3 → 8 (Naked Single)
  46. Row 1 / Column 3 → 5 (Full House)
  47. Row 1 / Column 2 → 5 (Naked Single)
  48. Row 2 / Column 7 → 7 (Naked Single)
  49. Row 2 / Column 1 → 2 (Full House)
  50. Row 2 / Column 4 → 2 (Full House)
  51. Row 1 / Column 7 → 9 (Naked Single)
  52. Row 1 / Column 4 → 8 (Hidden Single)
  53. Row 9 / Column 6 → 2 (Hidden Single)
  54. Locked Triple: 6,7,9 in r3c456 => r1c5,r3c1<>6, r1c5,r3c1<>7
  55. Row 3 / Column 1 → 7 (Naked Single)
  56. Row 1 / Column 5 → 7 (Naked Single)
  57. Row 1 / Column 1 → 6 (Naked Single)
  58. Row 9 / Column 5 → 9 (Naked Single)
  59. Row 3 / Column 5 → 6 (Naked Single)
  60. Row 9 / Column 4 → 7 (Naked Single)
  61. Row 3 / Column 4 → 9 (Naked Single)
  62. Row 3 / Column 6 → 9 (Naked Single)
  63. Row 5 / Column 4 → 6 (Naked Single)
  64. Row 5 / Column 6 → 6 (Naked Single)
Show More...