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

This Sudoku Puzzle has 60 steps and it is solved using Naked Single, Full House, Hidden Single, Locked Candidates Type 1 (Pointing), undefined, Locked Candidates Type 2 (Claiming), Turbot Fish, Empty Rectangle, Hidden Rectangle techniques.

Try To Solve This Puzzle

Solution Steps:

  1. Row 2 / Column 4 → 2 (Naked Single)
  2. Row 2 / Column 5 → 3 (Naked Single)
  3. Row 1 / Column 6 → 6 (Naked Single)
  4. Row 4 / Column 5 → 8 (Naked Single)
  5. Row 1 / Column 5 → 4 (Naked Single)
  6. Row 3 / Column 6 → 9 (Naked Single)
  7. Row 3 / Column 4 → 5 (Full House)
  8. Row 6 / Column 5 → 9 (Naked Single)
  9. Row 5 / Column 5 → 2 (Naked Single)
  10. Row 6 / Column 4 → 1 (Naked Single)
  11. Row 4 / Column 6 → 3 (Full House)
  12. Row 8 / Column 5 → 6 (Naked Single)
  13. Row 9 / Column 5 → 7 (Full House)
  14. Row 6 / Column 9 → 7 (Hidden Single)
  15. Row 1 / Column 7 → 5 (Hidden Single)
  16. Row 1 / Column 2 → 3 (Hidden Single)
  17. Locked Candidates Type 1 (Pointing): 8 in b4 => r5c789<>8
  18. 2-String Kite: 6 in r6c2,r7c9 (connected by r5c9,r6c7) => r7c2<>6
  19. Locked Candidates Type 2 (Claiming): 6 in c2 => r5c13<>6
  20. XY-Wing: 6/8/1 in r1c3,r39c1 => r789c3<>1
  21. Turbot Fish: 1 r2c7 =1= r2c2 -1- r7c2 =1= r9c1 => r9c7<>1
  22. Empty Rectangle: 1 in b6 (r9c18) => r5c1<>1
  23. XY-Wing: 1/6/8 in r15c9,r6c7 => r3c7<>8
  24. Hidden Rectangle: 1/5 in r4c18,r5c18 => r5c8<>1
  25. XY-Wing: 3/5/8 in r35c8,r5c1 => r3c1<>8
  26. Row 3 / Column 1 → 6 (Naked Single)
  27. Row 9 / Column 1 → 1 (Naked Single)
  28. Row 4 / Column 1 → 5 (Naked Single)
  29. Row 5 / Column 1 → 8 (Full House)
  30. Row 5 / Column 8 → 5 (Hidden Single)
  31. Row 5 / Column 7 → 3 (Hidden Single)
  32. Row 3 / Column 7 → 7 (Naked Single)
  33. Row 2 / Column 7 → 1 (Naked Single)
  34. Row 2 / Column 2 → 7 (Full House)
  35. Row 3 / Column 3 → 8 (Naked Single)
  36. Row 1 / Column 3 → 1 (Full House)
  37. Row 1 / Column 9 → 8 (Full House)
  38. Row 3 / Column 8 → 3 (Full House)
  39. Row 5 / Column 3 → 9 (Naked Single)
  40. Row 8 / Column 3 → 2 (Naked Single)
  41. Row 8 / Column 6 → 1 (Naked Single)
  42. Row 7 / Column 6 → 2 (Full House)
  43. Row 8 / Column 8 → 9 (Full House)
  44. Row 9 / Column 3 → 6 (Naked Single)
  45. Row 9 / Column 8 → 8 (Naked Single)
  46. Row 7 / Column 3 → 4 (Naked Single)
  47. Row 4 / Column 3 → 7 (Full House)
  48. Row 7 / Column 2 → 9 (Full House)
  49. Row 6 / Column 8 → 4 (Naked Single)
  50. Row 4 / Column 8 → 1 (Full House)
  51. Row 4 / Column 2 → 4 (Full House)
  52. Row 7 / Column 7 → 6 (Naked Single)
  53. Row 9 / Column 4 → 9 (Naked Single)
  54. Row 9 / Column 7 → 2 (Full House)
  55. Row 7 / Column 4 → 8 (Full House)
  56. Row 6 / Column 7 → 8 (Full House)
  57. Row 6 / Column 2 → 6 (Full House)
  58. Row 5 / Column 9 → 6 (Full House)
  59. Row 7 / Column 9 → 1 (Full House)
  60. Row 5 / Column 2 → 1 (Full House)
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