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

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.

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

Solution Steps:

  1. Row 2 / Column 6 → 6 (Naked Single)
  2. Row 2 / Column 5 → 9 (Naked Single)
  3. Row 1 / Column 4 → 4 (Naked Single)
  4. Row 4 / Column 5 → 3 (Naked Single)
  5. Row 1 / Column 5 → 1 (Naked Single)
  6. Row 3 / Column 4 → 7 (Naked Single)
  7. Row 3 / Column 6 → 2 (Full House)
  8. Row 6 / Column 5 → 7 (Naked Single)
  9. Row 5 / Column 5 → 6 (Naked Single)
  10. Row 6 / Column 6 → 8 (Naked Single)
  11. Row 4 / Column 4 → 9 (Full House)
  12. Row 8 / Column 5 → 4 (Naked Single)
  13. Row 9 / Column 5 → 5 (Full House)
  14. Row 6 / Column 1 → 5 (Hidden Single)
  15. Row 1 / Column 3 → 2 (Hidden Single)
  16. Row 1 / Column 8 → 9 (Hidden Single)
  17. Locked Candidates Type 1 (Pointing): 3 in b6 => r5c123<>3
  18. 2-String Kite: 4 in r6c8,r7c1 (connected by r5c1,r6c3) => r7c8<>4
  19. Locked Candidates Type 2 (Claiming): 4 in c8 => r5c79<>4
  20. XY-Wing: 4/8/3 in r15c1,r6c3 => r3c3<>3
  21. XY-Wing: 3/4/8 in r1c7,r39c9 => r789c7<>8
  22. Turbot Fish: 8 r2c3 =8= r2c8 -8- r7c8 =8= r9c9 => r9c3<>8
  23. Empty Rectangle: 8 in b4 (r9c29) => r5c9<>8
  24. Hidden Rectangle: 2/8 in r4c29,r5c29 => r5c2<>8
  25. XY-Wing: 2/9/3 in r35c2,r5c9 => r3c9<>3
  26. Row 3 / Column 9 → 4 (Naked Single)
  27. Row 9 / Column 9 → 8 (Naked Single)
  28. Row 4 / Column 9 → 2 (Naked Single)
  29. Row 5 / Column 9 → 3 (Full House)
  30. Row 5 / Column 2 → 2 (Hidden Single)
  31. Row 5 / Column 3 → 9 (Hidden Single)
  32. Row 3 / Column 3 → 5 (Naked Single)
  33. Row 2 / Column 3 → 8 (Naked Single)
  34. Row 2 / Column 8 → 5 (Full House)
  35. Row 3 / Column 7 → 3 (Naked Single)
  36. Row 1 / Column 7 → 8 (Full House)
  37. Row 1 / Column 1 → 3 (Full House)
  38. Row 3 / Column 2 → 9 (Full House)
  39. Row 5 / Column 7 → 7 (Naked Single)
  40. Row 8 / Column 7 → 6 (Naked Single)
  41. Row 8 / Column 4 → 8 (Naked Single)
  42. Row 7 / Column 4 → 6 (Full House)
  43. Row 8 / Column 2 → 7 (Full House)
  44. Row 9 / Column 7 → 4 (Naked Single)
  45. Row 9 / Column 2 → 3 (Naked Single)
  46. Row 7 / Column 7 → 1 (Naked Single)
  47. Row 4 / Column 7 → 5 (Full House)
  48. Row 7 / Column 8 → 7 (Full House)
  49. Row 6 / Column 2 → 1 (Naked Single)
  50. Row 4 / Column 2 → 8 (Full House)
  51. Row 4 / Column 8 → 1 (Full House)
  52. Row 7 / Column 3 → 4 (Naked Single)
  53. Row 9 / Column 3 → 6 (Naked Single)
  54. Row 9 / Column 6 → 7 (Full House)
  55. Row 7 / Column 6 → 3 (Full House)
  56. Row 6 / Column 3 → 3 (Full House)
  57. Row 6 / Column 8 → 4 (Full House)
  58. Row 5 / Column 1 → 4 (Full House)
  59. Row 7 / Column 1 → 8 (Full House)
  60. Row 5 / Column 8 → 8 (Full House)
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