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

This Sudoku Puzzle has 56 steps and it is solved using Naked Single, Hidden Single, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Naked Triple, undefined, Full House techniques.

Try To Solve This Puzzle

Solution Steps:

  1. Row 5 / Column 3 → 9 (Naked Single)
  2. Row 9 / Column 8 → 1 (Hidden Single)
  3. Row 7 / Column 8 → 5 (Hidden Single)
  4. Locked Candidates Type 1 (Pointing): 8 in b6 => r79c7<>8
  5. Locked Candidates Type 1 (Pointing): 9 in b7 => r2c1<>9
  6. Locked Candidates Type 1 (Pointing): 2 in b8 => r1c4<>2
  7. Locked Candidates Type 1 (Pointing): 4 in b8 => r146c4<>4
  8. Locked Candidates Type 2 (Claiming): 4 in c8 => r4c9,r6c7<>4
  9. Locked Candidates Type 2 (Claiming): 9 in c8 => r4c9,r6c7<>9
  10. Naked Triple: 1,2,8 in r367c2 => r12c2<>1, r1c2<>2, r2c2<>8
  11. Locked Candidates Type 1 (Pointing): 8 in b1 => r3c6<>8
  12. W-Wing: 5/1 in r1c4,r2c1 connected by 1 in r12c7 => r1c3,r2c56<>5
  13. Row 2 / Column 1 → 5 (Hidden Single)
  14. W-Wing: 2/1 in r3c1,r4c3 connected by 1 in r8c13 => r13c3<>2
  15. Row 1 / Column 6 → 2 (Hidden Single)
  16. Row 1 / Column 4 → 5 (Hidden Single)
  17. Row 6 / Column 6 → 5 (Hidden Single)
  18. Row 9 / Column 3 → 5 (Hidden Single)
  19. Row 8 / Column 5 → 5 (Hidden Single)
  20. Row 2 / Column 6 → 8 (Hidden Single)
  21. Row 2 / Column 5 → 4 (Naked Single)
  22. Row 3 / Column 6 → 1 (Full House)
  23. Row 6 / Column 5 → 8 (Full House)
  24. Row 4 / Column 6 → 4 (Full House)
  25. Row 3 / Column 1 → 2 (Naked Single)
  26. Row 5 / Column 4 → 7 (Naked Single)
  27. Row 5 / Column 7 → 8 (Full House)
  28. Row 6 / Column 7 → 2 (Naked Single)
  29. Row 4 / Column 8 → 9 (Naked Single)
  30. Row 6 / Column 8 → 4 (Full House)
  31. Row 4 / Column 9 → 7 (Full House)
  32. Row 3 / Column 2 → 8 (Naked Single)
  33. Row 3 / Column 3 → 4 (Full House)
  34. Row 9 / Column 1 → 9 (Naked Single)
  35. Row 8 / Column 1 → 1 (Full House)
  36. Row 6 / Column 2 → 1 (Naked Single)
  37. Row 4 / Column 3 → 2 (Full House)
  38. Row 4 / Column 4 → 1 (Full House)
  39. Row 6 / Column 4 → 9 (Full House)
  40. Row 7 / Column 2 → 2 (Naked Single)
  41. Row 8 / Column 3 → 8 (Full House)
  42. Row 1 / Column 3 → 1 (Full House)
  43. Row 9 / Column 7 → 4 (Naked Single)
  44. Row 8 / Column 4 → 2 (Naked Single)
  45. Row 8 / Column 9 → 9 (Full House)
  46. Row 1 / Column 7 → 9 (Naked Single)
  47. Row 7 / Column 7 → 7 (Naked Single)
  48. Row 2 / Column 7 → 1 (Full House)
  49. Row 7 / Column 9 → 8 (Naked Single)
  50. Row 7 / Column 4 → 4 (Full House)
  51. Row 9 / Column 4 → 8 (Full House)
  52. Row 9 / Column 9 → 2 (Full House)
  53. Row 2 / Column 9 → 6 (Naked Single)
  54. Row 1 / Column 9 → 4 (Full House)
  55. Row 1 / Column 2 → 6 (Full House)
  56. Row 2 / Column 2 → 9 (Full House)
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