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

This Sudoku Puzzle has 51 steps and it is solved using Locked Candidates Type 1 (Pointing), Naked Triple, undefined, Naked Pair, Naked Single, Full House techniques.

Try To Solve This Puzzle

Solution Steps:

  1. Locked Candidates Type 1 (Pointing): 3 in b9 => r7c45<>3
  2. Naked Triple: 3,4,9 in r4c5,r5c46 => r4c6<>3, r4c6,r6c4<>4
  3. X-Wing: 1 r17 c24 => r2c4<>1
  4. Naked Triple: 2,4,6 in r268c4 => r157c4<>4
  5. X-Wing: 2 r34 c68 => r2c6,r6c8<>2
  6. X-Wing: 6 c47 r68 => r6c8,r8c6<>6
  7. Naked Pair: 4,7 in r6c28 => r6c7<>4, r6c7<>7
  8. Naked Triple: 3,4,7 in r167c8 => r3c8<>3, r3c8<>7, r4c8<>4
  9. Locked Candidates Type 1 (Pointing): 3 in b3 => r1c45<>3
  10. Row 1 / Column 4 → 1 (Naked Single)
  11. Row 7 / Column 4 → 9 (Naked Single)
  12. Row 5 / Column 4 → 3 (Naked Single)
  13. Row 5 / Column 6 → 4 (Naked Single)
  14. Row 2 / Column 6 → 7 (Naked Single)
  15. Row 4 / Column 5 → 9 (Naked Single)
  16. Row 8 / Column 6 → 7 (Naked Single)
  17. Row 7 / Column 5 → 4 (Naked Single)
  18. Row 1 / Column 5 → 5 (Naked Single)
  19. Row 9 / Column 5 → 3 (Full House)
  20. Row 3 / Column 5 → 3 (Full House)
  21. Row 7 / Column 2 → 1 (Naked Single)
  22. Row 9 / Column 3 → 4 (Full House)
  23. Row 8 / Column 4 → 6 (Naked Single)
  24. Row 1 / Column 2 → 7 (Naked Single)
  25. Row 3 / Column 6 → 2 (Naked Single)
  26. Row 9 / Column 9 → 6 (Naked Single)
  27. Row 9 / Column 6 → 1 (Full House)
  28. Row 6 / Column 4 → 2 (Naked Single)
  29. Row 2 / Column 4 → 4 (Full House)
  30. Row 4 / Column 6 → 6 (Full House)
  31. Row 8 / Column 7 → 4 (Naked Single)
  32. Row 3 / Column 3 → 5 (Naked Single)
  33. Row 2 / Column 3 → 1 (Full House)
  34. Row 6 / Column 2 → 4 (Naked Single)
  35. Row 4 / Column 2 → 5 (Full House)
  36. Row 3 / Column 8 → 6 (Naked Single)
  37. Row 6 / Column 7 → 6 (Naked Single)
  38. Row 6 / Column 8 → 7 (Full House)
  39. Row 2 / Column 9 → 5 (Naked Single)
  40. Row 2 / Column 7 → 2 (Full House)
  41. Row 4 / Column 8 → 2 (Naked Single)
  42. Row 1 / Column 7 → 3 (Naked Single)
  43. Row 1 / Column 8 → 4 (Full House)
  44. Row 3 / Column 9 → 7 (Full House)
  45. Row 7 / Column 8 → 3 (Full House)
  46. Row 7 / Column 7 → 7 (Full House)
  47. Row 5 / Column 7 → 5 (Full House)
  48. Row 4 / Column 3 → 3 (Naked Single)
  49. Row 5 / Column 3 → 7 (Full House)
  50. Row 4 / Column 9 → 4 (Full House)
  51. Row 5 / Column 9 → 9 (Full House)
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