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

This Sudoku Puzzle has 57 steps and it is solved using Hidden Single, Locked Pair, Locked Candidates Type 1 (Pointing), Naked Pair, Naked Single, Full House techniques.

Try To Solve This Puzzle

Solution Steps:

  1. Row 3 / Column 4 → 6 (Hidden Single)
  2. Row 9 / Column 5 → 6 (Hidden Single)
  3. Row 8 / Column 8 → 9 (Hidden Single)
  4. Row 7 / Column 3 → 6 (Hidden Single)
  5. Row 2 / Column 4 → 9 (Hidden Single)
  6. Row 3 / Column 7 → 9 (Hidden Single)
  7. Locked Pair: 5,7 in r78c9 => r13c9,r7c7<>5, r1c9,r7c8<>7
  8. Row 1 / Column 8 → 7 (Hidden Single)
  9. Locked Candidates Type 1 (Pointing): 8 in b1 => r3c6<>8
  10. Locked Candidates Type 1 (Pointing): 1 in b5 => r5c2<>1
  11. Locked Candidates Type 1 (Pointing): 8 in b5 => r5c1<>8
  12. Locked Candidates Type 1 (Pointing): 1 in b9 => r7c246<>1
  13. Locked Candidates Type 1 (Pointing): 2 in b9 => r7c1246<>2
  14. Locked Candidates Type 1 (Pointing): 2 in b7 => r9c46<>2
  15. Naked Pair: 3,5 in r57c2 => r23c2<>3, r239c2<>5
  16. Locked Pair: 2,4 in r23c2 => r23c1,r9c2<>2
  17. Row 9 / Column 1 → 2 (Hidden Single)
  18. Row 7 / Column 1 → 7 (Hidden Single)
  19. Row 7 / Column 9 → 5 (Naked Single)
  20. Row 7 / Column 2 → 3 (Naked Single)
  21. Row 8 / Column 9 → 7 (Naked Single)
  22. Row 5 / Column 2 → 5 (Naked Single)
  23. Row 5 / Column 1 → 3 (Naked Single)
  24. Row 2 / Column 1 → 5 (Naked Single)
  25. Row 3 / Column 1 → 8 (Naked Single)
  26. Row 4 / Column 1 → 9 (Full House)
  27. Row 3 / Column 3 → 3 (Naked Single)
  28. Row 4 / Column 2 → 1 (Naked Single)
  29. Row 4 / Column 3 → 8 (Full House)
  30. Row 3 / Column 9 → 4 (Naked Single)
  31. Row 1 / Column 9 → 3 (Full House)
  32. Row 9 / Column 2 → 9 (Naked Single)
  33. Row 3 / Column 2 → 2 (Naked Single)
  34. Row 2 / Column 2 → 4 (Full House)
  35. Row 3 / Column 8 → 1 (Naked Single)
  36. Row 3 / Column 6 → 5 (Full House)
  37. Row 7 / Column 8 → 2 (Full House)
  38. Row 7 / Column 7 → 1 (Full House)
  39. Row 2 / Column 7 → 2 (Naked Single)
  40. Row 1 / Column 7 → 5 (Full House)
  41. Row 1 / Column 5 → 8 (Naked Single)
  42. Row 5 / Column 5 → 1 (Naked Single)
  43. Row 2 / Column 5 → 3 (Naked Single)
  44. Row 2 / Column 6 → 1 (Full House)
  45. Row 8 / Column 5 → 5 (Full House)
  46. Row 9 / Column 6 → 7 (Naked Single)
  47. Row 8 / Column 3 → 1 (Naked Single)
  48. Row 9 / Column 3 → 5 (Full House)
  49. Row 9 / Column 4 → 1 (Full House)
  50. Row 5 / Column 6 → 8 (Naked Single)
  51. Row 5 / Column 4 → 7 (Full House)
  52. Row 8 / Column 4 → 2 (Naked Single)
  53. Row 8 / Column 6 → 3 (Full House)
  54. Row 7 / Column 6 → 4 (Naked Single)
  55. Row 1 / Column 6 → 2 (Full House)
  56. Row 1 / Column 4 → 4 (Full House)
  57. Row 7 / Column 4 → 8 (Full House)
Show More...