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

This Sudoku Puzzle has 61 steps and it is solved using Naked Single, Hidden Single, Full House, undefined, Hidden Rectangle, Discontinuous Nice Loop techniques.

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

Solution Steps:

  1. Row 4 / Column 3 → 7 (Naked Single)
  2. Row 4 / Column 2 → 9 (Naked Single)
  3. Row 5 / Column 1 → 3 (Hidden Single)
  4. Row 8 / Column 2 → 8 (Hidden Single)
  5. Row 7 / Column 7 → 8 (Hidden Single)
  6. Row 7 / Column 3 → 6 (Hidden Single)
  7. Row 1 / Column 3 → 8 (Hidden Single)
  8. Row 8 / Column 1 → 5 (Hidden Single)
  9. Row 9 / Column 2 → 7 (Hidden Single)
  10. Row 8 / Column 8 → 2 (Hidden Single)
  11. Row 8 / Column 9 → 6 (Hidden Single)
  12. Row 9 / Column 9 → 3 (Hidden Single)
  13. Row 9 / Column 7 → 1 (Naked Single)
  14. Row 7 / Column 8 → 7 (Naked Single)
  15. Row 7 / Column 9 → 9 (Full House)
  16. Row 6 / Column 8 → 4 (Naked Single)
  17. Row 9 / Column 5 → 9 (Hidden Single)
  18. Row 7 / Column 1 → 1 (Hidden Single)
  19. Row 7 / Column 5 → 4 (Full House)
  20. 2-String Kite: 5 in r3c3,r6c7 (connected by r5c3,r6c2) => r3c7<>5
  21. Hidden Rectangle: 1/8 in r2c56,r5c56 => r2c5<>1
  22. Hidden Rectangle: 5/7 in r1c79,r5c79 => r1c9<>5
  23. Discontinuous Nice Loop: 1/2/3 r3c5 =6= r3c7 -6- r4c7 =6= r4c8 =1= r5c9 -1- r5c6 -8- r5c5 =8= r2c5 =6= r3c5 => r3c5<>1, r3c5<>2, r3c5<>3
  24. Row 3 / Column 5 → 6 (Naked Single)
  25. Row 3 / Column 7 → 2 (Naked Single)
  26. Row 3 / Column 4 → 3 (Hidden Single)
  27. Row 2 / Column 8 → 6 (Hidden Single)
  28. Row 4 / Column 8 → 1 (Full House)
  29. Row 4 / Column 4 → 4 (Naked Single)
  30. Row 4 / Column 6 → 3 (Naked Single)
  31. Row 4 / Column 7 → 6 (Full House)
  32. Row 6 / Column 6 → 9 (Naked Single)
  33. Row 8 / Column 6 → 1 (Naked Single)
  34. Row 5 / Column 6 → 8 (Naked Single)
  35. Row 8 / Column 4 → 7 (Naked Single)
  36. Row 8 / Column 5 → 3 (Full House)
  37. Row 6 / Column 4 → 2 (Naked Single)
  38. Row 2 / Column 4 → 1 (Naked Single)
  39. Row 1 / Column 4 → 9 (Full House)
  40. Row 6 / Column 2 → 5 (Naked Single)
  41. Row 5 / Column 3 → 2 (Full House)
  42. Row 6 / Column 5 → 7 (Naked Single)
  43. Row 5 / Column 5 → 1 (Full House)
  44. Row 6 / Column 7 → 3 (Full House)
  45. Row 1 / Column 5 → 2 (Naked Single)
  46. Row 2 / Column 5 → 8 (Full House)
  47. Row 2 / Column 2 → 2 (Naked Single)
  48. Row 3 / Column 2 → 1 (Full House)
  49. Row 9 / Column 3 → 4 (Naked Single)
  50. Row 3 / Column 3 → 5 (Full House)
  51. Row 9 / Column 1 → 2 (Full House)
  52. Row 1 / Column 1 → 4 (Naked Single)
  53. Row 3 / Column 1 → 9 (Full House)
  54. Row 3 / Column 9 → 4 (Full House)
  55. Row 1 / Column 6 → 5 (Naked Single)
  56. Row 2 / Column 6 → 4 (Full House)
  57. Row 2 / Column 9 → 5 (Full House)
  58. Row 1 / Column 7 → 7 (Naked Single)
  59. Row 1 / Column 9 → 1 (Full House)
  60. Row 5 / Column 9 → 7 (Full House)
  61. Row 5 / Column 7 → 5 (Full House)
Show More...