Solution for Evil Sudoku #1259713524895

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

This Sudoku Puzzle has 58 steps and it is solved using Hidden Single, Naked Single, Full House, Locked Candidates Type 1 (Pointing), Naked Pair, Hidden Pair, Give Up techniques.

Try To Solve This Puzzle

Solution Steps:

  1. Row 5 / Column 1 → 1 (Hidden Single)
  2. Row 9 / Column 2 → 5 (Hidden Single)
  3. Row 7 / Column 1 → 4 (Hidden Single)
  4. Row 2 / Column 3 → 5 (Hidden Single)
  5. Row 2 / Column 2 → 3 (Hidden Single)
  6. Row 2 / Column 4 → 7 (Hidden Single)
  7. Row 1 / Column 6 → 6 (Naked Single)
  8. Row 1 / Column 3 → 7 (Hidden Single)
  9. Row 8 / Column 6 → 7 (Hidden Single)
  10. Row 9 / Column 9 → 7 (Hidden Single)
  11. Row 1 / Column 9 → 4 (Hidden Single)
  12. Row 5 / Column 8 → 7 (Hidden Single)
  13. Row 3 / Column 9 → 8 (Hidden Single)
  14. Row 1 / Column 5 → 8 (Hidden Single)
  15. Row 9 / Column 4 → 8 (Hidden Single)
  16. Row 1 / Column 8 → 2 (Hidden Single)
  17. Row 1 / Column 1 → 9 (Full House)
  18. Row 7 / Column 4 → 2 (Hidden Single)
  19. Row 8 / Column 2 → 9 (Hidden Single)
  20. Row 5 / Column 9 → 2 (Hidden Single)
  21. Row 6 / Column 2 → 2 (Hidden Single)
  22. Row 4 / Column 2 → 8 (Hidden Single)
  23. Locked Candidates Type 1 (Pointing): 3 in b4 => r8c3<>3
  24. Locked Candidates Type 1 (Pointing): 6 in b8 => r5c5<>6
  25. Naked Pair: 6,9 in r4c48 => r4c3<>6
  26. Locked Candidates Type 1 (Pointing): 6 in b4 => r5c7<>6
  27. Naked Pair: 6,8 in r68c8 => r247c8<>6
  28. Row 4 / Column 8 → 9 (Naked Single)
  29. Row 2 / Column 8 → 1 (Naked Single)
  30. Row 4 / Column 4 → 6 (Naked Single)
  31. Row 5 / Column 7 → 4 (Naked Single)
  32. Row 7 / Column 8 → 1 (Naked Single)
  33. Row 6 / Column 4 → 1 (Naked Single)
  34. Row 3 / Column 4 → 9 (Full House)
  35. Row 5 / Column 2 → 6 (Naked Single)
  36. Row 3 / Column 2 → 4 (Full House)
  37. Row 6 / Column 6 → 4 (Naked Single)
  38. Row 3 / Column 5 → 5 (Naked Single)
  39. Row 3 / Column 6 → 1 (Full House)
  40. Row 5 / Column 3 → 3 (Naked Single)
  41. Row 4 / Column 3 → 4 (Full House)
  42. Row 4 / Column 6 → 3 (Full House)
  43. Row 5 / Column 5 → 9 (Full House)
  44. Row 7 / Column 6 → 5 (Full House)
  45. Hidden Pair: 1,2 in r89c7 => r89c7<>3, r89c7<>6, r8c7<>8
  46. Row 8 / Column 7 → 2 (Naked Single)
  47. Row 9 / Column 7 → 2 (Naked Single)
  48. Row 8 / Column 3 → 6 (Naked Single)
  49. Row 3 / Column 3 → 2 (Full House)
  50. Row 8 / Column 1 → 3 (Full House)
  51. Row 8 / Column 8 → 8 (Full House)
  52. Row 9 / Column 1 → 3 (Full House)
  53. Row 3 / Column 1 → 6 (Full House)
  54. Row 6 / Column 8 → 6 (Naked Single)
  55. Row 6 / Column 7 → 8 (Full House)
  56. Row 9 / Column 5 → 6 (Naked Single)
  57. Row 7 / Column 5 → 3 (Full House)
  58. Give Up: Don't know how to proceed!
Show More...