Solution for Evil Sudoku #1248713524895

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

This Sudoku Puzzle has 64 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Naked Triple, Naked Single, Locked Pair, Full House techniques.

Try To Solve This Puzzle

Solution Steps:

  1. Row 4 / Column 8 → 8 (Hidden Single)
  2. Row 5 / Column 1 → 1 (Hidden Single)
  3. Row 3 / Column 3 → 4 (Hidden Single)
  4. Row 3 / Column 4 → 8 (Hidden Single)
  5. Row 8 / Column 7 → 8 (Hidden Single)
  6. Row 1 / Column 9 → 8 (Hidden Single)
  7. Locked Candidates Type 1 (Pointing): 5 in b6 => r6c2<>5
  8. Locked Candidates Type 2 (Claiming): 3 in c1 => r8c23,r9c2<>3
  9. Naked Triple: 3,6,9 in r4c46,r5c5 => r6c46<>6, r6c46<>9
  10. Row 6 / Column 4 → 1 (Naked Single)
  11. Row 6 / Column 6 → 1 (Naked Single)
  12. Row 3 / Column 9 → 1 (Hidden Single)
  13. Row 7 / Column 8 → 1 (Hidden Single)
  14. Row 1 / Column 8 → 2 (Hidden Single)
  15. Locked Candidates Type 1 (Pointing): 5 in b3 => r2c23<>5
  16. Locked Candidates Type 1 (Pointing): 6 in b3 => r2c234<>6
  17. Locked Candidates Type 1 (Pointing): 9 in b3 => r2c234<>9
  18. Row 2 / Column 2 → 3 (Naked Single)
  19. Row 2 / Column 4 → 7 (Naked Single)
  20. Row 2 / Column 3 → 7 (Naked Single)
  21. Row 8 / Column 6 → 7 (Hidden Single)
  22. Row 9 / Column 9 → 7 (Hidden Single)
  23. Row 5 / Column 8 → 7 (Hidden Single)
  24. Row 8 / Column 1 → 3 (Hidden Single)
  25. Locked Candidates Type 2 (Claiming): 2 in r8 => r79c1,r9c2<>2
  26. Row 3 / Column 1 → 2 (Hidden Single)
  27. Naked Triple: 5,6,9 in r1c56,r3c5 => r3c6<>5, r3c6<>6, r3c6<>9
  28. Row 3 / Column 6 → 9 (Naked Single)
  29. Locked Pair: 5,6 in r1c56 => r1c13,r3c5<>5, r1c13,r3c5<>6
  30. Row 1 / Column 1 → 9 (Naked Single)
  31. Row 1 / Column 3 → 9 (Naked Single)
  32. Row 3 / Column 5 → 6 (Naked Single)
  33. Row 1 / Column 5 → 5 (Naked Single)
  34. Row 1 / Column 6 → 5 (Naked Single)
  35. Row 3 / Column 2 → 5 (Naked Single)
  36. Row 4 / Column 3 → 5 (Hidden Single)
  37. Row 7 / Column 1 → 5 (Hidden Single)
  38. Row 9 / Column 1 → 6 (Full House)
  39. Row 8 / Column 3 → 2 (Naked Single)
  40. Row 9 / Column 2 → 9 (Full House)
  41. Row 8 / Column 2 → 9 (Full House)
  42. Row 4 / Column 2 → 6 (Naked Single)
  43. Row 9 / Column 4 → 2 (Naked Single)
  44. Row 9 / Column 5 → 3 (Full House)
  45. Row 9 / Column 7 → 3 (Full House)
  46. Row 8 / Column 8 → 6 (Naked Single)
  47. Row 4 / Column 4 → 9 (Naked Single)
  48. Row 4 / Column 6 → 3 (Full House)
  49. Row 7 / Column 4 → 6 (Full House)
  50. Row 5 / Column 2 → 2 (Naked Single)
  51. Row 5 / Column 3 → 3 (Naked Single)
  52. Row 6 / Column 2 → 2 (Full House)
  53. Row 5 / Column 5 → 9 (Naked Single)
  54. Row 7 / Column 5 → 9 (Naked Single)
  55. Row 7 / Column 6 → 6 (Naked Single)
  56. Row 5 / Column 7 → 6 (Naked Single)
  57. Row 5 / Column 9 → 6 (Naked Single)
  58. Row 7 / Column 7 → 2 (Naked Single)
  59. Row 7 / Column 9 → 2 (Naked Single)
  60. Row 2 / Column 9 → 9 (Naked Single)
  61. Row 2 / Column 7 → 5 (Full House)
  62. Row 2 / Column 8 → 5 (Full House)
  63. Row 6 / Column 7 → 9 (Naked Single)
  64. Row 6 / Column 8 → 9 (Naked Single)
Show More...