Solution for Evil Sudoku #1237713524895

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

This Sudoku Puzzle has 61 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Naked Single, Locked Candidates Type 2 (Claiming), Locked Pair, Full House techniques.

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

Solution Steps:

  1. Row 5 / Column 5 → 3 (Hidden Single)
  2. Row 2 / Column 4 → 7 (Hidden Single)
  3. Row 5 / Column 1 → 1 (Hidden Single)
  4. Row 8 / Column 8 → 7 (Hidden Single)
  5. Row 5 / Column 9 → 7 (Hidden Single)
  6. Row 7 / Column 1 → 4 (Hidden Single)
  7. Row 7 / Column 6 → 3 (Hidden Single)
  8. Row 9 / Column 2 → 3 (Hidden Single)
  9. Row 8 / Column 7 → 8 (Hidden Single)
  10. Row 7 / Column 5 → 5 (Hidden Single)
  11. Row 2 / Column 3 → 3 (Hidden Single)
  12. Row 9 / Column 1 → 5 (Hidden Single)
  13. Locked Candidates Type 1 (Pointing): 1 in b2 => r3c9<>1
  14. Locked Candidates Type 1 (Pointing): 8 in b6 => r1c8<>8
  15. Locked Candidates Type 1 (Pointing): 6 in b7 => r8c6<>6
  16. Row 8 / Column 6 → 9 (Naked Single)
  17. Locked Candidates Type 1 (Pointing): 9 in b5 => r3c4<>9
  18. Locked Candidates Type 2 (Claiming): 9 in r7 => r9c79<>9
  19. Locked Pair: 2,6 in r9c79 => r7c789,r9c4<>2, r7c789,r9c45<>6
  20. Row 9 / Column 4 → 8 (Naked Single)
  21. Row 9 / Column 5 → 8 (Naked Single)
  22. Row 7 / Column 7 → 9 (Naked Single)
  23. Row 7 / Column 8 → 1 (Naked Single)
  24. Row 7 / Column 9 → 1 (Naked Single)
  25. Row 7 / Column 4 → 2 (Hidden Single)
  26. Row 1 / Column 9 → 8 (Hidden Single)
  27. Row 1 / Column 3 → 4 (Hidden Single)
  28. Row 3 / Column 9 → 4 (Hidden Single)
  29. Row 9 / Column 9 → 2 (Hidden Single)
  30. Row 9 / Column 7 → 6 (Naked Single)
  31. Row 2 / Column 7 → 5 (Naked Single)
  32. Row 1 / Column 8 → 2 (Hidden Single)
  33. Row 2 / Column 9 → 9 (Hidden Single)
  34. Row 2 / Column 2 → 6 (Full House)
  35. Row 2 / Column 8 → 6 (Full House)
  36. Row 1 / Column 1 → 9 (Naked Single)
  37. Row 8 / Column 2 → 2 (Naked Single)
  38. Row 8 / Column 1 → 6 (Full House)
  39. Row 3 / Column 1 → 2 (Full House)
  40. Row 3 / Column 2 → 5 (Full House)
  41. Row 8 / Column 3 → 6 (Full House)
  42. Row 3 / Column 3 → 5 (Full House)
  43. Row 5 / Column 8 → 9 (Naked Single)
  44. Row 1 / Column 5 → 6 (Naked Single)
  45. Row 1 / Column 6 → 5 (Full House)
  46. Row 4 / Column 3 → 9 (Naked Single)
  47. Row 5 / Column 2 → 4 (Naked Single)
  48. Row 5 / Column 3 → 2 (Full House)
  49. Row 4 / Column 2 → 8 (Full House)
  50. Row 5 / Column 7 → 2 (Full House)
  51. Row 6 / Column 2 → 8 (Full House)
  52. Row 3 / Column 4 → 1 (Naked Single)
  53. Row 3 / Column 5 → 9 (Naked Single)
  54. Row 3 / Column 6 → 1 (Full House)
  55. Row 4 / Column 4 → 6 (Naked Single)
  56. Row 6 / Column 4 → 9 (Full House)
  57. Row 4 / Column 6 → 4 (Full House)
  58. Row 4 / Column 8 → 5 (Full House)
  59. Row 6 / Column 6 → 4 (Full House)
  60. Row 6 / Column 7 → 4 (Naked Single)
  61. Row 6 / Column 8 → 5 (Naked Single)
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