Solution for Evil Sudoku #1181713524895

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

This Sudoku Puzzle has 60 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Naked Single, Locked Triple, Full House techniques.

Try To Solve This Puzzle

Solution Steps:

  1. Row 2 / Column 8 → 8 (Hidden Single)
  2. Row 9 / Column 7 → 4 (Hidden Single)
  3. Row 2 / Column 5 → 7 (Hidden Single)
  4. Row 4 / Column 8 → 7 (Hidden Single)
  5. Row 1 / Column 9 → 7 (Hidden Single)
  6. Row 7 / Column 1 → 7 (Hidden Single)
  7. Row 6 / Column 2 → 7 (Hidden Single)
  8. Row 1 / Column 1 → 4 (Hidden Single)
  9. Row 6 / Column 3 → 1 (Hidden Single)
  10. Row 6 / Column 9 → 8 (Hidden Single)
  11. Row 5 / Column 3 → 8 (Hidden Single)
  12. Row 6 / Column 7 → 2 (Hidden Single)
  13. Locked Candidates Type 1 (Pointing): 2 in b3 => r3c56<>2
  14. Locked Candidates Type 1 (Pointing): 5 in b9 => r5c9<>5
  15. Locked Candidates Type 2 (Claiming): 6 in r6 => r4c46,r5c5<>6
  16. Locked Candidates Type 2 (Claiming): 9 in r6 => r4c46,r5c5<>9
  17. Row 4 / Column 6 → 4 (Naked Single)
  18. Row 5 / Column 5 → 3 (Naked Single)
  19. Row 4 / Column 4 → 3 (Naked Single)
  20. Row 3 / Column 5 → 4 (Hidden Single)
  21. Row 3 / Column 7 → 3 (Hidden Single)
  22. Locked Triple: 2,6,9 in r789c5 => r1c5,r8c6<>2, r1c5,r78c4,r8c6<>6, r1c5,r78c4,r8c6<>9
  23. Row 1 / Column 5 → 9 (Naked Single)
  24. Row 8 / Column 6 → 5 (Naked Single)
  25. Row 3 / Column 6 → 6 (Naked Single)
  26. Row 7 / Column 4 → 4 (Naked Single)
  27. Row 8 / Column 4 → 4 (Naked Single)
  28. Row 2 / Column 4 → 5 (Naked Single)
  29. Row 2 / Column 6 → 2 (Naked Single)
  30. Row 6 / Column 6 → 9 (Full House)
  31. Row 6 / Column 4 → 6 (Full House)
  32. Row 1 / Column 3 → 2 (Hidden Single)
  33. Row 3 / Column 2 → 5 (Hidden Single)
  34. Row 9 / Column 9 → 5 (Hidden Single)
  35. Row 9 / Column 1 → 2 (Hidden Single)
  36. Row 9 / Column 5 → 6 (Naked Single)
  37. Row 7 / Column 5 → 2 (Naked Single)
  38. Row 8 / Column 5 → 2 (Naked Single)
  39. Row 9 / Column 3 → 9 (Naked Single)
  40. Row 9 / Column 8 → 3 (Full House)
  41. Row 8 / Column 3 → 6 (Naked Single)
  42. Row 4 / Column 3 → 5 (Full House)
  43. Row 7 / Column 3 → 5 (Full House)
  44. Row 7 / Column 2 → 3 (Naked Single)
  45. Row 8 / Column 2 → 3 (Naked Single)
  46. Row 8 / Column 8 → 9 (Naked Single)
  47. Row 8 / Column 9 → 9 (Naked Single)
  48. Row 3 / Column 8 → 2 (Full House)
  49. Row 7 / Column 8 → 6 (Full House)
  50. Row 3 / Column 9 → 2 (Full House)
  51. Row 5 / Column 9 → 6 (Naked Single)
  52. Row 4 / Column 7 → 9 (Naked Single)
  53. Row 5 / Column 7 → 5 (Full House)
  54. Row 5 / Column 1 → 9 (Full House)
  55. Row 4 / Column 1 → 6 (Full House)
  56. Row 2 / Column 1 → 6 (Full House)
  57. Row 1 / Column 2 → 1 (Naked Single)
  58. Row 2 / Column 7 → 1 (Naked Single)
  59. Row 1 / Column 7 → 6 (Full House)
  60. Row 2 / Column 2 → 9 (Naked Single)
Show More...