Solution for Evil Sudoku #3158179632444

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

This Sudoku Puzzle has 56 steps and it is solved using Naked Single, Full House, Hidden Single, Naked Pair, undefined, Hidden Rectangle techniques.

Try To Solve This Puzzle

Solution Steps:

  1. Row 5 / Column 1 → 5 (Naked Single)
  2. Row 5 / Column 9 → 1 (Naked Single)
  3. Row 5 / Column 5 → 4 (Full House)
  4. Row 2 / Column 1 → 2 (Hidden Single)
  5. Row 4 / Column 7 → 9 (Hidden Single)
  6. Row 9 / Column 8 → 5 (Hidden Single)
  7. Row 6 / Column 6 → 2 (Hidden Single)
  8. Row 6 / Column 3 → 4 (Hidden Single)
  9. Row 1 / Column 2 → 1 (Hidden Single)
  10. Row 1 / Column 1 → 6 (Hidden Single)
  11. Row 1 / Column 7 → 7 (Naked Single)
  12. Row 2 / Column 2 → 9 (Hidden Single)
  13. Row 3 / Column 3 → 7 (Hidden Single)
  14. Row 8 / Column 9 → 7 (Hidden Single)
  15. Row 7 / Column 1 → 7 (Hidden Single)
  16. Naked Pair: 3,8 in r8c18 => r8c46<>3, r8c4<>8
  17. X-Wing: 8 r48 c18 => r7c8<>8
  18. X-Wing: 8 r17 c35 => r39c5,r9c3<>8
  19. Hidden Rectangle: 2/6 in r3c79,r9c79 => r9c9<>6
  20. XY-Chain: 8 8- r4c1 -3- r6c2 -8- r3c2 -3- r2c3 -5- r2c9 -6- r6c9 -8 => r4c8,r6c2<>8
  21. Row 4 / Column 8 → 6 (Naked Single)
  22. Row 6 / Column 9 → 8 (Full House)
  23. Row 6 / Column 2 → 3 (Naked Single)
  24. Row 3 / Column 2 → 8 (Full House)
  25. Row 4 / Column 1 → 8 (Full House)
  26. Row 8 / Column 1 → 3 (Full House)
  27. Row 7 / Column 8 → 3 (Naked Single)
  28. Row 8 / Column 8 → 8 (Full House)
  29. Row 9 / Column 9 → 2 (Naked Single)
  30. Row 1 / Column 3 → 5 (Naked Single)
  31. Row 2 / Column 3 → 3 (Full House)
  32. Row 9 / Column 3 → 1 (Naked Single)
  33. Row 7 / Column 3 → 8 (Full House)
  34. Row 1 / Column 6 → 9 (Naked Single)
  35. Row 1 / Column 5 → 8 (Full House)
  36. Row 9 / Column 7 → 6 (Naked Single)
  37. Row 8 / Column 6 → 4 (Naked Single)
  38. Row 3 / Column 7 → 2 (Naked Single)
  39. Row 9 / Column 5 → 3 (Naked Single)
  40. Row 9 / Column 4 → 8 (Full House)
  41. Row 7 / Column 6 → 6 (Naked Single)
  42. Row 8 / Column 7 → 1 (Naked Single)
  43. Row 7 / Column 7 → 4 (Full House)
  44. Row 7 / Column 5 → 1 (Full House)
  45. Row 8 / Column 4 → 9 (Full House)
  46. Row 2 / Column 6 → 5 (Naked Single)
  47. Row 4 / Column 6 → 3 (Full House)
  48. Row 4 / Column 5 → 5 (Naked Single)
  49. Row 4 / Column 4 → 1 (Full House)
  50. Row 6 / Column 4 → 6 (Naked Single)
  51. Row 6 / Column 5 → 9 (Full House)
  52. Row 3 / Column 5 → 6 (Full House)
  53. Row 2 / Column 9 → 6 (Naked Single)
  54. Row 2 / Column 4 → 4 (Full House)
  55. Row 3 / Column 4 → 3 (Full House)
  56. Row 3 / Column 9 → 5 (Full House)
Show More...