Solution for Medium Sudoku #21871394526102

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

This Sudoku Puzzle has 62 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Naked Triple, Naked Single, Locked Candidates Type 2 (Claiming), 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 2 / Column 1 → 2 (Hidden Single)
  2. Row 8 / Column 3 → 8 (Hidden Single)
  3. Row 8 / Column 8 → 2 (Hidden Single)
  4. Row 7 / Column 8 → 5 (Hidden Single)
  5. Locked Candidates Type 1 (Pointing): 5 in b4 => r1c1<>5
  6. Locked Candidates Type 1 (Pointing): 9 in b4 => r123c3<>9
  7. Locked Candidates Type 1 (Pointing): 6 in b7 => r1c1<>6
  8. Naked Triple: 2,7,9 in r5c46,r6c4 => r46c5<>7, r4c56,r6c5<>9
  9. Row 6 / Column 5 → 3 (Naked Single)
  10. Row 8 / Column 5 → 7 (Hidden Single)
  11. Row 8 / Column 6 → 5 (Hidden Single)
  12. Row 2 / Column 5 → 5 (Hidden Single)
  13. Row 1 / Column 2 → 5 (Hidden Single)
  14. Row 8 / Column 7 → 6 (Hidden Single)
  15. Naked Triple: 7,8,9 in r4c79,r6c7 => r56c9<>7, r56c9<>9
  16. Locked Candidates Type 2 (Claiming): 9 in r5 => r6c4<>9
  17. Naked Triple: 1,4,9 in r138c9 => r49c9<>9, r9c9<>4
  18. Locked Candidates Type 1 (Pointing): 9 in b6 => r279c7<>9
  19. Row 9 / Column 8 → 9 (Hidden Single)
  20. Row 1 / Column 8 → 3 (Naked Single)
  21. Row 2 / Column 8 → 8 (Full House)
  22. Row 3 / Column 6 → 3 (Hidden Single)
  23. Row 3 / Column 4 → 2 (Hidden Single)
  24. Row 6 / Column 4 → 7 (Naked Single)
  25. Row 5 / Column 4 → 9 (Naked Single)
  26. Row 6 / Column 7 → 9 (Naked Single)
  27. Row 2 / Column 4 → 4 (Naked Single)
  28. Row 5 / Column 6 → 2 (Naked Single)
  29. Row 6 / Column 3 → 1 (Naked Single)
  30. Row 2 / Column 7 → 1 (Naked Single)
  31. Row 5 / Column 9 → 5 (Naked Single)
  32. Row 5 / Column 1 → 7 (Full House)
  33. Row 2 / Column 3 → 3 (Naked Single)
  34. Row 2 / Column 2 → 9 (Full House)
  35. Row 3 / Column 3 → 6 (Naked Single)
  36. Row 6 / Column 1 → 5 (Naked Single)
  37. Row 6 / Column 9 → 2 (Full House)
  38. Row 1 / Column 1 → 4 (Naked Single)
  39. Row 4 / Column 1 → 3 (Naked Single)
  40. Row 4 / Column 3 → 9 (Full House)
  41. Row 1 / Column 3 → 7 (Full House)
  42. Row 3 / Column 2 → 1 (Full House)
  43. Row 3 / Column 5 → 9 (Naked Single)
  44. Row 1 / Column 6 → 6 (Full House)
  45. Row 1 / Column 9 → 9 (Full House)
  46. Row 3 / Column 9 → 4 (Full House)
  47. Row 9 / Column 1 → 6 (Naked Single)
  48. Row 7 / Column 1 → 1 (Full House)
  49. Row 8 / Column 2 → 4 (Naked Single)
  50. Row 8 / Column 9 → 1 (Full House)
  51. Row 9 / Column 2 → 3 (Full House)
  52. Row 4 / Column 6 → 4 (Naked Single)
  53. Row 4 / Column 5 → 6 (Full House)
  54. Row 7 / Column 6 → 9 (Full House)
  55. Row 7 / Column 5 → 4 (Full House)
  56. Row 9 / Column 4 → 8 (Naked Single)
  57. Row 7 / Column 4 → 6 (Full House)
  58. Row 7 / Column 7 → 8 (Full House)
  59. Row 9 / Column 9 → 7 (Naked Single)
  60. Row 4 / Column 9 → 8 (Full House)
  61. Row 4 / Column 7 → 7 (Full House)
  62. Row 9 / Column 7 → 4 (Full House)
Show More...