Soluzione per Sudoku difficile #4396538214718

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

Questo puzzle di sudoku ha 61 passaggi e viene risolto utilizzando tecniche di Hidden Single, Locked Triple, Naked Single, Locked Candidates Type 1 (Pointing), Naked Pair, undefined, Skyscraper, Full House.

Naked Single Spiegazione
Hidden Single Spiegazione
Locked Candidates Spiegazione
Full House Spiegazione
Prova a risolvere

Passaggi della soluzione:

  1. Riga 2 / Colonna 8 → 6 (Hidden Single)
  2. Locked Triple: 3,5,6 in r456c3 => r37c3,r46c2,r5c1<>5, r5c1,r7c3<>3, r46c2<>6
  3. Riga 5 / Colonna 1 → 1 (Naked Single)
  4. Riga 5 / Colonna 7 → 6 (Naked Single)
  5. Locked Candidates Type 1 (Pointing): 2 in b4 => r78c2<>2
  6. Locked Candidates Type 1 (Pointing): 4 in b4 => r2c2<>4
  7. Locked Candidates Type 1 (Pointing): 2 in b6 => r3c7<>2
  8. Naked Pair: 3,5 in r5c39 => r5c46<>3, r5c4<>5
  9. X-Wing: 8 c37 r37 => r3c2458,r7c2568<>8
  10. Skyscraper: 8 in r1c8,r2c5 (connected by r8c58) => r1c46<>8
  11. Riga 1 / Colonna 8 → 8 (Hidden Single)
  12. Riga 3 / Colonna 3 → 8 (Hidden Single)
  13. Riga 7 / Colonna 3 → 7 (Naked Single)
  14. Riga 7 / Colonna 7 → 8 (Hidden Single)
  15. Riga 3 / Colonna 8 → 9 (Hidden Single)
  16. Riga 3 / Colonna 2 → 5 (Naked Single)
  17. Riga 2 / Colonna 1 → 4 (Naked Single)
  18. Riga 2 / Colonna 2 → 9 (Naked Single)
  19. Riga 1 / Colonna 1 → 7 (Full House)
  20. Riga 7 / Colonna 2 → 1 (Naked Single)
  21. Riga 2 / Colonna 9 → 1 (Naked Single)
  22. Riga 2 / Colonna 6 → 8 (Naked Single)
  23. Riga 2 / Colonna 5 → 5 (Full House)
  24. Riga 3 / Colonna 7 → 7 (Naked Single)
  25. Riga 5 / Colonna 6 → 9 (Naked Single)
  26. Riga 3 / Colonna 9 → 2 (Naked Single)
  27. Riga 1 / Colonna 9 → 4 (Full House)
  28. Riga 6 / Colonna 7 → 2 (Naked Single)
  29. Riga 4 / Colonna 7 → 1 (Full House)
  30. Riga 1 / Colonna 6 → 2 (Naked Single)
  31. Riga 1 / Colonna 4 → 9 (Full House)
  32. Riga 5 / Colonna 4 → 8 (Naked Single)
  33. Riga 3 / Colonna 4 → 3 (Naked Single)
  34. Riga 3 / Colonna 5 → 1 (Full House)
  35. Riga 6 / Colonna 2 → 4 (Naked Single)
  36. Riga 7 / Colonna 6 → 3 (Naked Single)
  37. Riga 9 / Colonna 4 → 6 (Naked Single)
  38. Riga 4 / Colonna 2 → 2 (Naked Single)
  39. Riga 6 / Colonna 5 → 3 (Naked Single)
  40. Riga 6 / Colonna 6 → 6 (Naked Single)
  41. Riga 9 / Colonna 6 → 1 (Full House)
  42. Riga 7 / Colonna 5 → 9 (Naked Single)
  43. Riga 7 / Colonna 8 → 5 (Naked Single)
  44. Riga 7 / Colonna 1 → 2 (Full House)
  45. Riga 8 / Colonna 5 → 8 (Naked Single)
  46. Riga 8 / Colonna 4 → 2 (Full House)
  47. Riga 4 / Colonna 4 → 5 (Full House)
  48. Riga 4 / Colonna 5 → 4 (Full House)
  49. Riga 9 / Colonna 2 → 8 (Naked Single)
  50. Riga 8 / Colonna 2 → 6 (Full House)
  51. Riga 6 / Colonna 3 → 5 (Naked Single)
  52. Riga 6 / Colonna 8 → 7 (Full House)
  53. Riga 4 / Colonna 8 → 3 (Naked Single)
  54. Riga 4 / Colonna 3 → 6 (Full House)
  55. Riga 5 / Colonna 3 → 3 (Full House)
  56. Riga 5 / Colonna 9 → 5 (Full House)
  57. Riga 8 / Colonna 8 → 1 (Full House)
  58. Riga 9 / Colonna 9 → 3 (Naked Single)
  59. Riga 8 / Colonna 9 → 7 (Full House)
  60. Riga 8 / Colonna 1 → 3 (Full House)
  61. Riga 9 / Colonna 1 → 5 (Full House)
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