Soluzione per Sudoku difficile #4212459867318

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

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 2 → 2 (Hidden Single)
  2. Locked Triple: 2,4,5 in r7c456 => r7c37,r8c46,r9c5<>4, r7c7,r9c5<>5, r8c46<>2
  3. Riga 9 / Colonna 5 → 6 (Naked Single)
  4. Riga 3 / Colonna 5 → 2 (Naked Single)
  5. Locked Candidates Type 1 (Pointing): 8 in b2 => r3c3<>8
  6. Locked Candidates Type 1 (Pointing): 7 in b8 => r8c2<>7
  7. Locked Candidates Type 1 (Pointing): 8 in b8 => r8c78<>8
  8. Naked Pair: 4,5 in r17c5 => r46c5<>5, r6c5<>4
  9. X-Wing: 9 r37 c37 => r2c37,r458c7,r568c3<>9
  10. Skyscraper: 9 in r2c1,r5c2 (connected by r25c8) => r46c1<>9
  11. Riga 2 / Colonna 1 → 9 (Hidden Single)
  12. Riga 3 / Colonna 7 → 9 (Hidden Single)
  13. Riga 7 / Colonna 7 → 3 (Naked Single)
  14. Riga 7 / Colonna 3 → 9 (Naked Single)
  15. Riga 2 / Colonna 3 → 1 (Hidden Single)
  16. Riga 8 / Colonna 3 → 4 (Naked Single)
  17. Riga 8 / Colonna 2 → 1 (Naked Single)
  18. Riga 8 / Colonna 7 → 6 (Naked Single)
  19. Riga 9 / Colonna 2 → 7 (Naked Single)
  20. Riga 9 / Colonna 1 → 3 (Full House)
  21. Riga 1 / Colonna 2 → 6 (Naked Single)
  22. Riga 3 / Colonna 3 → 3 (Naked Single)
  23. Riga 4 / Colonna 2 → 9 (Naked Single)
  24. Riga 5 / Colonna 2 → 4 (Full House)
  25. Riga 1 / Colonna 3 → 8 (Naked Single)
  26. Riga 1 / Colonna 1 → 7 (Full House)
  27. Riga 3 / Colonna 6 → 8 (Naked Single)
  28. Riga 3 / Colonna 4 → 6 (Full House)
  29. Riga 4 / Colonna 5 → 1 (Naked Single)
  30. Riga 6 / Colonna 3 → 5 (Naked Single)
  31. Riga 5 / Colonna 3 → 6 (Full House)
  32. Riga 8 / Colonna 6 → 7 (Naked Single)
  33. Riga 4 / Colonna 1 → 8 (Naked Single)
  34. Riga 6 / Colonna 1 → 1 (Full House)
  35. Riga 6 / Colonna 5 → 9 (Naked Single)
  36. Riga 5 / Colonna 6 → 5 (Naked Single)
  37. Riga 8 / Colonna 4 → 8 (Naked Single)
  38. Riga 4 / Colonna 7 → 5 (Naked Single)
  39. Riga 6 / Colonna 9 → 2 (Naked Single)
  40. Riga 4 / Colonna 6 → 2 (Naked Single)
  41. Riga 4 / Colonna 9 → 6 (Full House)
  42. Riga 5 / Colonna 4 → 7 (Naked Single)
  43. Riga 6 / Colonna 4 → 4 (Full House)
  44. Riga 6 / Colonna 8 → 8 (Full House)
  45. Riga 5 / Colonna 7 → 1 (Naked Single)
  46. Riga 5 / Colonna 8 → 9 (Full House)
  47. Riga 2 / Colonna 7 → 4 (Naked Single)
  48. Riga 9 / Colonna 7 → 8 (Full House)
  49. Riga 8 / Colonna 9 → 9 (Naked Single)
  50. Riga 8 / Colonna 8 → 2 (Full House)
  51. Riga 7 / Colonna 6 → 4 (Naked Single)
  52. Riga 2 / Colonna 6 → 3 (Full House)
  53. Riga 2 / Colonna 4 → 5 (Naked Single)
  54. Riga 1 / Colonna 5 → 4 (Full House)
  55. Riga 7 / Colonna 5 → 5 (Full House)
  56. Riga 2 / Colonna 8 → 6 (Full House)
  57. Riga 7 / Colonna 4 → 2 (Full House)
  58. Riga 9 / Colonna 8 → 5 (Naked Single)
  59. Riga 1 / Colonna 8 → 3 (Full House)
  60. Riga 1 / Colonna 9 → 5 (Full House)
  61. Riga 9 / Colonna 9 → 4 (Full House)
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