Soluzione per Sudoku difficile #4492435681719

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

Questo puzzle di sudoku ha 56 passaggi e viene risolto utilizzando tecniche di Naked Single, Full House, Hidden Single, Locked Candidates Type 1 (Pointing), Bivalue Universal Grave + 1.

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

Passaggi della soluzione:

  1. Riga 3 / Colonna 4 → 3 (Naked Single)
  2. Riga 5 / Colonna 6 → 4 (Naked Single)
  3. Riga 3 / Colonna 2 → 9 (Naked Single)
  4. Riga 3 / Colonna 9 → 5 (Naked Single)
  5. Riga 2 / Colonna 6 → 1 (Naked Single)
  6. Riga 3 / Colonna 5 → 6 (Naked Single)
  7. Riga 3 / Colonna 8 → 2 (Full House)
  8. Riga 2 / Colonna 7 → 8 (Naked Single)
  9. Riga 7 / Colonna 8 → 5 (Naked Single)
  10. Riga 6 / Colonna 7 → 6 (Naked Single)
  11. Riga 7 / Colonna 6 → 6 (Naked Single)
  12. Riga 9 / Colonna 6 → 5 (Full House)
  13. Riga 9 / Colonna 7 → 2 (Naked Single)
  14. Riga 9 / Colonna 8 → 8 (Naked Single)
  15. Riga 8 / Colonna 8 → 1 (Full House)
  16. Riga 1 / Colonna 7 → 1 (Naked Single)
  17. Riga 5 / Colonna 7 → 5 (Full House)
  18. Riga 9 / Colonna 3 → 9 (Naked Single)
  19. Riga 2 / Colonna 8 → 9 (Hidden Single)
  20. Riga 1 / Colonna 5 → 5 (Hidden Single)
  21. Riga 1 / Colonna 8 → 6 (Hidden Single)
  22. Riga 4 / Colonna 2 → 1 (Hidden Single)
  23. Riga 5 / Colonna 9 → 1 (Hidden Single)
  24. Riga 5 / Colonna 8 → 3 (Hidden Single)
  25. Riga 4 / Colonna 3 → 5 (Hidden Single)
  26. Riga 8 / Colonna 2 → 5 (Hidden Single)
  27. Riga 6 / Colonna 9 → 8 (Hidden Single)
  28. Locked Candidates Type 1 (Pointing): 3 in b1 => r79c2<>3
  29. Locked Candidates Type 1 (Pointing): 7 in b5 => r5c123<>7
  30. Riga 1 / Colonna 3 → 7 (Hidden Single)
  31. Riga 1 / Colonna 4 → 4 (Naked Single)
  32. Riga 2 / Colonna 5 → 7 (Full House)
  33. Riga 2 / Colonna 2 → 3 (Naked Single)
  34. Riga 1 / Colonna 2 → 8 (Full House)
  35. Riga 1 / Colonna 9 → 3 (Full House)
  36. Riga 2 / Colonna 9 → 4 (Full House)
  37. Riga 8 / Colonna 4 → 9 (Naked Single)
  38. Riga 5 / Colonna 4 → 7 (Full House)
  39. Riga 5 / Colonna 5 → 9 (Full House)
  40. Bivalue Universal Grave + 1 => r9c1<>3, r9c1<>6
  41. Riga 9 / Colonna 1 → 4 (Naked Single)
  42. Riga 4 / Colonna 1 → 7 (Naked Single)
  43. Riga 4 / Colonna 8 → 4 (Full House)
  44. Riga 6 / Colonna 8 → 7 (Full House)
  45. Riga 6 / Colonna 2 → 4 (Full House)
  46. Riga 8 / Colonna 1 → 8 (Naked Single)
  47. Riga 9 / Colonna 2 → 6 (Naked Single)
  48. Riga 9 / Colonna 5 → 3 (Full House)
  49. Riga 7 / Colonna 1 → 3 (Naked Single)
  50. Riga 5 / Colonna 1 → 6 (Full House)
  51. Riga 8 / Colonna 3 → 2 (Naked Single)
  52. Riga 5 / Colonna 3 → 8 (Full House)
  53. Riga 5 / Colonna 2 → 2 (Full House)
  54. Riga 7 / Colonna 2 → 7 (Full House)
  55. Riga 7 / Colonna 5 → 2 (Full House)
  56. Riga 8 / Colonna 5 → 4 (Full House)
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