Soluzione per Sudoku difficile #1438641759219

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

Questo puzzle di sudoku ha 55 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 5 / Colonna 4 → 6 (Naked Single)
  2. Riga 7 / Colonna 6 → 4 (Naked Single)
  3. Riga 8 / Colonna 4 → 9 (Naked Single)
  4. Riga 7 / Colonna 1 → 1 (Naked Single)
  5. Riga 7 / Colonna 8 → 3 (Naked Single)
  6. Riga 8 / Colonna 3 → 5 (Naked Single)
  7. Riga 7 / Colonna 5 → 7 (Naked Single)
  8. Riga 7 / Colonna 2 → 8 (Full House)
  9. Riga 4 / Colonna 3 → 7 (Naked Single)
  10. Riga 3 / Colonna 2 → 1 (Naked Single)
  11. Riga 9 / Colonna 3 → 9 (Naked Single)
  12. Riga 1 / Colonna 2 → 5 (Naked Single)
  13. Riga 1 / Colonna 3 → 8 (Naked Single)
  14. Riga 5 / Colonna 3 → 1 (Full House)
  15. Riga 2 / Colonna 2 → 9 (Full House)
  16. Riga 3 / Colonna 4 → 7 (Naked Single)
  17. Riga 1 / Colonna 4 → 1 (Full House)
  18. Riga 1 / Colonna 7 → 3 (Naked Single)
  19. Riga 9 / Colonna 5 → 1 (Hidden Single)
  20. Riga 8 / Colonna 2 → 3 (Hidden Single)
  21. Riga 9 / Colonna 2 → 7 (Hidden Single)
  22. Riga 5 / Colonna 1 → 9 (Hidden Single)
  23. Riga 6 / Colonna 8 → 9 (Hidden Single)
  24. Riga 5 / Colonna 2 → 4 (Hidden Single)
  25. Riga 4 / Colonna 1 → 5 (Hidden Single)
  26. Riga 6 / Colonna 7 → 1 (Hidden Single)
  27. Riga 2 / Colonna 8 → 1 (Hidden Single)
  28. Locked Candidates Type 1 (Pointing): 2 in b5 => r5c789<>2
  29. Riga 9 / Colonna 7 → 2 (Hidden Single)
  30. Riga 8 / Colonna 8 → 4 (Naked Single)
  31. Riga 9 / Colonna 8 → 5 (Full House)
  32. Riga 9 / Colonna 6 → 6 (Naked Single)
  33. Riga 8 / Colonna 5 → 2 (Full House)
  34. Riga 8 / Colonna 1 → 6 (Full House)
  35. Riga 9 / Colonna 1 → 4 (Full House)
  36. Riga 2 / Colonna 6 → 3 (Naked Single)
  37. Riga 5 / Colonna 6 → 2 (Full House)
  38. Riga 5 / Colonna 5 → 3 (Full House)
  39. Bivalue Universal Grave + 1 => r1c9<>4, r1c9<>7
  40. Riga 1 / Colonna 9 → 6 (Naked Single)
  41. Riga 1 / Colonna 5 → 4 (Naked Single)
  42. Riga 1 / Colonna 8 → 7 (Full House)
  43. Riga 2 / Colonna 9 → 5 (Naked Single)
  44. Riga 6 / Colonna 9 → 2 (Naked Single)
  45. Riga 6 / Colonna 2 → 6 (Full House)
  46. Riga 4 / Colonna 2 → 2 (Full House)
  47. Riga 4 / Colonna 8 → 6 (Full House)
  48. Riga 3 / Colonna 5 → 8 (Naked Single)
  49. Riga 2 / Colonna 5 → 6 (Full House)
  50. Riga 2 / Colonna 7 → 8 (Full House)
  51. Riga 5 / Colonna 7 → 5 (Full House)
  52. Riga 5 / Colonna 8 → 8 (Naked Single)
  53. Riga 5 / Colonna 9 → 7 (Full House)
  54. Riga 3 / Colonna 9 → 4 (Full House)
  55. Riga 3 / Colonna 8 → 2 (Full House)
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