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

Questo puzzle di sudoku ha 81 passaggi e viene risolto utilizzando tecniche di Hidden Single, Naked Single, Locked Pair, Locked Candidates Type 1 (Pointing), undefined, AIC, Hidden Pair, Naked Triple, Naked Pair, Skyscraper, Locked Candidates Type 2 (Claiming), Uniqueness Test 2, Uniqueness Test 4, Full House.

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

Passaggi della soluzione:

  1. Riga 3 / Colonna 2 → 1 (Hidden Single)
  2. Riga 1 / Colonna 9 → 8 (Hidden Single)
  3. Riga 6 / Colonna 4 → 1 (Hidden Single)
  4. Riga 8 / Colonna 8 → 2 (Hidden Single)
  5. Riga 4 / Colonna 4 → 8 (Hidden Single)
  6. Riga 4 / Colonna 8 → 5 (Naked Single)
  7. Locked Pair: 5,9 in r8c46 => r7c56,r8c29,r9c5<>5, r7c56,r8c29,r9c5<>9
  8. Riga 7 / Colonna 6 → 4 (Naked Single)
  9. Locked Candidates Type 1 (Pointing): 6 in b5 => r3c5<>6
  10. Locked Candidates Type 1 (Pointing): 7 in b5 => r2c6<>7
  11. 2-String Kite: 3 in r2c8,r8c2 (connected by r7c8,r8c9) => r2c2<>3
  12. AIC: 3 3- r7c8 =3= r2c8 -3- r2c6 =3= r5c6 =2= r4c6 =7= r4c9 -7- r2c9 =7= r2c4 =6= r2c2 -6- r8c2 -3 => r7c23,r8c9<>3
  13. Riga 8 / Colonna 9 → 6 (Naked Single)
  14. Riga 8 / Colonna 2 → 3 (Naked Single)
  15. XY-Chain: 9 9- r5c9 -1- r5c8 -8- r6c8 -4- r2c8 -3- r2c6 -5- r8c6 -9 => r5c6<>9
  16. AIC: 4 4- r1c2 =4= r2c2 =6= r2c4 =7= r2c9 -7- r4c9 =7= r4c6 =2= r5c6 =3= r2c6 -3- r2c8 -4 => r1c7,r2c2<>4
  17. Riga 1 / Colonna 2 → 4 (Hidden Single)
  18. Riga 3 / Colonna 5 → 4 (Hidden Single)
  19. AIC: 6 6- r2c2 -5- r2c6 -3- r2c8 -4- r6c8 =4= r6c7 =7= r4c9 -7- r2c9 =7= r2c4 =6= r3c4 -6 => r2c4,r3c13<>6
  20. Riga 2 / Colonna 2 → 6 (Hidden Single)
  21. Riga 3 / Colonna 4 → 6 (Hidden Single)
  22. Riga 4 / Colonna 5 → 6 (Hidden Single)
  23. Hidden Pair: 6,7 in r7c13 => r7c13<>5, r7c1<>8, r7c3<>9
  24. XY-Chain: 7 7- r2c4 -5- r2c6 -3- r2c8 -4- r6c8 -8- r5c8 -1- r5c9 -9- r4c9 -7 => r2c9<>7
  25. Riga 2 / Colonna 4 → 7 (Hidden Single)
  26. AIC: 9 9- r4c2 -2- r4c6 =2= r5c6 =3= r2c6 -3- r2c8 =3= r7c8 =1= r5c8 -1- r5c9 -9 => r4c9,r5c3<>9
  27. Riga 4 / Colonna 9 → 7 (Naked Single)
  28. Riga 6 / Colonna 6 → 7 (Hidden Single)
  29. Naked Triple: 3,4,5 in r2c89,r3c9 => r13c7<>5
  30. Locked Candidates Type 1 (Pointing): 5 in b3 => r79c9<>5
  31. XYZ-Wing: 1/3/9 in r57c9,r7c8 => r9c9<>1
  32. Riga 9 / Colonna 5 → 1 (Hidden Single)
  33. Riga 7 / Colonna 5 → 8 (Naked Single)
  34. Naked Pair: 5,9 in r7c27 => r7c9<>9
  35. Skyscraper: 9 in r5c9,r6c3 (connected by r9c39) => r6c7<>9
  36. Locked Candidates Type 1 (Pointing): 9 in b6 => r5c5<>9
  37. W-Wing: 5/9 in r6c5,r7c2 connected by 9 in r4c26 => r6c2<>5
  38. Locked Candidates Type 2 (Claiming): 5 in c2 => r9c13<>5
  39. Uniqueness Test 2: 2/7 in r1c17,r3c17 => r13c3,r5c1<>5
  40. Uniqueness Test 4: 5/9 in r7c27,r9c27 => r9c27<>9
  41. XY-Chain: 5 5- r2c6 -3- r2c8 -4- r6c8 -8- r6c2 -9- r6c5 -5 => r1c5,r5c6<>5
  42. XY-Chain: 2 2- r4c2 -9- r7c2 -5- r7c7 -9- r5c7 -6- r6c7 -4- r6c8 -8- r6c2 -9- r6c5 -5- r5c5 -3- r5c6 -2 => r4c6,r5c13<>2
  43. Riga 4 / Colonna 6 → 9 (Naked Single)
  44. Riga 4 / Colonna 2 → 2 (Full House)
  45. Riga 6 / Colonna 5 → 5 (Naked Single)
  46. Riga 8 / Colonna 6 → 5 (Naked Single)
  47. Riga 8 / Colonna 4 → 9 (Full House)
  48. Riga 1 / Colonna 4 → 5 (Full House)
  49. Riga 5 / Colonna 5 → 3 (Naked Single)
  50. Riga 1 / Colonna 5 → 9 (Full House)
  51. Riga 2 / Colonna 6 → 3 (Full House)
  52. Riga 5 / Colonna 6 → 2 (Full House)
  53. Riga 2 / Colonna 8 → 4 (Naked Single)
  54. Riga 2 / Colonna 9 → 5 (Full House)
  55. Riga 6 / Colonna 8 → 8 (Naked Single)
  56. Riga 3 / Colonna 9 → 3 (Naked Single)
  57. Riga 5 / Colonna 8 → 1 (Naked Single)
  58. Riga 7 / Colonna 8 → 3 (Full House)
  59. Riga 6 / Colonna 2 → 9 (Naked Single)
  60. Riga 7 / Colonna 9 → 1 (Naked Single)
  61. Riga 5 / Colonna 9 → 9 (Naked Single)
  62. Riga 9 / Colonna 9 → 4 (Full House)
  63. Riga 6 / Colonna 3 → 6 (Naked Single)
  64. Riga 6 / Colonna 7 → 4 (Full House)
  65. Riga 5 / Colonna 7 → 6 (Full House)
  66. Riga 7 / Colonna 2 → 5 (Naked Single)
  67. Riga 9 / Colonna 2 → 8 (Full House)
  68. Riga 9 / Colonna 7 → 5 (Naked Single)
  69. Riga 7 / Colonna 7 → 9 (Full House)
  70. Riga 5 / Colonna 1 → 8 (Naked Single)
  71. Riga 5 / Colonna 3 → 5 (Full House)
  72. Riga 7 / Colonna 3 → 7 (Naked Single)
  73. Riga 7 / Colonna 1 → 6 (Full House)
  74. Riga 9 / Colonna 1 → 2 (Naked Single)
  75. Riga 9 / Colonna 3 → 9 (Full House)
  76. Riga 3 / Colonna 3 → 2 (Naked Single)
  77. Riga 1 / Colonna 3 → 3 (Full House)
  78. Riga 1 / Colonna 1 → 7 (Naked Single)
  79. Riga 1 / Colonna 7 → 2 (Full House)
  80. Riga 3 / Colonna 7 → 7 (Full House)
  81. Riga 3 / Colonna 1 → 5 (Full House)
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