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

Questo puzzle di sudoku ha 39 passaggi e viene risolto utilizzando tecniche di Locked Candidates Type 1 (Pointing), Naked Pair, Hidden Single, Naked Single, Full House, Skyscraper, Locked Pair.

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

Passaggi della soluzione:

  1. Locked Candidates Type 1 (Pointing): 2 in b7 => r13c3<>2
  2. Naked Pair: 8,9 in r8c57 => r8c38<>8, r8c8<>9
  3. Riga 1 / Colonna 8 → 9 (Hidden Single)
  4. Riga 9 / Colonna 8 → 8 (Hidden Single)
  5. Riga 8 / Colonna 7 → 9 (Naked Single)
  6. Riga 9 / Colonna 5 → 1 (Naked Single)
  7. Riga 5 / Colonna 7 → 5 (Naked Single)
  8. Riga 5 / Colonna 9 → 9 (Full House)
  9. Riga 8 / Colonna 5 → 8 (Naked Single)
  10. Riga 7 / Colonna 5 → 9 (Full House)
  11. Riga 7 / Colonna 7 → 4 (Naked Single)
  12. Riga 9 / Colonna 7 → 7 (Naked Single)
  13. Riga 2 / Colonna 7 → 6 (Naked Single)
  14. Riga 2 / Colonna 9 → 4 (Hidden Single)
  15. Riga 1 / Colonna 2 → 6 (Hidden Single)
  16. Naked Pair: 3,5 in r7c29 => r7c3<>3, r7c3<>5
  17. Skyscraper: 3 in r2c8,r7c9 (connected by r27c2) => r3c9,r8c8<>3
  18. Riga 8 / Colonna 8 → 2 (Naked Single)
  19. Riga 2 / Colonna 8 → 3 (Full House)
  20. Riga 8 / Colonna 3 → 3 (Full House)
  21. Riga 2 / Colonna 2 → 5 (Full House)
  22. Riga 7 / Colonna 2 → 5 (Full House)
  23. Riga 2 / Colonna 5 → 2 (Full House)
  24. Riga 9 / Colonna 9 → 5 (Naked Single)
  25. Riga 7 / Colonna 9 → 3 (Full House)
  26. Riga 9 / Colonna 3 → 2 (Full House)
  27. Riga 3 / Colonna 5 → 7 (Naked Single)
  28. Riga 1 / Colonna 5 → 5 (Full House)
  29. Riga 3 / Colonna 9 → 2 (Naked Single)
  30. Riga 1 / Colonna 9 → 7 (Full House)
  31. Riga 1 / Colonna 1 → 2 (Hidden Single)
  32. Locked Pair: 1,8 in r13c3 => r3c1,r7c3<>1, r3c1,r7c3<>8
  33. Riga 7 / Colonna 3 → 8 (Naked Single)
  34. Riga 3 / Colonna 1 → 8 (Naked Single)
  35. Riga 1 / Colonna 3 → 1 (Naked Single)
  36. Riga 1 / Colonna 7 → 8 (Full House)
  37. Riga 3 / Colonna 7 → 1 (Full House)
  38. Riga 3 / Colonna 3 → 1 (Naked Single)
  39. Riga 7 / Colonna 1 → 1 (Naked Single)
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