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

Questo puzzle di sudoku ha 21 passaggi e viene risolto utilizzando tecniche di Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Naked Triple, Hidden Pair, Hidden Single, Uniqueness Test 4, undefined, Naked Single, Uniqueness Test 3, Give Up.

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

Passaggi della soluzione:

  1. Locked Candidates Type 1 (Pointing): 2 in b3 => r3c45<>2
  2. Locked Candidates Type 1 (Pointing): 9 in b4 => r789c2<>9
  3. Locked Candidates Type 1 (Pointing): 1 in b6 => r79c7<>1
  4. Locked Candidates Type 2 (Claiming): 4 in r8 => r7c45,r9c45<>4
  5. Locked Candidates Type 2 (Claiming): 5 in c6 => r4c45,r5c45,r6c45<>5
  6. Naked Triple: 3,4,9 in r9c178 => r9c245<>3, r9c459<>9
  7. Locked Candidates Type 2 (Claiming): 3 in r9 => r7c7<>3
  8. Hidden Pair: 2,4 in r4c45 => r4c45<>3, r4c45<>8, r4c45<>9
  9. Riga 4 / Colonna 6 → 8 (Hidden Single)
  10. Riga 6 / Colonna 6 → 5 (Hidden Single)
  11. Locked Candidates Type 1 (Pointing): 3 in b5 => r6c7<>3
  12. Uniqueness Test 4: 5/9 in r4c27,r5c27 => r45c7<>9
  13. Uniqueness Test 4: 4/9 in r7c17,r9c17 => r79c7<>9
  14. W-Wing: 6/9 in r1c8,r4c9 connected by 9 in r36c7 => r3c9,r4c8<>6
  15. Riga 4 / Colonna 9 → 6 (Hidden Single)
  16. Riga 1 / Colonna 8 → 6 (Hidden Single)
  17. Locked Candidates Type 1 (Pointing): 9 in b3 => r3c456<>9
  18. Riga 3 / Colonna 6 → 3 (Naked Single)
  19. Uniqueness Test 3: 6/8 in r3c45,r7c45 => r9c45<>1
  20. Uniqueness Test 4: 2/9 in r3c79,r7c79 => r7c9<>9
  21. Give Up: Don't know how to proceed!
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