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Sudoku Solve Path

GradoTough Livello4 (precedente: 4)
Punteggio finale6.8 Punteggio precedente146
Indizi24 # Passi28
Versione generatoreversion 4.24, 18-Aug-2026
Soluzione157382694928476531643519287385164729476298153219753468761835942532941876894627315
FileD:\inetpub\webs\ruggeriinfo\public\sudoku\json\L3_31_07_2026_2026_08_21_15_25_22388847.json

Passi risolutivi (28)

Passo 1 Hidden Singles valore: 5.3 categoria doc: Getting_Started
5 in D3 is last in box
5 in E8 is last in row
8 in A5 is last in row
8 in C8 is last in column/box
8 in J1 is last in row/column/box
9 in B1 is last in row/box
Passo 2 Naked Singles valore: 1 categoria doc: Getting_Started
Last candidate 4 in J3 changed to solution
Passo 3 Naked Singles valore: 2.2 categoria doc: Getting_Started
Last candidate 1 in G3 changed to solution
Passo 4 Naked Singles valore: 2.1 categoria doc: Getting_Started
Last candidate 3 in C3 changed to solution
Last candidate 6 in G2 changed to solution
Passo 5 Naked Singles valore: 2 categoria doc: Getting_Started
Last candidate 7 in A3 changed to solution
Last candidate 5 in H1 changed to solution
Passo 6 Naked Singles valore: 2 categoria doc: Getting_Started
Last candidate 9 in F3 changed to solution
Passo 7 Hidden Singles valore: 3.8 categoria doc: Getting_Started
3 in A4 is last in row/box
4 in C2 is last in column/box
5 in C4 is last in column
Passo 8 Hidden Singles valore: 3.5 categoria doc: Getting_Started
3 in F6 is last in row/box
Passo 9 Hidden Pair valore: 32.7 categoria doc: Hidden_Candidates
Hidden Pair 4/6 in Box 5, on cells {D5|D6}
- removes 1/2/7/9 from D5
- removes 7/8 from D6
Passo 10 Hidden Singles valore: 3.2 categoria doc: Getting_Started
8 in D2 is last in row
8 in E6 is last in column/box
Passo 11 Hidden Singles valore: 3 categoria doc: Getting_Started
1 in D4 is last in row
Passo 12 Naked Pair valore: 13.9 categoria doc: Naked_Candidates
Naked Pair 4/6 on cells {D5|D6} means
- 4/6 can be removed from D7
- 4/6 can be removed from D8
- 4/6 can be removed from D9
Passo 13 Hidden Pair valore: 26.7 categoria doc: Hidden_Candidates
Hidden Pair 4/6 in Box 6, on cells {F7|F8}
- removes 2/7 from F7
- removes 2/7 from F8
Passo 14 Naked Pair valore: 12.9 categoria doc: Naked_Candidates
Naked Pair 4/6 on cells {A7|F7} means
- 6 can be removed from B7
- 6 can be removed from C7
- 4 can be removed from G7
Last candidate 2 in C7 changed to solution
Passo 15 Naked Singles valore: 1.1 categoria doc: Getting_Started
Last candidate 5 in B7 changed to solution
Passo 16 Hidden Singles valore: 2.2 categoria doc: Getting_Started
2 in B2 is last in row/box
2 in F1 is last in column
Passo 17 Naked Singles valore: 1 categoria doc: Getting_Started
Last candidate 7 in E2 changed to solution
Last candidate 7 in F4 changed to solution
Passo 18 Naked Singles valore: 0.9 categoria doc: Getting_Started
Last candidate 1 in F2 changed to solution
Last candidate 9 in H4 changed to solution
Passo 19 Naked Singles valore: 0.9 categoria doc: Getting_Started
Last candidate 2 in E4 changed to solution
Passo 20 Naked Singles valore: 0.8 categoria doc: Getting_Started
Last candidate 9 in E5 changed to solution
Passo 21 Hidden Pair valore: 16.2 categoria doc: Hidden_Candidates
Hidden Pair 2/3 in Col 5, on cells {G5|J5}
- removes 4 from G5
- removes 7 from J5
Passo 22 Naked Triple valore: 31.9 categoria doc: Naked_Candidates
Naked Triple 1/4/6 on cells {A9|B9|H9} means
- 4 can be removed from G9
Passo 23 Y-Wing valore: 61.6 categoria doc: Y_Wing_Strategy
Y-Wing pattern. Hinge: G8 (2/4), wings G6 J9, therefore
- 5 can be removed from G9
- 5 can be removed from J6
Last candidate 7 in J6 changed to solution
Passo 24 Naked Singles valore: 0.5 categoria doc: Getting_Started
Last candidate 6 in B6 changed to solution
Last candidate 4 in H5 changed to solution
Last candidate 3 in J7 changed to solution
Passo 25 Naked Singles valore: 0.3 categoria doc: Getting_Started
Last candidate 1 in B9 changed to solution
Last candidate 1 in C5 changed to solution
Last candidate 6 in D5 changed to solution
Last candidate 4 in D6 changed to solution
Last candidate 5 in G6 changed to solution
Last candidate 9 in G7 changed to solution
Last candidate 6 in H9 changed to solution
Last candidate 2 in J5 changed to solution
Passo 26 Naked Singles valore: 0.1 categoria doc: Getting_Started
Last candidate 4 in A9 changed to solution
Last candidate 7 in B5 changed to solution
Last candidate 6 in C1 changed to solution
Last candidate 7 in D7 changed to solution
Last candidate 3 in G5 changed to solution
Last candidate 2 in G9 changed to solution
Last candidate 7 in H8 changed to solution
Last candidate 5 in J9 changed to solution
Passo 27 Naked Singles valore: 0 categoria doc: Getting_Started
Last candidate 1 in A1 changed to solution
Last candidate 6 in A7 changed to solution
Last candidate 2 in D8 changed to solution
Last candidate 9 in D9 changed to solution
Last candidate 4 in G8 changed to solution
Passo 28 Naked Singles valore: 0 categoria doc: Getting_Started
Last candidate 4 in F7 changed to solution
Last candidate 6 in F8 changed to solution