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File jsonD:\inetpub\webs\ruggeriinfo\public\sudoku\json\L3_21_07_2026_2026_07_24_13_55_03484208.json
File pdfD:/inetpub/webs/ruggeriinfo/public/sudoku/pdf/L3_21_07_2026_2026_07_24_13_55_03484208_6_6.pdf

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Sudoku Solve Path

GradoTough Livello4 (precedente: 4)
Punteggio finale6.6 Punteggio precedente156
Indizi23 # Passi28
Versione generatoreversion 4.21, 22-Jul-2026
Soluzione183954726597621438462873951329418567856739214741562389678395142234187695915246873
FileD:\inetpub\webs\ruggeriinfo\public\sudoku\json\L3_21_07_2026_2026_07_24_13_55_03484208.json

Passi risolutivi (28)

Passo 1 Hidden Singles valore: 6.2 categoria doc: Getting_Started
3 in B8 is last in row/box
3 in J9 is last in column
4 in G8 is last in row/column/box
8 in A2 is last in row
Passo 2 Hidden Singles valore: 5.5 categoria doc: Getting_Started
3 in D1 is last in column
3 in H2 is last in row/box
9 in B2 is last in row
Passo 3 Hidden Singles valore: 4.9 categoria doc: Getting_Started
3 in E5 is last in row
3 in F7 is last in column/box
9 in D3 is last in box
Passo 4 Hidden Singles valore: 4.5 categoria doc: Getting_Started
8 in F8 is last in row/box
9 in E6 is last in row/box
Passo 5 Hidden Singles valore: 4.2 categoria doc: Getting_Started
6 in D8 is last in box
7 in E4 is last in row/box
Passo 6 Hidden Pair valore: 38.5 categoria doc: Hidden_Candidates
Hidden Pair 5/9 in Box 3, on cells {C7|C8}
- removes 1/7 from C7
- removes 1/2/7 from C8
Passo 7 Hidden Singles valore: 3.7 categoria doc: Getting_Started
7 in C5 is last in row
Passo 8 Hidden Singles valore: 3.5 categoria doc: Getting_Started
8 in C4 is last in row/box
Passo 9 Naked Singles valore: 1.6 categoria doc: Getting_Started
Last candidate 1 in H4 changed to solution
Passo 10 Naked Singles valore: 1.5 categoria doc: Getting_Started
Last candidate 7 in H6 changed to solution
Passo 11 Naked Singles valore: 1.5 categoria doc: Getting_Started
Last candidate 9 in H8 changed to solution
Passo 12 Naked Singles valore: 1.4 categoria doc: Getting_Started
Last candidate 5 in C8 changed to solution
Last candidate 8 in H5 changed to solution
Passo 13 Naked Singles valore: 1.3 categoria doc: Getting_Started
Last candidate 9 in C7 changed to solution
Last candidate 1 in E8 changed to solution
Passo 14 Naked Singles valore: 1.2 categoria doc: Getting_Started
Last candidate 5 in D7 changed to solution
Last candidate 5 in E2 changed to solution
Passo 15 Hidden Singles valore: 2.3 categoria doc: Getting_Started
4 in A6 is last in box
9 in G5 is last in column/box
9 in J1 is last in row
Passo 16 Hidden Singles valore: 2.1 categoria doc: Getting_Started
4 in C1 is last in column
Passo 17 Naked Pair valore: 9.8 categoria doc: Naked_Candidates
Naked Pair 1/2 on cells {C3|F3} means
- 1 can be removed from G3
- 1 can be removed from J3
Passo 18 Pointing Pairs valore: 28.9 categoria doc: Intersection_Removal
Pair: between Box 1 and Row C:
- 2 can be removed from C9
Passo 19 Y-Wing valore: 73.7 categoria doc: Y_Wing_Strategy
Y-Wing pattern. Hinge: J8 (2/7), wings G9 J2, therefore
- 1 can be removed from G1
- 1 can be removed from G2
- 1 can be removed from J7
Last candidate 6 in G1 changed to solution
Passo 20 Naked Singles valore: 0.8 categoria doc: Getting_Started
Last candidate 1 in A1 changed to solution
Last candidate 7 in G2 changed to solution
Passo 21 Naked Singles valore: 0.6 categoria doc: Getting_Started
Last candidate 7 in A7 changed to solution
Last candidate 2 in C3 changed to solution
Last candidate 1 in J2 changed to solution
Passo 22 Naked Singles valore: 0.5 categoria doc: Getting_Started
Last candidate 2 in A8 changed to solution
Last candidate 6 in C2 changed to solution
Last candidate 1 in F3 changed to solution
Last candidate 8 in J7 changed to solution
Passo 23 Naked Singles valore: 0.4 categoria doc: Getting_Started
Last candidate 6 in A9 changed to solution
Last candidate 1 in C9 changed to solution
Last candidate 1 in G7 changed to solution
Last candidate 5 in J3 changed to solution
Last candidate 7 in J8 changed to solution
Passo 24 Naked Singles valore: 0.3 categoria doc: Getting_Started
Last candidate 8 in G3 changed to solution
Last candidate 2 in G9 changed to solution
Last candidate 2 in J4 changed to solution
Passo 25 Naked Singles valore: 0.2 categoria doc: Getting_Started
Last candidate 6 in B4 changed to solution
Last candidate 4 in D4 changed to solution
Last candidate 5 in G6 changed to solution
Passo 26 Naked Singles valore: 0.1 categoria doc: Getting_Started
Last candidate 2 in D2 changed to solution
Last candidate 5 in F4 changed to solution
Last candidate 2 in F6 changed to solution
Passo 27 Naked Singles valore: 0 categoria doc: Getting_Started
Last candidate 1 in B6 changed to solution
Last candidate 1 in D5 changed to solution
Last candidate 4 in F2 changed to solution
Last candidate 6 in F5 changed to solution
Passo 28 Naked Singles valore: 0 categoria doc: Getting_Started
Last candidate 2 in B5 changed to solution