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File jsonD:\inetpub\webs\ruggeriinfo\public\sudoku\json\L3_25_03_2026_2026_04_22_15_43_5971412.json
File pdfD:/inetpub/webs/ruggeriinfo/public/sudoku/pdf/L3_25_03_2026_2026_04_22_15_43_5971412_7_6.pdf

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Sudoku Solve Path

GradoTough Livello4 (precedente: 4)
Punteggio finale7.6 Punteggio precedente134
Indizi26 # Passi24
Versione generatoreversion 3.91, 17-Apr-2026
Soluzione263198457795432681418675293382961745159784362674523918927856134831249576546317829
FileD:\inetpub\webs\ruggeriinfo\public\sudoku\json\L3_25_03_2026_2026_04_22_15_43_5971412.json

Passi risolutivi (24)

Passo 1 Naked Singles valore: 0 categoria doc: Getting_Started
Last candidate 4 in G9 changed to solution
Passo 2 Hidden Singles valore: 5 categoria doc: Getting_Started
2 in A1 is last in row/box
2 in G2 is last in row/box
4 in H5 is last in row/box
5 in B3 is last in row
5 in C6 is last in column/box
6 in B7 is last in column/box
Passo 3 Naked Singles valore: 2.3 categoria doc: Getting_Started
Last candidate 1 in H3 changed to solution
Passo 4 Naked Singles valore: 2.1 categoria doc: Getting_Started
Last candidate 3 in H2 changed to solution Last candidate 6 in J3 changed to solution
Passo 5 Naked Singles valore: 2 categoria doc: Getting_Started
Last candidate 5 in J1 changed to solution
Passo 6 Hidden Singles valore: 3.5 categoria doc: Getting_Started
5 in D9 is last in column
5 in H7 is last in row/box
6 in C4 is last in row/box
6 in F1 is last in row/column/box
6 in G6 is last in column
Passo 7 Hidden Singles valore: 3.1 categoria doc: Getting_Started
2 in D3 is last in row
2 in E9 is last in column/box
8 in G4 is last in row/box
Passo 8 Pointing Pairs valore: 42.9 categoria doc: Intersection_Removal
Pair: between Box 1 and Row C:
- 4 can be removed from C8
Passo 9 X-Wing valore: 82.5 categoria doc: X_Wing_Strategy
(Row->Col) 8 taken off A5, based on AF69
(Row->Col) 8 taken off F2, based on AF69
(Row->Col) 8 taken off F3, based on AF69
(Row->Col) 8 taken off F8, based on AF69
Passo 10 Y-Wing valore: 107.8 categoria doc: Y_Wing_Strategy
Y-Wing pattern. Hinge: D1 (3/4), wings D4 F3, therefore
- 9 can be removed from D2
- 9 can be removed from F6
Passo 11 Y-Wing valore: 105.6 categoria doc: Y_Wing_Strategy
Y-Wing pattern. Hinge: F6 (3/8), wings A6 D4, therefore
- 9 can be removed from A4
- 9 can be removed from B4
Passo 12 W-Wing valore: 65.3 categoria doc: W_Wings
W-Wing (single). Either there is a 8 in A6 or in C8. They are connected through 9 in H6/H8, therefore
- 8 can be removed from A9

Passo 13 Hidden Singles valore: 2.5 categoria doc: Getting_Started
8 in A6 is last in row
8 in F9 is last in column
Passo 14 Naked Singles valore: 1.2 categoria doc: Getting_Started
Last candidate 3 in F6 changed to solution
Passo 15 Naked Singles valore: 1.1 categoria doc: Getting_Started
Last candidate 9 in D4 changed to solution
Passo 16 Naked Singles valore: 1 categoria doc: Getting_Started
Last candidate 8 in E5 changed to solution
Passo 17 Naked Singles valore: 1 categoria doc: Getting_Started
Last candidate 9 in E3 changed to solution
Passo 18 Naked Singles valore: 0.9 categoria doc: Getting_Started
Last candidate 4 in F3 changed to solution
Passo 19 Naked Singles valore: 0.9 categoria doc: Getting_Started
Last candidate 8 in C3 changed to solution Last candidate 3 in D1 changed to solution
Passo 20 Naked Singles valore: 0.8 categoria doc: Getting_Started
Last candidate 9 in B2 changed to solution Last candidate 9 in C8 changed to solution Last candidate 1 in E1 changed to solution
Passo 21 Naked Singles valore: 0.6 categoria doc: Getting_Started
Last candidate 7 in A9 changed to solution Last candidate 3 in B5 changed to solution Last candidate 4 in C1 changed to solution Last candidate 1 in C2 changed to solution Last candidate 3 in E7 changed to solution Last candidate 7 in F2 changed to solution Last candidate 7 in H8 changed to solution
Passo 22 Naked Singles valore: 0.4 categoria doc: Getting_Started
Last candidate 4 in A7 changed to solution Last candidate 4 in B4 changed to solution Last candidate 8 in D2 changed to solution Last candidate 4 in D8 changed to solution Last candidate 1 in F8 changed to solution Last candidate 1 in G7 changed to solution Last candidate 9 in H6 changed to solution Last candidate 9 in J9 changed to solution
Passo 23 Naked Singles valore: 0.2 categoria doc: Getting_Started
Last candidate 1 in A4 changed to solution Last candidate 8 in B8 changed to solution Last candidate 7 in D7 changed to solution Last candidate 9 in F7 changed to solution Last candidate 3 in G8 changed to solution Last candidate 1 in J5 changed to solution Last candidate 7 in J6 changed to solution
Passo 24 Naked Singles valore: 0 categoria doc: Getting_Started
Last candidate 9 in A5 changed to solution Last candidate 3 in J4 changed to solution