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File jsonD:\inetpub\webs\ruggeriinfo\public\sudoku\json\L3_04_02_2026_2026_02_11_07_37_19452443.json
File pdfD:/inetpub/webs/ruggeriinfo/public/sudoku/pdf/L3_04_02_2026_2026_02_11_07_37_19452443_7_1.pdf

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Sudoku Solve Path

GradoTough Livello4 (precedente: 4)
Punteggio finale7.1 Punteggio precedente203
Indizi24 # Passi30
Versione generatoreversion 3.76, 08-Feb-2026
Soluzione538914276247365819196872354325196748681547932479238165753629481812453697964781523
FileD:\inetpub\webs\ruggeriinfo\public\sudoku\json\L3_04_02_2026_2026_02_11_07_37_19452443.json

Passi risolutivi (30)

Passo 1 Naked Singles valore: 0 categoria doc: Getting_Started
Last candidate 8 in E2 changed to solution
Passo 2 Naked Singles valore: 2.8 categoria doc: Getting_Started
Last candidate 1 in E3 changed to solution
Passo 3 Naked Singles valore: 2.7 categoria doc: Getting_Started
Last candidate 5 in D3 changed to solution
Passo 4 Naked Singles valore: 2.7 categoria doc: Getting_Started
Last candidate 2 in D2 changed to solution
Passo 5 Naked Singles valore: 2.6 categoria doc: Getting_Started
Last candidate 7 in F2 changed to solution
Passo 6 Naked Singles valore: 2.5 categoria doc: Getting_Started
Last candidate 4 in F1 changed to solution
Passo 7 Hidden Singles valore: 4.8 categoria doc: Getting_Started
1 in C1 is last in row/column/box
2 in B1 is last in row/column/box
6 in J2 is last in column/box
Passo 8 Hidden Singles valore: 4.4 categoria doc: Getting_Started
5 in G2 is last in column/box
8 in A3 is last in box
8 in C4 is last in row
Passo 9 Hidden Singles valore: 4.1 categoria doc: Getting_Started
3 in G3 is last in box
7 in B3 is last in box
Passo 10 Naked Singles valore: 1.9 categoria doc: Getting_Started
Last candidate 9 in B9 changed to solution
Passo 11 Naked Singles valore: 1.8 categoria doc: Getting_Started
Last candidate 3 in B4 changed to solution
Passo 12 Naked Pair valore: 16.5 categoria doc: Naked_Candidates
Naked Pair 5/6 on cells {B5|B6} means
- 5 can be removed from C5
Passo 13 Naked Pair valore: 16 categoria doc: Naked_Candidates
Naked Pair 7/8 on cells {H1|H9} means
- 7 can be removed from H4
- 7 can be removed from H5
- 7/8 can be removed from H8
Passo 14 Hidden Pair valore: 31.4 categoria doc: Hidden_Candidates
Hidden Pair 2/7 in Box 8, on cells {G5|J4}
- removes 9 from G5
- removes 1 from J4
Passo 15 Pointing Pairs valore: 46.2 categoria doc: Intersection_Removal
Pair: between Box 8 and Col 6:
- 1 can be removed from D6
- 1 can be removed from F6
Passo 16 X-Wing valore: 90.8 categoria doc: X_Wing_Strategy
(Col->Row) 7 taken off C8, based on AJ48
(Col->Row) 7 taken off G8, based on AJ48
Passo 17 Unique Rectangle Type 1 valore: 59.4 categoria doc: Unique_Rectangle
Uniqueness Type 1 removing 7/8 at G9 because of G1,H1,H9
Last candidate 1 in G9 changed to solution
Passo 18 Naked Singles valore: 1.4 categoria doc: Getting_Started
Last candidate 9 in G6 changed to solution
Passo 19 Naked Singles valore: 1.3 categoria doc: Getting_Started
Last candidate 4 in A6 changed to solution Last candidate 4 in H4 changed to solution
Passo 20 Hidden Singles valore: 2.3 categoria doc: Getting_Started
1 in D4 is last in row
1 in F7 is last in column/box
1 in J6 is last in row/column/box
Passo 21 Naked Singles valore: 1.1 categoria doc: Getting_Started
Last candidate 2 in F4 changed to solution
Passo 22 Naked Singles valore: 1.1 categoria doc: Getting_Started
Last candidate 7 in J4 changed to solution
Passo 23 Naked Singles valore: 1 categoria doc: Getting_Started
Last candidate 9 in A4 changed to solution Last candidate 2 in G5 changed to solution
Passo 24 Naked Singles valore: 0.9 categoria doc: Getting_Started
Last candidate 3 in A2 changed to solution Last candidate 7 in C5 changed to solution Last candidate 8 in G8 changed to solution
Passo 25 Naked Singles valore: 0.8 categoria doc: Getting_Started
Last candidate 2 in A7 changed to solution Last candidate 9 in C2 changed to solution Last candidate 4 in C9 changed to solution Last candidate 7 in G1 changed to solution Last candidate 7 in H9 changed to solution
Passo 26 Naked Singles valore: 0.6 categoria doc: Getting_Started
Last candidate 7 in A8 changed to solution Last candidate 8 in D9 changed to solution Last candidate 8 in H1 changed to solution Last candidate 5 in J7 changed to solution
Passo 27 Naked Singles valore: 0.5 categoria doc: Getting_Started
Last candidate 3 in C7 changed to solution Last candidate 6 in D6 changed to solution Last candidate 2 in J8 changed to solution
Passo 28 Naked Singles valore: 0.4 categoria doc: Getting_Started
Last candidate 5 in B6 changed to solution Last candidate 5 in C8 changed to solution Last candidate 9 in E7 changed to solution Last candidate 3 in F5 changed to solution
Passo 29 Naked Singles valore: 0.2 categoria doc: Getting_Started
Last candidate 6 in B5 changed to solution Last candidate 4 in D8 changed to solution Last candidate 4 in E5 changed to solution Last candidate 8 in F6 changed to solution Last candidate 6 in F8 changed to solution Last candidate 5 in H5 changed to solution Last candidate 3 in H6 changed to solution Last candidate 6 in H7 changed to solution
Passo 30 Naked Singles valore: 0 categoria doc: Getting_Started
Last candidate 9 in D5 changed to solution Last candidate 3 in E8 changed to solution Last candidate 9 in H8 changed to solution