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File jsonD:\inetpub\webs\ruggeriinfo\public\sudoku\json\L3_17_01_2026_2026_02_11_07_28_20145747.json
File pdfD:/inetpub/webs/ruggeriinfo/public/sudoku/pdf/L3_17_01_2026_2026_02_11_07_28_20145747_7_2.pdf

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Sudoku Solve Path

GradoTough Livello4 (precedente: 4)
Punteggio finale7.2 Punteggio precedente161
Indizi24 # Passi29
Versione generatoreversion 3.76, 08-Feb-2026
Soluzione927541863586327149431689527195476382763892415842135796319764258258913674674258931
FileD:\inetpub\webs\ruggeriinfo\public\sudoku\json\L3_17_01_2026_2026_02_11_07_28_20145747.json

Passi risolutivi (29)

Passo 1 Naked Singles valore: 0 categoria doc: Getting_Started
Last candidate 9 in E5 changed to solution
Passo 2 Naked Singles valore: 2.8 categoria doc: Getting_Started
Last candidate 2 in E6 changed to solution
Passo 3 Naked Singles valore: 2.8 categoria doc: Getting_Started
Last candidate 6 in D6 changed to solution
Passo 4 Naked Singles valore: 2.7 categoria doc: Getting_Started
Last candidate 1 in F4 changed to solution
Passo 5 Hidden Singles valore: 4.9 categoria doc: Getting_Started
1 in B7 is last in box
1 in J9 is last in column
2 in C8 is last in row/box
6 in J1 is last in column/box
9 in A1 is last in row
Passo 6 Hidden Singles valore: 4.2 categoria doc: Getting_Started
1 in D1 is last in column
1 in G2 is last in row/box
2 in G7 is last in row/box
7 in A3 is last in row
Passo 7 Hidden Singles valore: 3.7 categoria doc: Getting_Started
1 in C3 is last in row/column/box
Passo 8 Naked Pair valore: 17.6 categoria doc: Naked_Candidates
Naked Pair 4/5 on cells {J3|J5} means
- 4/5 can be removed from J2
- 4 can be removed from J7
- 4/5 can be removed from J8
Last candidate 7 in J2 changed to solution
Passo 9 Naked Pair valore: 16.5 categoria doc: Naked_Candidates
Naked Pair 3/9 on cells {J7|J8} means
- 3/9 can be removed from H8
- 3 can be removed from H9
Passo 10 Hidden Pair valore: 32.2 categoria doc: Hidden_Candidates
Hidden Pair 3/9 in Box 8, on cells {H4|H6}
- removes 7 from H4
- removes 4/7 from H6
Passo 11 Hidden Singles valore: 3.2 categoria doc: Getting_Started
7 in H8 is last in row
Passo 12 Naked Pair valore: 15.3 categoria doc: Naked_Candidates
Naked Pair 3/9 on cells {C6|H6} means
- 3 can be removed from B6
Passo 13 Pointing Pairs valore: 45.4 categoria doc: Intersection_Removal
Pair: between Box 1 and Col 2:
- 3 can be removed from D2
Passo 14 Pointing Pairs valore: 45 categoria doc: Intersection_Removal
Pair: between Box 3 and Row A:
- 6 can be removed from A5
Passo 15 Line/Box Reduction valore: 59.4 categoria doc: Intersection_Removal
Triple: between Row A and Box 3:
- 3 can be removed from B8
Passo 16 Unique Rectangle Type 1 valore: 58.3 categoria doc: Unique_Rectangle
Uniqueness Type 1 removing 3/9 at C4 because of C6,H6,H4
Last candidate 6 in C4 changed to solution
Passo 17 Naked Singles valore: 1.4 categoria doc: Getting_Started
Last candidate 8 in C5 changed to solution Last candidate 7 in G4 changed to solution
Passo 18 Naked Singles valore: 1.3 categoria doc: Getting_Started
Last candidate 4 in A5 changed to solution Last candidate 3 in B4 changed to solution Last candidate 3 in C2 changed to solution Last candidate 4 in G6 changed to solution
Passo 19 Naked Singles valore: 1.1 categoria doc: Getting_Started
Last candidate 7 in B6 changed to solution Last candidate 9 in C6 changed to solution Last candidate 5 in G8 changed to solution Last candidate 9 in H4 changed to solution Last candidate 5 in J5 changed to solution
Passo 20 Naked Singles valore: 1 categoria doc: Getting_Started
Last candidate 6 in G5 changed to solution Last candidate 3 in H6 changed to solution Last candidate 4 in H9 changed to solution Last candidate 4 in J3 changed to solution
Passo 21 Hidden Singles valore: 1.6 categoria doc: Getting_Started
4 in B8 is last in row/box
4 in E7 is last in row
4 in F2 is last in column/box
Passo 22 Hidden Singles valore: 1.3 categoria doc: Getting_Started
7 in E1 is last in row
7 in F7 is last in column/box
9 in D2 is last in column/box
Passo 23 Naked Singles valore: 0.6 categoria doc: Getting_Started
Last candidate 8 in F1 changed to solution
Passo 24 Naked Singles valore: 0.5 categoria doc: Getting_Started
Last candidate 5 in B1 changed to solution Last candidate 2 in F3 changed to solution
Passo 25 Naked Singles valore: 0.4 categoria doc: Getting_Started
Last candidate 8 in B2 changed to solution Last candidate 6 in F9 changed to solution
Passo 26 Naked Singles valore: 0.4 categoria doc: Getting_Started
Last candidate 3 in A9 changed to solution Last candidate 9 in F8 changed to solution Last candidate 5 in H2 changed to solution
Passo 27 Naked Singles valore: 0.2 categoria doc: Getting_Started
Last candidate 8 in A7 changed to solution Last candidate 5 in E9 changed to solution Last candidate 8 in H3 changed to solution Last candidate 3 in J8 changed to solution
Passo 28 Naked Singles valore: 0.1 categoria doc: Getting_Started
Last candidate 6 in A8 changed to solution Last candidate 3 in D7 changed to solution Last candidate 8 in D8 changed to solution Last candidate 2 in D9 changed to solution Last candidate 3 in E3 changed to solution Last candidate 9 in J7 changed to solution
Passo 29 Naked Singles valore: 0 categoria doc: Getting_Started
Last candidate 5 in D3 changed to solution