🧩 Sudoku Solve Path Explorer

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File jsonD:\inetpub\webs\ruggeriinfo\public\sudoku\json\L3_24_08_2026_2026_09_02_13_16_46365387.json
File pdfD:/inetpub/webs/ruggeriinfo/public/sudoku/pdf/L3_24_08_2026_2026_09_02_13_16_46365387_5_9.pdf

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Sudoku Solve Path

GradoTough Livello4 (precedente: 4)
Punteggio finale5.9 Punteggio precedente168
Indizi23 # Passi24
Versione generatoreversion 4.25, 25-Aug-2026
Soluzione417236895986547231235981476362495187598172364741863529159628743623714958874359612
FileD:\inetpub\webs\ruggeriinfo\public\sudoku\json\L3_24_08_2026_2026_09_02_13_16_46365387.json

Passi risolutivi (24)

Passo 1 Naked Singles valore: 2 categoria doc: Getting_Started
Last candidate 1 in D7 changed to solution
Last candidate 2 in E6 changed to solution
Passo 2 Naked Singles valore: 3 categoria doc: Getting_Started
Last candidate 5 in F7 changed to solution
Last candidate 2 in F8 changed to solution
Last candidate 8 in G6 changed to solution
Passo 3 Naked Singles valore: 2.6 categoria doc: Getting_Started
Last candidate 3 in E7 changed to solution
Last candidate 9 in J6 changed to solution
Passo 4 Naked Singles valore: 2.4 categoria doc: Getting_Started
Last candidate 6 in A6 changed to solution
Last candidate 4 in E9 changed to solution
Last candidate 7 in G7 changed to solution
Passo 5 Naked Singles valore: 2.3 categoria doc: Getting_Started
Last candidate 1 in E4 changed to solution
Passo 6 Naked Singles valore: 2.1 categoria doc: Getting_Started
Last candidate 7 in E5 changed to solution
Last candidate 6 in F5 changed to solution
Last candidate 3 in J4 changed to solution
Passo 7 Naked Singles valore: 2 categoria doc: Getting_Started
Last candidate 1 in F3 changed to solution
Passo 8 Hidden Singles valore: 3.7 categoria doc: Getting_Started
4 in B5 is last in row/box
4 in D4 is last in column
4 in G8 is last in row
4 in J3 is last in column/box
9 in H7 is last in row/box
Passo 9 Naked Singles valore: 1.5 categoria doc: Getting_Started
Last candidate 8 in A7 changed to solution
Last candidate 9 in D5 changed to solution
Last candidate 1 in J8 changed to solution
Passo 10 Naked Singles valore: 1.3 categoria doc: Getting_Started
Last candidate 3 in G9 changed to solution
Last candidate 5 in J5 changed to solution
Last candidate 6 in J7 changed to solution
Passo 11 Naked Singles valore: 1.2 categoria doc: Getting_Started
Last candidate 8 in H9 changed to solution
Last candidate 8 in J1 changed to solution
Passo 12 Naked Singles valore: 1.1 categoria doc: Getting_Started
Last candidate 5 in E1 changed to solution
Last candidate 7 in J2 changed to solution
Passo 13 Naked Singles valore: 1 categoria doc: Getting_Started
Last candidate 8 in E3 changed to solution
Passo 14 Hidden Singles valore: 1.9 categoria doc: Getting_Started
5 in G2 is last in row/box
8 in B2 is last in row
8 in C5 is last in column/box
Passo 15 Hidden Singles valore: 1.7 categoria doc: Getting_Started
3 in A5 is last in column/box
Passo 16 Hidden Pair valore: 14.9 categoria doc: Hidden_Candidates
Hidden Pair 5/7 in Box 1, on cells {A3|C3}
- removes 2 from A3
- removes 2/3/6 from C3
Passo 17 Unique Rectangle Type 1 valore: 28.6 categoria doc: Unique_Rectangle
Uniqueness Type 1 removing 1/2 at H1 because of G1,G5,H5
Last candidate 6 in H1 changed to solution
Passo 18 Naked Pair valore: 6.2 categoria doc: Naked_Candidates
Naked Pair 2/9 on cells {C1|C4} means
- 2 can be removed from C2
- 9 can be removed from C8
Passo 19 Bi-value Universal Grave valore: 35.5 categoria doc: BUG
BUG+1 found in H2, 2 must be the solution

All other incomplete cells contain two candidates apart from H2. Other candidates in H2 would lead to zero, two or more solutions so they can be removed.
Last candidate 2 in H2 changed to solution
Passo 20 Naked Singles valore: 0.4 categoria doc: Getting_Started
Last candidate 1 in A2 changed to solution
Last candidate 6 in D2 changed to solution
Last candidate 1 in G1 changed to solution
Last candidate 3 in H3 changed to solution
Last candidate 1 in H5 changed to solution
Passo 21 Naked Singles valore: 0.2 categoria doc: Getting_Started
Last candidate 5 in A9 changed to solution
Last candidate 9 in B1 changed to solution
Last candidate 6 in B3 changed to solution
Last candidate 3 in C2 changed to solution
Last candidate 2 in D3 changed to solution
Last candidate 2 in G5 changed to solution
Passo 22 Naked Singles valore: 0.1 categoria doc: Getting_Started
Last candidate 7 in A3 changed to solution
Last candidate 3 in B8 changed to solution
Last candidate 1 in B9 changed to solution
Last candidate 2 in C1 changed to solution
Last candidate 7 in C8 changed to solution
Last candidate 6 in C9 changed to solution
Passo 23 Naked Singles valore: 0 categoria doc: Getting_Started
Last candidate 9 in A8 changed to solution
Last candidate 5 in C3 changed to solution
Last candidate 9 in C4 changed to solution
Passo 24 Naked Singles valore: 0 categoria doc: Getting_Started
Last candidate 2 in A4 changed to solution