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Sudoku Solve Path

GradoTough Livello4 (precedente: 4)
Punteggio finale6.2 Punteggio precedente100
Indizi24 # Passi20
Versione generatoreversion 4.21, 22-Jul-2026
Soluzione154832976736195284982467135573924618821653497649781352467519823395248761218376549
FileD:\inetpub\webs\ruggeriinfo\public\sudoku\json\L3_09_07_2026_2026_07_24_13_43_17704561.json

Passi risolutivi (20)

Passo 1 Naked Singles valore: 1 categoria doc: Getting_Started
Last candidate 5 in G4 changed to solution
Passo 2 Hidden Singles valore: 5.3 categoria doc: Getting_Started
1 in C7 is last in row/box
2 in D5 is last in row/box
2 in H4 is last in column
4 in F2 is last in column/box
4 in J8 is last in row
5 in A2 is last in row
5 in F8 is last in column/box
9 in A7 is last in row
Passo 3 Hidden Singles valore: 3.9 categoria doc: Getting_Started
2 in B7 is last in column/box
2 in C3 is last in row
4 in C4 is last in column
4 in H5 is last in row/box
5 in H3 is last in row/column/box
6 in J6 is last in row
8 in G7 is last in box
9 in F3 is last in row/box
9 in H2 is last in column
Passo 4 Naked Singles valore: 1.6 categoria doc: Getting_Started
Last candidate 7 in C6 changed to solution
Passo 5 Naked Singles valore: 1.5 categoria doc: Getting_Started
Last candidate 8 in C2 changed to solution
Passo 6 Naked Singles valore: 1.3 categoria doc: Getting_Started
Last candidate 6 in C5 changed to solution
Last candidate 1 in J2 changed to solution
Passo 7 Naked Singles valore: 1.2 categoria doc: Getting_Started
Last candidate 8 in A4 changed to solution
Last candidate 7 in G3 changed to solution
Last candidate 8 in J3 changed to solution
Passo 8 Naked Singles valore: 1 categoria doc: Getting_Started
Last candidate 6 in E4 changed to solution
Last candidate 3 in H1 changed to solution
Last candidate 2 in J1 changed to solution
Passo 9 Hidden Singles valore: 1.9 categoria doc: Getting_Started
4 in B9 is last in row/box
4 in E7 is last in column
Passo 10 Hidden Singles valore: 1.8 categoria doc: Getting_Started
8 in B8 is last in row/box
Passo 11 Hidden Singles valore: 1.6 categoria doc: Getting_Started
8 in D9 is last in row
Passo 12 Line/Unit Reduction valore: 30.3 categoria doc: Intersection_Removal
Line/Box Reduction: 1s in box 5 remove the following in the same box:
- 1 can be removed from E5
- 1 can be removed from E6
Passo 13 Chute Remote Pair valore: 37.1 categoria doc: Chute_Remote_Pairs
6 cannot be set in the yellow cells {D9,E9,F9} and with the Remote Pair in A8 and H7 it means:
- 7 can be removed from H8
Passo 14 Y-Wing valore: 56.1 categoria doc: Y_Wing_Strategy
Y-Wing pattern. Hinge: E3 (1/3), wings D2 E9, therefore
- 7 can be removed from D7
- 7 can be removed from D8
- 7 can be removed from E1
Last candidate 8 in E1 changed to solution
Passo 15 Naked Singles valore: 0.6 categoria doc: Getting_Started
Last candidate 5 in E5 changed to solution
Last candidate 6 in F1 changed to solution
Passo 16 Naked Singles valore: 0.4 categoria doc: Getting_Started
Last candidate 7 in B1 changed to solution
Last candidate 9 in B5 changed to solution
Last candidate 3 in E6 changed to solution
Last candidate 3 in F7 changed to solution
Passo 17 Naked Singles valore: 0.2 categoria doc: Getting_Started
Last candidate 3 in B2 changed to solution
Last candidate 5 in B6 changed to solution
Last candidate 6 in D7 changed to solution
Last candidate 1 in E3 changed to solution
Last candidate 1 in F6 changed to solution
Last candidate 1 in G5 changed to solution
Passo 18 Naked Singles valore: 0.1 categoria doc: Getting_Started
Last candidate 6 in B3 changed to solution
Last candidate 7 in D2 changed to solution
Last candidate 3 in D3 changed to solution
Last candidate 1 in D8 changed to solution
Last candidate 7 in E9 changed to solution
Last candidate 8 in F5 changed to solution
Last candidate 9 in G6 changed to solution
Last candidate 7 in H7 changed to solution
Passo 19 Naked Singles valore: 0 categoria doc: Getting_Started
Last candidate 6 in A9 changed to solution
Last candidate 6 in H8 changed to solution
Passo 20 Naked Singles valore: 0 categoria doc: Getting_Started
Last candidate 7 in A8 changed to solution
Last candidate 1 in H9 changed to solution