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Sudoku Solve Path

GradoTough Livello4 (precedente: 4)
Punteggio finale6.7 Punteggio precedente134
Indizi23 # Passi30
Versione generatoreversion 4.25, 25-Aug-2026
Soluzione978423516264157839531869472783641925456932781192578643627385194315794268849216357
FileD:\inetpub\webs\ruggeriinfo\public\sudoku\json\L3_01_09_2026_2026_09_02_13_24_37508141.json

Passi risolutivi (30)

Passo 1 Hidden Singles valore: 6.1 categoria doc: Getting_Started
4 in G9 is last in column/box
9 in J3 is last in column/box
Passo 2 Hidden Singles valore: 5.5 categoria doc: Getting_Started
2 in C9 is last in column
2 in G2 is last in row
2 in H7 is last in box
4 in H6 is last in column/box
9 in G8 is last in row/box
Passo 3 Hidden Singles valore: 4.8 categoria doc: Getting_Started
2 in A5 is last in row/box
6 in G1 is last in row
6 in H8 is last in column/box
7 in H4 is last in row/box
Passo 4 Naked Singles valore: 2.1 categoria doc: Getting_Started
Last candidate 5 in H3 changed to solution
Passo 5 Naked Singles valore: 2 categoria doc: Getting_Started
Last candidate 8 in A3 changed to solution
Last candidate 2 in F3 changed to solution
Passo 6 Hidden Singles valore: 3.6 categoria doc: Getting_Started
1 in A8 is last in row
1 in J5 is last in box
2 in E6 is last in row/column/box
6 in D4 is last in row
8 in J1 is last in column/box
Passo 7 Hidden Singles valore: 3.1 categoria doc: Getting_Started
4 in E1 is last in column
4 in J2 is last in row/box
6 in C5 is last in column/box
Passo 8 Naked Singles valore: 1.4 categoria doc: Getting_Started
Last candidate 6 in E3 changed to solution
Passo 9 Naked Singles valore: 1.4 categoria doc: Getting_Started
Last candidate 4 in B3 changed to solution
Passo 10 Hidden Singles valore: 2.7 categoria doc: Getting_Started
6 in B2 is last in row/column/box
Passo 11 Pointing Pairs valore: 39.6 categoria doc: Intersection_Removal
Pair: between Box 1 and Row C:
- 3 can be removed from C8
Passo 12 Pointing Pairs valore: 38.8 categoria doc: Intersection_Removal
Pair: between Box 6 and Row E:
- 8 can be removed from E4
- 8 can be removed from E5
Last candidate 3 in E5 changed to solution
Passo 13 Naked Singles valore: 1.2 categoria doc: Getting_Started
Last candidate 8 in G5 changed to solution
Passo 14 Naked Singles valore: 1.1 categoria doc: Getting_Started
Last candidate 5 in G6 changed to solution
Passo 15 Naked Singles valore: 1.1 categoria doc: Getting_Started
Last candidate 3 in G4 changed to solution
Passo 16 Hidden Singles valore: 2.1 categoria doc: Getting_Started
3 in F9 is last in row/box
Passo 17 Naked Singles valore: 0.9 categoria doc: Getting_Started
Last candidate 9 in B9 changed to solution
Passo 18 Naked Pair valore: 9.1 categoria doc: Naked_Candidates
Naked Pair 1/5 on cells {D9|E9} means
- 5 can be removed from D7
- 5 can be removed from E7
- 5 can be removed from E8
Passo 19 Chute Remote Pair valore: 44.7 categoria doc: Chute_Remote_Pairs
5 cannot be set in the yellow cells {D4,D5,D6} and with the Remote Pair in E9 and F1 it means:
- 1 can be removed from E2
Passo 20 Hidden Singles valore: 1.8 categoria doc: Getting_Started
1 in H2 is last in column
Passo 21 Naked Singles valore: 0.8 categoria doc: Getting_Started
Last candidate 3 in H1 changed to solution
Passo 22 Hidden Singles valore: 1.6 categoria doc: Getting_Started
3 in C2 is last in row/column/box
Passo 23 W-Wing valore: 37.8 categoria doc: W_Wings
W-Wing (single). Either there is a 5 in A7 or in C1. They are connected through 7 in D7/D1, therefore
- 5 can be removed from A2
- 5 can be removed from C8
Last candidate 7 in A2 changed to solution
Passo 24 Naked Singles valore: 0.6 categoria doc: Getting_Started
Last candidate 5 in A7 changed to solution
Last candidate 5 in C1 changed to solution
Last candidate 5 in E2 changed to solution
Passo 25 Naked Singles valore: 0.5 categoria doc: Getting_Started
Last candidate 1 in E9 changed to solution
Last candidate 1 in F1 changed to solution
Last candidate 3 in J7 changed to solution
Passo 26 Naked Singles valore: 0.3 categoria doc: Getting_Started
Last candidate 7 in D1 changed to solution
Last candidate 5 in D9 changed to solution
Last candidate 9 in E4 changed to solution
Last candidate 8 in F6 changed to solution
Last candidate 5 in J8 changed to solution
Passo 27 Naked Singles valore: 0.2 categoria doc: Getting_Started
Last candidate 8 in C4 changed to solution
Last candidate 1 in D6 changed to solution
Last candidate 9 in D7 changed to solution
Last candidate 5 in F4 changed to solution
Passo 28 Naked Singles valore: 0.1 categoria doc: Getting_Started
Last candidate 1 in B4 changed to solution
Last candidate 7 in B6 changed to solution
Last candidate 7 in C8 changed to solution
Passo 29 Naked Singles valore: 0 categoria doc: Getting_Started
Last candidate 8 in B7 changed to solution
Last candidate 9 in C6 changed to solution
Last candidate 8 in E8 changed to solution
Passo 30 Naked Singles valore: 0 categoria doc: Getting_Started
Last candidate 3 in B8 changed to solution
Last candidate 7 in E7 changed to solution