Sudoku Solve Path

File json	D:\inetpub\webs\ruggeriinfo\public\sudoku\json\L3_07_04_2026_2026_05_03_12_27_54931773.json
File pdf	D:/inetpub/webs/ruggeriinfo/public/sudoku/pdf/L3_07_04_2026_2026_05_03_12_27_54931773_6_4.pdf

Grado	Tough	Livello	4 (precedente: 4)
Punteggio finale	6.4	Punteggio precedente	115
Indizi	23	# Passi	29
Versione generatore	version 3.94, 02-May-2026
Soluzione	456213987893754621172689543319578462268431795547962138934125876721846359685397214
File	D:\inetpub\webs\ruggeriinfo\public\sudoku\json\L3_07_04_2026_2026_05_03_12_27_54931773.json

Passi risolutivi (29)

Passo 1 Hidden Singles valore: 5.8 categoria doc: Getting_Started

2 in B8 is last in row/box
2 in E1 is last in column/box
2 in F6 is last in row
2 in J7 is last in column
5 in J3 is last in column/box

Passo 2 Hidden Singles valore: 5.2 categoria doc: Getting_Started

2 in G5 is last in row/column/box
8 in J2 is last in box
9 in A7 is last in box

Passo 3 Naked Singles valore: 2.4 categoria doc: Getting_Started

Last candidate 4 in D7 changed to solution Last candidate 7 in E7 changed to solution

Passo 4 Naked Singles valore: 2.2 categoria doc: Getting_Started

Last candidate 1 in F7 changed to solution Last candidate 3 in H7 changed to solution

Passo 5 Naked Singles valore: 2.1 categoria doc: Getting_Started

Last candidate 8 in F9 changed to solution

Passo 6 Naked Singles valore: 2.1 categoria doc: Getting_Started

Last candidate 9 in F4 changed to solution

Passo 7 Naked Singles valore: 2 categoria doc: Getting_Started

Last candidate 7 in F3 changed to solution

Passo 8 Naked Singles valore: 1.9 categoria doc: Getting_Started

Last candidate 4 in F2 changed to solution

Passo 9 Hidden Singles valore: 3.6 categoria doc: Getting_Started

4 in A1 is last in column/box
4 in J9 is last in column/box

Passo 10 Hidden Singles valore: 3.3 categoria doc: Getting_Started

1 in C1 is last in column/box
7 in A9 is last in row

Passo 11 Naked Singles valore: 1.5 categoria doc: Getting_Started

Last candidate 3 in C9 changed to solution

Passo 12 Naked Singles valore: 1.5 categoria doc: Getting_Started

Last candidate 1 in B9 changed to solution

Passo 13 Hidden Singles valore: 2.7 categoria doc: Getting_Started

1 in A5 is last in row/box
3 in D1 is last in column

Passo 14 Hidden Singles valore: 2.5 categoria doc: Getting_Started

3 in E5 is last in row/box

Passo 15 Naked Singles valore: 1.2 categoria doc: Getting_Started

Last candidate 9 in J5 changed to solution

Passo 16 Naked Singles valore: 1.1 categoria doc: Getting_Started

Last candidate 8 in C5 changed to solution Last candidate 6 in J1 changed to solution

Passo 17 Naked Singles valore: 1 categoria doc: Getting_Started

Last candidate 7 in H1 changed to solution Last candidate 1 in J8 changed to solution

Passo 18 Naked Singles valore: 0.9 categoria doc: Getting_Started

Last candidate 9 in G1 changed to solution Last candidate 3 in J4 changed to solution

Passo 19 Hidden Singles valore: 1.6 categoria doc: Getting_Started

1 in G4 is last in row/column/box
7 in G8 is last in row/column/box
8 in E3 is last in row

Passo 20 Naked Pair valore: 7.3 categoria doc: Naked_Candidates

Naked Pair 5/8 on cells {D4|D6} means
- 5 can be removed from D8

Passo 21 X-Cycle valore: 107.3 categoria doc: X_Cycles

X-CYCLE on 6 (Discontinuous Alternating Nice Loop, length 8):
+6[E9]-6[D8]+6[D3]-6[A3]+6[A6]-6[G6]+6[G9]-6[E9]
- Contradiction: When E9 is set to 6 the chain implies it cannot be 6 - it can be removed
Last candidate 5 in E9 changed to solution

Passo 22 Naked Singles valore: 0.7 categoria doc: Getting_Started

Last candidate 6 in G9 changed to solution

Passo 23 Naked Singles valore: 0.6 categoria doc: Getting_Started

Last candidate 5 in G6 changed to solution Last candidate 5 in H8 changed to solution

Passo 24 Naked Singles valore: 0.5 categoria doc: Getting_Started

Last candidate 8 in D6 changed to solution Last candidate 4 in H5 changed to solution

Passo 25 Naked Singles valore: 0.5 categoria doc: Getting_Started

Last candidate 5 in B5 changed to solution Last candidate 5 in D4 changed to solution Last candidate 6 in H6 changed to solution

Passo 26 Naked Singles valore: 0.4 categoria doc: Getting_Started

Last candidate 3 in A6 changed to solution Last candidate 7 in B4 changed to solution Last candidate 9 in C6 changed to solution Last candidate 8 in H4 changed to solution

Passo 27 Naked Singles valore: 0.2 categoria doc: Getting_Started

Last candidate 6 in A3 changed to solution Last candidate 9 in B2 changed to solution Last candidate 4 in B6 changed to solution Last candidate 6 in C4 changed to solution

Passo 28 Naked Singles valore: 0.1 categoria doc: Getting_Started

Last candidate 3 in B3 changed to solution Last candidate 7 in C2 changed to solution Last candidate 9 in D3 changed to solution Last candidate 6 in E2 changed to solution

Passo 29 Naked Singles valore: 0 categoria doc: Getting_Started

Last candidate 6 in D8 changed to solution Last candidate 9 in E8 changed to solution

PDF :::: Sudoku Solve Path

Sudoku Solve Path

Passi risolutivi (29)