Passi risolutivi (21)
Passo 1
Hidden Singles
valore: 5.7
categoria doc: Getting_Started
3 in G6 is last in column/box
4 in E5 is last in row/column/box
8 in G8 is last in column/box
8 in J1 is last in row
Passo 2
Hidden Singles
valore: 5
categoria doc: Getting_Started
7 in G4 is last in row/box
8 in C5 is last in column
8 in E3 is last in column/box
8 in F4 is last in row
Passo 3
Hidden Singles
valore: 4.8
categoria doc: Getting_Started
5 in E4 is last in box
Passo 4
Naked Pair
valore: 22.6
categoria doc: Naked_Candidates
Naked Pair 3/6 on cells {A1|E1} means
- 3/6 can be removed from C1
- 3/6 can be removed from F1
- 6 can be removed from G1
Last candidate 2 in F1 changed to solution
Passo 5
Pointing Pairs
valore: 64.4
categoria doc: Intersection_Removal
Pair: between Box 1 and Row C:
- 5 can be removed from C7
- 5 can be removed from C8
- 5 can be removed from C9
Passo 6
Pointing Pairs
valore: 63.5
categoria doc: Intersection_Removal
Triple: between Box 5 and Col 6:
- 6 can be removed from A6
- 6 can be removed from C6
Passo 7
Pointing Pairs
valore: 62.7
categoria doc: Intersection_Removal
Pair: between Box 4 and Col 2:
- 7 can be removed from B2
- 7 can be removed from C2
Passo 8
Pointing Pairs
valore: 61.9
categoria doc: Intersection_Removal
Triple: between Box 4 and Col 2:
- 9 can be removed from G2
- 9 can be removed from H2
Passo 9
Pointing Pairs
valore: 61.5
categoria doc: Intersection_Removal
Pair: between Box 8 and Col 5:
- 9 can be removed from A5
Last candidate 6 in A5 changed to solution
Passo 10
Naked Singles
valore: 1.8
categoria doc: Getting_Started
Last candidate 3 in A1 changed to solution
Last candidate 6 in E1 changed to solution
Passo 11
Line/Unit Reduction
valore: 71
categoria doc: Intersection_Removal
Line/Box Reduction: 5s in box 9 remove the following in the same box:
- 5 can be removed from G9
- 5 can be removed from H8
- 5 can be removed from J9
Last candidate 6 in J9 changed to solution
Passo 12
Naked Singles
valore: 1.6
categoria doc: Getting_Started
Last candidate 4 in G9 changed to solution
Last candidate 1 in G1 changed to solution
Passo 13
Naked Singles
valore: 1.5
categoria doc: Getting_Started
Last candidate 4 in C1 changed to solution
Passo 14
Hidden Singles
valore: 2.8
categoria doc: Getting_Started
4 in B8 is last in row/column/box
4 in H2 is last in row/column/box
Passo 15
Hidden Singles
valore: 2.8
categoria doc: Getting_Started
7 in B3 is last in row
Passo 16
Naked Pair
valore: 13.1
categoria doc: Naked_Candidates
Naked Pair 7/9 on cells {D2|D9} means
- 9 can be removed from D4
- 9 can be removed from D6
- 7 can be removed from D8
Passo 17
Hidden Singles
valore: 2.6
categoria doc: Getting_Started
9 in C4 is last in column
Passo 18
Naked Singles
valore: 1
categoria doc: Getting_Started
Last candidate 7 in A6 changed to solution
Last candidate 5 in A8 changed to solution
Last candidate 9 in A9 changed to solution
Last candidate 7 in D9 changed to solution
Last candidate 3 in C9 changed to solution
Last candidate 9 in D2 changed to solution
Last candidate 3 in F2 changed to solution
Last candidate 6 in F8 changed to solution
Last candidate 5 in F9 changed to solution
Passo 19
Naked Singles
valore: 0.6
categoria doc: Getting_Started
Last candidate 1 in D8 changed to solution
Last candidate 7 in E2 changed to solution
Last candidate 3 in E8 changed to solution
Last candidate 9 in F6 changed to solution
Last candidate 2 in H8 changed to solution
Last candidate 7 in C8 changed to solution
Last candidate 2 in D4 changed to solution
Last candidate 6 in D6 changed to solution
Last candidate 1 in E6 changed to solution
Last candidate 9 in E7 changed to solution
Last candidate 5 in G7 changed to solution
Last candidate 3 in H7 changed to solution
Last candidate 1 in J4 changed to solution
Passo 20
Naked Singles
valore: 0.3
categoria doc: Getting_Started
Last candidate 2 in C6 changed to solution
Last candidate 6 in C7 changed to solution
Last candidate 1 in B5 changed to solution
Last candidate 2 in B7 changed to solution
Last candidate 5 in C3 changed to solution
Last candidate 9 in H3 changed to solution
Last candidate 5 in H5 changed to solution
Last candidate 2 in J5 changed to solution
Passo 21
Naked Singles
valore: 0
categoria doc: Getting_Started
Last candidate 6 in B2 changed to solution
Last candidate 1 in C2 changed to solution
Last candidate 2 in G2 changed to solution
Last candidate 6 in G3 changed to solution
Last candidate 9 in G5 changed to solution
Last candidate 5 in J2 changed to solution