Passi risolutivi (27)
Passo 1
Naked Singles
valore: 0
categoria doc: Getting_Started
Last candidate 4 in H4 changed to solution
Passo 2
Naked Singles
valore: 3.1
categoria doc: Getting_Started
Last candidate 1 in H6 changed to solution
Passo 3
Hidden Singles
valore: 5.5
categoria doc: Getting_Started
6 in D4 is last in column
6 in H2 is last in row
6 in J9 is last in column/box
7 in A3 is last in column/box
7 in F9 is last in row/column/box
7 in J5 is last in row/box
8 in F2 is last in row/box
Passo 4
Hidden Singles
valore: 4.5
categoria doc: Getting_Started
5 in D2 is last in column
5 in F4 is last in column
6 in A5 is last in row
6 in C3 is last in column/box
7 in B6 is last in row/column/box
8 in A1 is last in box
8 in G5 is last in column/box
Passo 5
Naked Singles
valore: 2
categoria doc: Getting_Started
Last candidate 5 in H1 changed to solution
Passo 6
Naked Singles
valore: 1.9
categoria doc: Getting_Started
Last candidate 8 in H8 changed to solution
Passo 7
Hidden Singles
valore: 3.3
categoria doc: Getting_Started
2 in E1 is last in box
3 in B4 is last in column
5 in A8 is last in column
5 in C5 is last in column/box
8 in B9 is last in row/column/box
8 in J3 is last in row/column/box
Passo 8
Hidden Singles
valore: 2.7
categoria doc: Getting_Started
1 in B2 is last in row
9 in G3 is last in column/box
9 in J4 is last in row
Passo 9
Naked Singles
valore: 1.3
categoria doc: Getting_Started
Last candidate 3 in C1 changed to solution
Last candidate 2 in G4 changed to solution
Last candidate 3 in J2 changed to solution
Passo 10
Naked Singles
valore: 1.1
categoria doc: Getting_Started
Last candidate 2 in A2 changed to solution
Last candidate 4 in G1 changed to solution
Passo 11
Naked Singles
valore: 1
categoria doc: Getting_Started
Last candidate 1 in J1 changed to solution
Passo 12
Naked Pair
valore: 9.2
categoria doc: Naked_Candidates
Naked Pair 2/4 on cells {B8|J8} means
- 2/4 can be removed from D8
- 2/4 can be removed from F8
Passo 13
Naked Pair
valore: 8.5
categoria doc: Naked_Candidates
Naked Pair 3/9 on cells {D8|F8} means
- 3 can be removed from D9
- 3 can be removed from E7
- 3 can be removed from E9
- 3/9 can be removed from F7
Passo 14
Hidden Singles
valore: 1.7
categoria doc: Getting_Started
3 in E3 is last in row
Passo 15
Naked Singles
valore: 0.8
categoria doc: Getting_Started
Last candidate 4 in D3 changed to solution
Passo 16
Naked Pair
valore: 7.4
categoria doc: Naked_Candidates
Naked Pair 1/2 on cells {C9|D9} means
- 1 can be removed from E9
Passo 17
Naked Pair
valore: 7
categoria doc: Naked_Candidates
Naked Pair 2/4 on cells {F7|J7} means
- 4 can be removed from A7
- 2 can be removed from C7
- 4 can be removed from E7
Passo 18
Pointing Pairs
valore: 20.2
categoria doc: Intersection_Removal
Pair: between Box 2 and Col 6:
- 9 can be removed from D6
- 9 can be removed from F6
Passo 19
W-Wing
valore: 33
categoria doc: W_Wings
W-Wing (single). Either there is a 2 in B5 or in F7. They are connected through 4 in A6/F6, therefore
- 2 can be removed from F5
Passo 20
Rectangle Elimination
valore: 32.3
categoria doc: Rectangle_Elimination
If +2[F6] then -2[C6] forcing +2[C9] which removes all 2s from box 6, so F6 cannot be 2
Passo 21
Hidden Singles
valore: 1.3
categoria doc: Getting_Started
2 in F7 is last in row
Passo 22
Naked Singles
valore: 0.6
categoria doc: Getting_Started
Last candidate 1 in D9 changed to solution
Last candidate 4 in J7 changed to solution
Passo 23
Naked Singles
valore: 0.5
categoria doc: Getting_Started
Last candidate 2 in C9 changed to solution
Last candidate 5 in E7 changed to solution
Last candidate 2 in J8 changed to solution
Passo 24
Naked Singles
valore: 0.4
categoria doc: Getting_Started
Last candidate 4 in B8 changed to solution
Last candidate 9 in C6 changed to solution
Last candidate 4 in E9 changed to solution
Last candidate 3 in G7 changed to solution
Passo 25
Naked Singles
valore: 0.3
categoria doc: Getting_Started
Last candidate 4 in A6 changed to solution
Last candidate 9 in A7 changed to solution
Last candidate 3 in A9 changed to solution
Last candidate 2 in B5 changed to solution
Last candidate 1 in C7 changed to solution
Last candidate 1 in E5 changed to solution
Last candidate 5 in G9 changed to solution
Passo 26
Naked Singles
valore: 0.1
categoria doc: Getting_Started
Last candidate 9 in D5 changed to solution
Last candidate 3 in F6 changed to solution
Passo 27
Naked Singles
valore: 0.1
categoria doc: Getting_Started
Last candidate 2 in D6 changed to solution
Last candidate 3 in D8 changed to solution
Last candidate 4 in F5 changed to solution
Last candidate 9 in F8 changed to solution