Passi risolutivi (30)
Passo 1
Naked Singles
valore: 0
categoria doc: Getting_Started
Last candidate 7 in G7 changed to solution
Passo 2
Hidden Singles
valore: 5.4
categoria doc: Getting_Started
1 in J6 is last in column/box
5 in A5 is last in row/column/box
5 in H8 is last in row
7 in H2 is last in column/box
Passo 3
Naked Singles
valore: 2.5
categoria doc: Getting_Started
Last candidate 2 in H4 changed to solution
Last candidate 4 in J7 changed to solution
Passo 4
Naked Singles
valore: 2.3
categoria doc: Getting_Started
Last candidate 8 in H5 changed to solution
Passo 5
Naked Singles
valore: 2.3
categoria doc: Getting_Started
Last candidate 1 in H9 changed to solution
Last candidate 7 in J5 changed to solution
Passo 6
Naked Singles
valore: 2.2
categoria doc: Getting_Started
Last candidate 9 in J4 changed to solution
Passo 7
Hidden Singles
valore: 3.9
categoria doc: Getting_Started
5 in D7 is last in column/box
7 in C6 is last in row/box
7 in E9 is last in row
7 in F4 is last in column
8 in B8 is last in column
8 in D6 is last in column/box
Passo 8
Hidden Singles
valore: 3.4
categoria doc: Getting_Started
2 in C5 is last in row/box
2 in F6 is last in column
Passo 9
Naked Pair
valore: 15.1
categoria doc: Naked_Candidates
Naked Pair 3/9 on cells {A6|A7} means
- 3 can be removed from A1
- 9 can be removed from A3
- 3 can be removed from A4
- 3/9 can be removed from A9
Passo 10
Naked Pair
valore: 14.7
categoria doc: Naked_Candidates
Naked Pair 4/6 on cells {A4|A9} means
- 4/6 can be removed from A1
- 6 can be removed from A3
Passo 11
Naked Pair
valore: 14.6
categoria doc: Naked_Candidates
Naked Pair 3/9 on cells {A6|B6} means
- 3 can be removed from B5
Passo 12
Naked Pair
valore: 14.3
categoria doc: Naked_Candidates
Naked Pair 4/6 on cells {A9|C8} means
- 4/6 can be removed from C9
Passo 13
Naked Pair
valore: 13.8
categoria doc: Naked_Candidates
Naked Pair 6/9 on cells {B3|C3} means
- 9 can be removed from B2
- 6 can be removed from C1
- 9 can be removed from E3
- 6 can be removed from F3
Passo 14
Naked Pair
valore: 13.6
categoria doc: Naked_Candidates
Naked Pair 2/8 on cells {G9|J9} means
- 2 can be removed from D9
Passo 15
W-Wing
valore: 67.4
categoria doc: W_Wings
W-Wing (single). Either there is a 3 in B2 or in D4. They are connected through 4 in B5/A4, therefore
- 3 can be removed from D2
Passo 16
W-Wing
valore: 66.7
categoria doc: W_Wings
W-Wing (single). Either there is a 3 in C1 or in E5. They are connected through 4 in B2/B5, therefore
- 3 can be removed from E1
Passo 17
Rectangle Elimination
valore: 66
categoria doc: Rectangle_Elimination
If +4[D2] then -4[B2] forcing +4[B5] which removes all 4s from box 5, so D2 cannot be 4
Last candidate 9 in D2 changed to solution
Passo 18
Hidden Singles
valore: 2.5
categoria doc: Getting_Started
9 in C9 is last in column
9 in E7 is last in row/box
Passo 19
Naked Singles
valore: 1.2
categoria doc: Getting_Started
Last candidate 3 in A7 changed to solution
Last candidate 6 in C3 changed to solution
Passo 20
Naked Singles
valore: 1.1
categoria doc: Getting_Started
Last candidate 9 in A6 changed to solution
Last candidate 9 in B3 changed to solution
Last candidate 4 in C8 changed to solution
Passo 21
Naked Singles
valore: 1
categoria doc: Getting_Started
Last candidate 6 in A9 changed to solution
Last candidate 3 in B6 changed to solution
Last candidate 3 in C1 changed to solution
Passo 22
Naked Singles
valore: 0.9
categoria doc: Getting_Started
Last candidate 4 in A4 changed to solution
Last candidate 4 in B2 changed to solution
Passo 23
Naked Singles
valore: 0.8
categoria doc: Getting_Started
Last candidate 6 in B5 changed to solution
Last candidate 3 in D4 changed to solution
Passo 24
Naked Singles
valore: 0.7
categoria doc: Getting_Started
Last candidate 4 in D9 changed to solution
Last candidate 4 in E5 changed to solution
Last candidate 6 in G4 changed to solution
Last candidate 3 in G5 changed to solution
Passo 25
Naked Singles
valore: 0.6
categoria doc: Getting_Started
Last candidate 3 in F9 changed to solution
Passo 26
Naked Singles
valore: 0.6
categoria doc: Getting_Started
Last candidate 1 in F2 changed to solution
Passo 27
Naked Singles
valore: 0.5
categoria doc: Getting_Started
Last candidate 5 in F3 changed to solution
Last candidate 6 in F8 changed to solution
Last candidate 8 in G2 changed to solution
Passo 28
Naked Singles
valore: 0.3
categoria doc: Getting_Started
Last candidate 2 in D8 changed to solution
Last candidate 3 in E2 changed to solution
Last candidate 4 in F1 changed to solution
Last candidate 2 in G9 changed to solution
Last candidate 2 in J3 changed to solution
Passo 29
Naked Singles
valore: 0.2
categoria doc: Getting_Started
Last candidate 6 in D1 changed to solution
Last candidate 8 in E3 changed to solution
Last candidate 1 in E8 changed to solution
Last candidate 1 in G1 changed to solution
Last candidate 5 in J1 changed to solution
Last candidate 8 in J9 changed to solution
Passo 30
Naked Singles
valore: 0
categoria doc: Getting_Started
Last candidate 8 in A1 changed to solution
Last candidate 1 in A3 changed to solution
Last candidate 2 in E1 changed to solution