Passi risolutivi (38)
Passo 1
Naked Singles
valore: 1
categoria doc: Getting_Started
Last candidate 5 in F7 changed to solution
Passo 2
Hidden Singles
valore: 5.5
categoria doc: Getting_Started
5 in E4 is last in row/column/box
5 in H1 is last in box
Passo 3
Hidden Singles
valore: 5.3
categoria doc: Getting_Started
7 in J1 is last in column/box
Passo 4
Naked Pair
valore: 25.4
categoria doc: Naked_Candidates
Naked Pair 2/3 on cells {D7|D8} means
- 2 can be removed from D1
- 2/3 can be removed from D3
- 3 can be removed from E9
Last candidate 1 in D1 changed to solution
Passo 5
Naked Singles
valore: 2.3
categoria doc: Getting_Started
Last candidate 8 in D3 changed to solution
Passo 6
Naked Singles
valore: 2.2
categoria doc: Getting_Started
Last candidate 4 in F3 changed to solution
Passo 7
Naked Singles
valore: 2.1
categoria doc: Getting_Started
Last candidate 6 in F2 changed to solution
Last candidate 8 in F9 changed to solution
Passo 8
Naked Singles
valore: 2
categoria doc: Getting_Started
Last candidate 2 in E1 changed to solution
Last candidate 4 in E9 changed to solution
Last candidate 1 in F5 changed to solution
Passo 9
Naked Singles
valore: 1.8
categoria doc: Getting_Started
Last candidate 6 in C1 changed to solution
Last candidate 3 in E2 changed to solution
Passo 10
Naked Singles
valore: 1.8
categoria doc: Getting_Started
Last candidate 4 in B1 changed to solution
Passo 11
Hidden Singles
valore: 3.6
categoria doc: Getting_Started
3 in J3 is last in column/box
4 in H2 is last in row
Passo 12
Naked Singles
valore: 1.6
categoria doc: Getting_Started
Last candidate 1 in J2 changed to solution
Passo 13
Naked Singles
valore: 1.5
categoria doc: Getting_Started
Last candidate 2 in G2 changed to solution
Passo 14
Hidden Singles
valore: 2.9
categoria doc: Getting_Started
1 in G8 is last in column/box
1 in H6 is last in row
Passo 15
Hidden Singles
valore: 2.6
categoria doc: Getting_Started
2 in H5 is last in row/box
4 in G4 is last in row
4 in J8 is last in column/box
5 in G9 is last in row/box
Passo 16
Hidden Singles
valore: 2.3
categoria doc: Getting_Started
3 in G5 is last in box
6 in J7 is last in row/box
Passo 17
Hidden Singles
valore: 2
categoria doc: Getting_Started
7 in G6 is last in box
9 in G7 is last in box
Passo 18
Pointing Pairs
valore: 28.1
categoria doc: Intersection_Removal
Pair: between Box 3 and Row A:
- 7 can be removed from A4
Passo 19
Unique Rectangle 2+
valore: 90.8
categoria doc: Unique_Rectangles
Uniqueness Type 4 (Row) removing 9 from roof because of D4,D5,C4,C5
Passo 20
W-Wing
valore: 44.7
categoria doc: W_Wings
W-Wing (single). Either there is a 8 in A2 or in J6. They are connected through 9 in C2/C6, therefore
- 8 can be removed from A6
Passo 21
Hidden Unique Rectangle
valore: 176.1
categoria doc: Hidden_Unique_Rectangles
Type 1: removing 2 at A8 because of AC38 and two strong links on 5
Passo 22
WXYZ Wing
valore: 173.3
categoria doc: WXYZ_Wing
WXYZ Wing Type 1: The four cells {A6,A7,A9,B5} contain in total 2/6/7/9 with the hinge on A6.
Non-Restricted candidate 9 determines the 'wing' cells (in yellow) and one of those 9s must be true. Therefore...
- 9 can be removed from A4
Passo 23
WXYZ Wing
valore: 170.6
categoria doc: WXYZ_Wing
WXYZ Wing Type 1: The four cells {B8,B5,B9,D8} contain in total 2/3/6/9 with the hinge on B8.
Non-Restricted candidate 3 determines the 'wing' cells (in yellow) and one of those 3s must be true. Therefore...
- 3 can be removed from C8
Passo 24
Hidden Singles
valore: 1.7
categoria doc: Getting_Started
3 in C4 is last in row
Passo 25
Hidden Singles
valore: 1.5
categoria doc: Getting_Started
7 in C5 is last in row/box
7 in D4 is last in column
Passo 26
Naked Singles
valore: 0.7
categoria doc: Getting_Started
Last candidate 9 in D5 changed to solution
Passo 27
Naked Singles
valore: 0.6
categoria doc: Getting_Started
Last candidate 6 in B5 changed to solution
Passo 28
Naked Singles
valore: 0.6
categoria doc: Getting_Started
Last candidate 8 in E5 changed to solution
Passo 29
Naked Singles
valore: 0.6
categoria doc: Getting_Started
Last candidate 6 in E6 changed to solution
Passo 30
Hidden Singles
valore: 1.2
categoria doc: Getting_Started
6 in A8 is last in row/column/box
Passo 31
Hidden Singles
valore: 1.1
categoria doc: Getting_Started
5 in A3 is last in row
5 in C8 is last in column/box
Passo 32
Naked Singles
valore: 0.5
categoria doc: Getting_Started
Last candidate 2 in C3 changed to solution
Passo 33
Naked Singles
valore: 0.4
categoria doc: Getting_Started
Last candidate 1 in B3 changed to solution
Passo 34
Naked Singles
valore: 0.4
categoria doc: Getting_Started
Last candidate 9 in B4 changed to solution
Passo 35
Naked Singles
valore: 0.2
categoria doc: Getting_Started
Last candidate 2 in A6 changed to solution
Last candidate 3 in B9 changed to solution
Last candidate 8 in C6 changed to solution
Last candidate 8 in J4 changed to solution
Passo 36
Naked Singles
valore: 0.1
categoria doc: Getting_Started
Last candidate 1 in A4 changed to solution
Last candidate 7 in A7 changed to solution
Last candidate 2 in B8 changed to solution
Last candidate 9 in C2 changed to solution
Last candidate 7 in H9 changed to solution
Last candidate 9 in J6 changed to solution
Passo 37
Naked Singles
valore: 0
categoria doc: Getting_Started
Last candidate 8 in A2 changed to solution
Last candidate 9 in A9 changed to solution
Last candidate 3 in D8 changed to solution
Last candidate 3 in H7 changed to solution
Passo 38
Naked Singles
valore: 0
categoria doc: Getting_Started
Last candidate 2 in D7 changed to solution