Passi risolutivi (26)
Passo 1
Hidden Singles
valore: 5.9
categoria doc: Getting_Started
3 in E9 is last in row
6 in F1 is last in column/box
6 in G6 is last in row/box
8 in C6 is last in row/box
Passo 2
Hidden Singles
valore: 5.2
categoria doc: Getting_Started
2 in E5 is last in row
3 in B8 is last in row/column/box
3 in F6 is last in column
3 in G4 is last in row/box
6 in D7 is last in column
Passo 3
Hidden Singles
valore: 4.5
categoria doc: Getting_Started
1 in D4 is last in box
3 in D2 is last in row/column/box
6 in A8 is last in column/box
6 in B5 is last in row
8 in E1 is last in row
Passo 4
Hidden Singles
valore: 4.1
categoria doc: Getting_Started
4 in B6 is last in box
Passo 5
Hidden Singles
valore: 3.9
categoria doc: Getting_Started
1 in A6 is last in column/box
1 in B9 is last in row
Passo 6
Naked Singles
valore: 1.7
categoria doc: Getting_Started
Last candidate 7 in C8 changed to solution
Passo 7
Hidden Singles
valore: 3.1
categoria doc: Getting_Started
1 in C3 is last in row/column/box
1 in F7 is last in column
1 in H8 is last in row/box
2 in C4 is last in box
Passo 8
Hidden Singles
valore: 2.9
categoria doc: Getting_Started
4 in C1 is last in row/box
5 in C7 is last in column
Passo 9
Naked Singles
valore: 1.3
categoria doc: Getting_Started
Last candidate 9 in C9 changed to solution
Passo 10
Naked Pair
valore: 12.8
categoria doc: Naked_Candidates
Naked Pair 8/9 on cells {D5|F5} means
- 9 can be removed from A5
- 9 can be removed from H5
- 9 can be removed from J5
Last candidate 7 in A5 changed to solution
Passo 11
Naked Singles
valore: 1.1
categoria doc: Getting_Started
Last candidate 9 in B4 changed to solution
Passo 12
Naked Singles
valore: 1.1
categoria doc: Getting_Started
Last candidate 7 in H4 changed to solution
Passo 13
Pointing Pairs
valore: 32.2
categoria doc: Intersection_Removal
Pair: between Box 4 and Col 3:
- 4 can be removed from G3
Passo 14
Pointing Pairs
valore: 31.4
categoria doc: Intersection_Removal
Pair: between Box 9 and Col 9:
- 8 can be removed from D9
- 8 can be removed from F9
Last candidate 5 in D9 changed to solution
Passo 15
Hidden Singles
valore: 2
categoria doc: Getting_Started
5 in F3 is last in column
Passo 16
Line/Unit Reduction
valore: 35.8
categoria doc: Intersection_Removal
Line/Box Reduction: 9s in box 7 remove the following in the same box:
- 9 can be removed from G2
- 9 can be removed from G3
- 9 can be removed from H2
- 9 can be removed from J2
Passo 17
W-Wing
valore: 44
categoria doc: W_Wings
W-Wing (single). Either there is a 2 in F9 or in G3. They are connected through 7 in E7/E3, therefore
- 2 can be removed from G9
Passo 18
Line/Unit Reduction
valore: 34.1
categoria doc: Intersection_Removal
Line/Box Reduction: 2s in box 7 remove the following in the same box:
- 2 can be removed from H2
- 2 can be removed from J2
Passo 19
Rectangle Elimination
valore: 41.3
categoria doc: Rectangle_Elimination
If either +7[E7] or +7[G3] are ON then both are on because they are strongly linked through the hinge cell E3. If both are ON then this removes all 7s from Box 9, so neither can be 7
Last candidate 4 in E7 changed to solution
Last candidate 2 in G3 changed to solution
Passo 20
Naked Singles
valore: 0.6
categoria doc: Getting_Started
Last candidate 9 in A3 changed to solution
Last candidate 8 in D8 changed to solution
Last candidate 7 in E3 changed to solution
Passo 21
Naked Singles
valore: 0.5
categoria doc: Getting_Started
Last candidate 2 in A2 changed to solution
Last candidate 4 in D3 changed to solution
Last candidate 9 in D5 changed to solution
Last candidate 9 in F2 changed to solution
Last candidate 2 in F8 changed to solution
Passo 22
Naked Singles
valore: 0.4
categoria doc: Getting_Started
Last candidate 8 in F5 changed to solution
Last candidate 7 in F9 changed to solution
Last candidate 4 in J8 changed to solution
Passo 23
Naked Singles
valore: 0.3
categoria doc: Getting_Started
Last candidate 8 in G9 changed to solution
Last candidate 5 in J5 changed to solution
Passo 24
Naked Singles
valore: 0.2
categoria doc: Getting_Started
Last candidate 4 in H5 changed to solution
Last candidate 2 in H9 changed to solution
Last candidate 7 in J2 changed to solution
Passo 25
Naked Singles
valore: 0.1
categoria doc: Getting_Started
Last candidate 5 in B2 changed to solution
Last candidate 9 in G1 changed to solution
Last candidate 4 in G2 changed to solution
Last candidate 9 in H6 changed to solution
Last candidate 9 in J7 changed to solution
Passo 26
Naked Singles
valore: 0
categoria doc: Getting_Started
Last candidate 7 in B1 changed to solution
Last candidate 7 in G7 changed to solution
Last candidate 5 in H1 changed to solution
Last candidate 8 in H2 changed to solution
Last candidate 2 in J6 changed to solution