Passi risolutivi (31)
Passo 1
Naked Singles
valore: 0
categoria doc: Getting_Started
Last candidate 3 in B4 changed to solution
Passo 2
Naked Singles
valore: 2.5
categoria doc: Getting_Started
Last candidate 1 in B6 changed to solution
Passo 3
Naked Singles
valore: 2.4
categoria doc: Getting_Started
Last candidate 8 in B5 changed to solution
Passo 4
Hidden Singles
valore: 4.1
categoria doc: Getting_Started
2 in F5 is last in column/box
2 in G8 is last in column
3 in C3 is last in column/box
3 in E6 is last in row/column/box
3 in J5 is last in column/box
6 in J3 is last in column
7 in J4 is last in row/column/box
8 in E9 is last in column/box
Passo 5
Hidden Singles
valore: 3.5
categoria doc: Getting_Started
1 in H5 is last in column/box
6 in E8 is last in row/box
7 in B9 is last in column
Passo 6
Naked Singles
valore: 1.7
categoria doc: Getting_Started
Last candidate 2 in B7 changed to solution
Passo 7
Naked Singles
valore: 1.6
categoria doc: Getting_Started
Last candidate 6 in B1 changed to solution
Passo 8
Hidden Singles
valore: 3.1
categoria doc: Getting_Started
6 in A9 is last in row/column/box
Passo 9
Hidden Singles
valore: 2.9
categoria doc: Getting_Started
3 in A7 is last in row/box
3 in G9 is last in column
Passo 10
Hidden Pair
valore: 27.2
categoria doc: Hidden_Candidates
Hidden Pair 2/8 in Box 7, on cells {H1|H3}
- removes 4/5/9 from H1
- removes 5/9 from H3
Passo 11
Pointing Pairs
valore: 40.4
categoria doc: Intersection_Removal
Pair: between Box 1 and Col 2:
- 1 can be removed from E2
Passo 12
Pointing Pairs
valore: 40
categoria doc: Intersection_Removal
Pair: between Box 2 and Col 6:
- 4 can be removed from H6
Passo 13
Pointing Pairs
valore: 39.6
categoria doc: Intersection_Removal
Pair: between Box 4 and Row D:
- 4 can be removed from D7
Passo 14
Pointing Pairs
valore: 38.8
categoria doc: Intersection_Removal
Pair: between Box 7 and Row J:
- 4 can be removed from J8
- 4 can be removed from J9
Passo 15
Line/Unit Reduction
valore: 51.2
categoria doc: Intersection_Removal
Line/Box Reduction: 9s in box 8 remove the following in the same box:
- 9 can be removed from G4
Passo 16
Naked Triple
valore: 48.4
categoria doc: Naked_Candidates
Naked Triple 2/5/8 on cells {A1|C1|H1} means
- 5/8 can be removed from D1
- 2/5 can be removed from E1
- 5 can be removed from J1
Passo 17
Line/Unit Reduction
valore: 47.3
categoria doc: Intersection_Removal
Line/Box Reduction: 5s in box 1 remove the following in the same box:
- 5 can be removed from A2
- 5 can be removed from C2
Passo 18
Rectangle Elimination
valore: 58.5
categoria doc: Rectangle_Elimination
If +9[F3] then -9[F8] forcing +9[J8] which removes all 9s from box 7, so F3 cannot be 9
Passo 19
Line/Unit Reduction
valore: 45.7
categoria doc: Intersection_Removal
Line/Box Reduction: 9s in box 6 remove the following in the same box:
- 9 can be removed from D7
- 9 can be removed from E7
Passo 20
W-Wing
valore: 56.4
categoria doc: W_Wings
W-Wing (single). Either there is a 1 in F3 or in J9. They are connected through 5 in G3/J2, therefore
- 1 can be removed from F9
Passo 21
Hidden Singles
valore: 2.2
categoria doc: Getting_Started
1 in J9 is last in column
Passo 22
Naked Singles
valore: 1.1
categoria doc: Getting_Started
Last candidate 9 in J8 changed to solution
Passo 23
Naked Singles
valore: 1
categoria doc: Getting_Started
Last candidate 4 in J1 changed to solution
Passo 24
Naked Singles
valore: 1
categoria doc: Getting_Started
Last candidate 5 in J2 changed to solution
Passo 25
Naked Singles
valore: 0.9
categoria doc: Getting_Started
Last candidate 2 in E2 changed to solution
Last candidate 9 in G3 changed to solution
Passo 26
Naked Singles
valore: 0.9
categoria doc: Getting_Started
Last candidate 1 in C2 changed to solution
Passo 27
Naked Singles
valore: 0.8
categoria doc: Getting_Started
Last candidate 8 in A2 changed to solution
Last candidate 4 in C7 changed to solution
Passo 28
Naked Singles
valore: 0.7
categoria doc: Getting_Started
Last candidate 5 in A1 changed to solution
Last candidate 1 in A8 changed to solution
Last candidate 5 in C6 changed to solution
Last candidate 4 in D2 changed to solution
Last candidate 5 in G7 changed to solution
Passo 29
Naked Singles
valore: 0.5
categoria doc: Getting_Started
Last candidate 9 in A5 changed to solution
Last candidate 2 in C1 changed to solution
Last candidate 7 in D7 changed to solution
Last candidate 4 in F8 changed to solution
Last candidate 4 in G4 changed to solution
Last candidate 9 in H6 changed to solution
Last candidate 4 in H9 changed to solution
Passo 30
Naked Singles
valore: 0.3
categoria doc: Getting_Started
Last candidate 4 in A6 changed to solution
Last candidate 9 in D1 changed to solution
Last candidate 5 in D5 changed to solution
Last candidate 1 in E7 changed to solution
Last candidate 5 in F9 changed to solution
Last candidate 8 in H1 changed to solution
Last candidate 5 in H4 changed to solution
Passo 31
Naked Singles
valore: 0.1
categoria doc: Getting_Started
Last candidate 8 in D3 changed to solution
Last candidate 7 in E1 changed to solution
Last candidate 5 in E3 changed to solution
Last candidate 9 in E4 changed to solution
Last candidate 1 in F3 changed to solution
Last candidate 9 in F7 changed to solution
Last candidate 2 in H3 changed to solution