Passi risolutivi (39)
Passo 1
Hidden Singles
valore: 5.7
categoria doc: Getting_Started
6 in C1 is last in column
6 in G2 is last in row/box
Passo 2
Hidden Singles
valore: 5.4
categoria doc: Getting_Started
3 in E1 is last in column
6 in A9 is last in row/box
Passo 3
Hidden Singles
valore: 5
categoria doc: Getting_Started
2 in A2 is last in row
3 in F6 is last in row/column/box
Passo 4
Hidden Singles
valore: 4.7
categoria doc: Getting_Started
3 in A7 is last in row
3 in C2 is last in column/box
7 in F7 is last in row
Passo 5
Hidden Singles
valore: 4.4
categoria doc: Getting_Started
8 in B2 is last in column/box
9 in A5 is last in row
Passo 6
Hidden Singles
valore: 4
categoria doc: Getting_Started
8 in C7 is last in box
8 in H9 is last in column
Passo 7
Naked Pair
valore: 19.1
categoria doc: Naked_Candidates
Naked Pair 7/8 on cells {A4|A6} means
- 7 can be removed from B6
Passo 8
Naked Pair
valore: 18.2
categoria doc: Naked_Candidates
Naked Pair 5/8 on cells {J4|J6} means
- 5 can be removed from G4
- 5 can be removed from G5
- 5 can be removed from H4
- 5 can be removed from J1
- 5/8 can be removed from J5
- 5 can be removed from J8
Last candidate 2 in J5 changed to solution
Passo 9
Hidden Singles
valore: 3.4
categoria doc: Getting_Started
8 in D5 is last in column
Passo 10
Hidden Singles
valore: 3.2
categoria doc: Getting_Started
6 in D8 is last in row
6 in E5 is last in column/box
Passo 11
Pointing Pairs
valore: 46.2
categoria doc: Intersection_Removal
Pair: between Box 4 and Row D:
- 4 can be removed from D4
- 4 can be removed from D7
Passo 12
Pointing Pairs
valore: 45.8
categoria doc: Intersection_Removal
Pair: between Box 6 and Col 9:
- 4 can be removed from G9
Passo 13
Pointing Pairs
valore: 45
categoria doc: Intersection_Removal
Pair: between Box 7 and Row H:
- 5 can be removed from H7
- 5 can be removed from H8
Passo 14
Rectangle Elimination
valore: 74.3
categoria doc: Rectangle_Elimination
If +9[H3] then -9[C3] forcing +9[C8] which removes all 9s from box 9, so H3 cannot be 9
Passo 15
Rectangle Elimination
valore: 73.6
categoria doc: Rectangle_Elimination
If +9[E8] then -9[E2] forcing +9[H2] which removes all 9s from box 9, so E8 cannot be 9
Passo 16
Rectangle Elimination
valore: 72.9
categoria doc: Rectangle_Elimination
If +9[H7] then -9[H2] forcing +9[E2] which removes all 9s from box 6, so H7 cannot be 9
Last candidate 4 in H7 changed to solution
Passo 17
Naked Singles
valore: 1.4
categoria doc: Getting_Started
Last candidate 5 in G7 changed to solution
Passo 18
Naked Singles
valore: 1.3
categoria doc: Getting_Started
Last candidate 2 in G9 changed to solution
Passo 19
Hidden Singles
valore: 2.4
categoria doc: Getting_Started
2 in B8 is last in row/column/box
2 in H3 is last in row/column/box
Passo 20
Hidden Pair
valore: 23.7
categoria doc: Hidden_Candidates
Hidden Pair 1/5 in Col 8, on cells {C8|E8}
- removes 9 from C8
Passo 21
Hidden Singles
valore: 2.3
categoria doc: Getting_Started
9 in C3 is last in row
Passo 22
Naked Pair
valore: 11
categoria doc: Naked_Candidates
Naked Pair 4/7 on cells {B1|B3} means
- 4 can be removed from B6
Passo 23
Chute Remote Pair
valore: 54.3
categoria doc: Chute_Remote_Pairs
5 cannot be set in the yellow cells {G5,H5,J5} and with the Remote Pair in B6 and D4 it means:
- 1 can be removed from E6
Passo 24
Line/Unit Reduction
valore: 42.9
categoria doc: Intersection_Removal
Line/Box Reduction: 1s in box 2 remove the following in the same box:
- 1 can be removed from C5
Passo 25
W-Wing
valore: 53
categoria doc: W_Wings
W-Wing (single). Either there is a 5 in B6 or in D4. They are connected through 1 in B7/D7, therefore
- 5 can be removed from E6
Passo 26
W-Wing
valore: 52.3
categoria doc: W_Wings
W-Wing (single). Either there is a 4 in C5 or in F9. They are connected through 5 in B6/B9, therefore
- 4 can be removed from F5
Passo 27
Hidden Singles
valore: 2.1
categoria doc: Getting_Started
4 in F9 is last in row
Passo 28
Naked Pair
valore: 9.8
categoria doc: Naked_Candidates
Naked Pair 1/5 on cells {D4|F5} means
- 1/5 can be removed from E4
Passo 29
Pointing Pairs
valore: 28.9
categoria doc: Intersection_Removal
Pair: between Box 6 and Row E:
- 5 can be removed from E2
Passo 30
W-Wing
valore: 46.8
categoria doc: W_Wings
W-Wing (single). Either there is a 5 in D4 or in F2. They are connected through 1 in H4/H2, therefore
- 5 can be removed from D1
- 5 can be removed from F5
Last candidate 1 in F5 changed to solution
Passo 31
Naked Singles
valore: 0.9
categoria doc: Getting_Started
Last candidate 5 in D4 changed to solution
Last candidate 5 in F2 changed to solution
Last candidate 4 in G5 changed to solution
Passo 32
Naked Singles
valore: 0.8
categoria doc: Getting_Started
Last candidate 5 in C5 changed to solution
Last candidate 8 in J4 changed to solution
Passo 33
Naked Singles
valore: 0.7
categoria doc: Getting_Started
Last candidate 7 in A4 changed to solution
Last candidate 1 in B6 changed to solution
Last candidate 1 in C8 changed to solution
Last candidate 5 in J6 changed to solution
Passo 34
Naked Singles
valore: 0.6
categoria doc: Getting_Started
Last candidate 8 in A6 changed to solution
Last candidate 9 in B7 changed to solution
Last candidate 4 in C6 changed to solution
Last candidate 4 in E4 changed to solution
Last candidate 5 in E8 changed to solution
Passo 35
Naked Singles
valore: 0.4
categoria doc: Getting_Started
Last candidate 5 in B9 changed to solution
Last candidate 1 in D7 changed to solution
Last candidate 7 in E6 changed to solution
Last candidate 9 in E9 changed to solution
Passo 36
Naked Singles
valore: 0.4
categoria doc: Getting_Started
Last candidate 4 in D3 changed to solution
Last candidate 1 in E2 changed to solution
Passo 37
Naked Singles
valore: 0.3
categoria doc: Getting_Started
Last candidate 7 in B3 changed to solution
Last candidate 9 in D1 changed to solution
Last candidate 9 in H2 changed to solution
Passo 38
Naked Singles
valore: 0.2
categoria doc: Getting_Started
Last candidate 4 in B1 changed to solution
Last candidate 1 in G3 changed to solution
Last candidate 5 in H1 changed to solution
Last candidate 3 in H8 changed to solution
Last candidate 7 in J1 changed to solution
Passo 39
Naked Singles
valore: 0.1
categoria doc: Getting_Started
Last candidate 3 in G4 changed to solution
Last candidate 7 in G8 changed to solution
Last candidate 1 in H4 changed to solution
Last candidate 9 in J8 changed to solution