Passi risolutivi (37)
Passo 1
Hidden Singles
valore: 5.6
categoria doc: Getting_Started
5 in E5 is last in row/box
7 in A6 is last in row
7 in C2 is last in column/box
Passo 2
Hidden Singles
valore: 5.2
categoria doc: Getting_Started
2 in C8 is last in row
6 in E9 is last in row
Passo 3
Hidden Singles
valore: 5
categoria doc: Getting_Started
9 in E2 is last in row
Passo 4
Hidden Singles
valore: 4.7
categoria doc: Getting_Started
8 in J2 is last in column
Passo 5
Hidden Singles
valore: 4.5
categoria doc: Getting_Started
8 in H4 is last in row/column/box
Passo 6
Hidden Singles
valore: 4.3
categoria doc: Getting_Started
7 in H7 is last in row
7 in J4 is last in column/box
Passo 7
Naked Pair
valore: 20.8
categoria doc: Naked_Candidates
Naked Pair 4/8 on cells {A8|E8} means
- 4/8 can be removed from F8
Passo 8
Hidden Pair
valore: 40.4
categoria doc: Hidden_Candidates
Hidden Pair 3/5 in Col 4, on cells {B4|G4}
- removes 6/9 from B4
- removes 6/9 from G4
Passo 9
Pointing Pairs
valore: 59.8
categoria doc: Intersection_Removal
Pair: between Box 5 and Col 6:
- 2 can be removed from G6
- 2 can be removed from H6
Passo 10
Pointing Pairs
valore: 59.4
categoria doc: Intersection_Removal
Pair: between Box 3 and Row A:
- 4 can be removed from A5
Passo 11
Hidden Singles
valore: 3.9
categoria doc: Getting_Started
4 in C5 is last in column
Passo 12
Naked Singles
valore: 1.9
categoria doc: Getting_Started
Last candidate 6 in C4 changed to solution
Passo 13
Naked Singles
valore: 1.8
categoria doc: Getting_Started
Last candidate 1 in C7 changed to solution
Passo 14
Hidden Singles
valore: 3.4
categoria doc: Getting_Started
6 in D6 is last in row/box
6 in G5 is last in column
Passo 15
Hidden Singles
valore: 3.2
categoria doc: Getting_Started
2 in F6 is last in column/box
Passo 16
Pointing Pairs
valore: 47.5
categoria doc: Intersection_Removal
Pair: between Box 6 and Row F:
- 1 can be removed from F3
Passo 17
Pointing Pairs
valore: 46.6
categoria doc: Intersection_Removal
Pair: between Box 2 and Row B:
- 5 can be removed from B7
- 5 can be removed from B9
Last candidate 9 in B9 changed to solution
Passo 18
Hidden Singles
valore: 2.8
categoria doc: Getting_Started
9 in A5 is last in row/box
9 in G6 is last in column
Passo 19
Hidden Singles
valore: 2.6
categoria doc: Getting_Started
5 in G4 is last in row
9 in J3 is last in row/column/box
Passo 20
Naked Singles
valore: 1.3
categoria doc: Getting_Started
Last candidate 3 in B4 changed to solution
Last candidate 1 in H6 changed to solution
Passo 21
Naked Singles
valore: 1.1
categoria doc: Getting_Started
Last candidate 1 in B5 changed to solution
Last candidate 5 in B6 changed to solution
Passo 22
Line/Box Reduction
valore: 41.3
categoria doc: Intersection_Removal
Pair: between Row G and Box 7:
- 2 can be removed from H1
- 2 can be removed from H3
- 2 can be removed from J1
Passo 23
Y-Wing
valore: 81.4
categoria doc: Y_Wing_Strategy
Y-Wing pattern. Hinge: H9 (2/5), wings H5 J7, therefore
- 3 can be removed from J5
Last candidate 2 in J5 changed to solution
Passo 24
Naked Singles
valore: 1
categoria doc: Getting_Started
Last candidate 3 in H5 changed to solution
Passo 25
Naked Singles
valore: 0.9
categoria doc: Getting_Started
Last candidate 4 in H3 changed to solution
Passo 26
Naked Singles
valore: 0.9
categoria doc: Getting_Started
Last candidate 5 in H1 changed to solution
Passo 27
Naked Singles
valore: 0.8
categoria doc: Getting_Started
Last candidate 2 in H9 changed to solution
Passo 28
Rectangle Elimination
valore: 40.6
categoria doc: Rectangle_Elimination
If +3[D7] then -3[D2] forcing +3[G2] which removes all 3s from box 9, so D7 cannot be 3
Last candidate 9 in D7 changed to solution
Passo 29
Naked Singles
valore: 0.8
categoria doc: Getting_Started
Last candidate 4 in D4 changed to solution
Passo 30
Naked Singles
valore: 0.7
categoria doc: Getting_Started
Last candidate 9 in F4 changed to solution
Passo 31
Hidden Singles
valore: 1.4
categoria doc: Getting_Started
4 in E1 is last in column/box
4 in F9 is last in row
Passo 32
Naked Singles
valore: 0.6
categoria doc: Getting_Started
Last candidate 5 in A9 changed to solution
Last candidate 8 in E8 changed to solution
Passo 33
Naked Singles
valore: 0.6
categoria doc: Getting_Started
Last candidate 4 in A8 changed to solution
Last candidate 3 in F7 changed to solution
Last candidate 1 in J9 changed to solution
Passo 34
Naked Singles
valore: 0.4
categoria doc: Getting_Started
Last candidate 8 in F3 changed to solution
Last candidate 1 in F8 changed to solution
Last candidate 3 in G8 changed to solution
Last candidate 3 in J1 changed to solution
Last candidate 5 in J7 changed to solution
Passo 35
Naked Singles
valore: 0.3
categoria doc: Getting_Started
Last candidate 8 in A1 changed to solution
Last candidate 2 in G2 changed to solution
Passo 36
Naked Singles
valore: 0.2
categoria doc: Getting_Started
Last candidate 6 in A7 changed to solution
Last candidate 2 in B1 changed to solution
Last candidate 3 in D2 changed to solution
Last candidate 1 in G3 changed to solution
Passo 37
Naked Singles
valore: 0.1
categoria doc: Getting_Started
Last candidate 3 in A3 changed to solution
Last candidate 6 in B3 changed to solution
Last candidate 8 in B7 changed to solution
Last candidate 1 in D1 changed to solution
Last candidate 2 in D3 changed to solution