Passi risolutivi (20)
Passo 1
Hidden Singles
valore: 5
categoria doc: Getting_Started
1 in B7 is last in row/column/box
1 in E8 is last in row
1 in F6 is last in box
1 in G2 is last in column/box
2 in H9 is last in column/box
6 in E9 is last in row/box
Passo 2
Hidden Singles
valore: 4.2
categoria doc: Getting_Started
1 in H4 is last in row/column/box
2 in G3 is last in column
4 in D4 is last in box
6 in A4 is last in row
6 in C7 is last in column/box
Passo 3
Naked Singles
valore: 1.7
categoria doc: Getting_Started
Last candidate 3 in C3 changed to solution
Passo 4
Hidden Singles
valore: 3.4
categoria doc: Getting_Started
6 in B3 is last in column
6 in G1 is last in row/box
Passo 5
Hidden Pair
valore: 31.9
categoria doc: Hidden_Candidates
Hidden Pair 3/5 in Col 5, on cells {B5|H5}
- removes 7/8 from B5
- removes 8 from H5
Passo 6
Pointing Pairs
valore: 47.5
categoria doc: Intersection_Removal
Pair: between Box 2 and Row B:
- 3 can be removed from B9
Passo 7
Pointing Pairs
valore: 46.6
categoria doc: Intersection_Removal
Pair: between Box 6 and Row F:
- 4 can be removed from F1
- 4 can be removed from F3
Last candidate 9 in F3 changed to solution
Last candidate 4 in H3 changed to solution
Passo 8
Hidden Singles
valore: 2.8
categoria doc: Getting_Started
4 in G7 is last in column
Passo 9
Hidden Singles
valore: 2.6
categoria doc: Getting_Started
4 in J6 is last in row/column/box
Passo 10
Hidden Singles
valore: 2.4
categoria doc: Getting_Started
2 in C6 is last in column
2 in J4 is last in row/box
Passo 11
Hidden Singles
valore: 2.3
categoria doc: Getting_Started
9 in A6 is last in column/box
Passo 12
Pointing Pairs
valore: 32.6
categoria doc: Intersection_Removal
Pair: between Box 2 and Row B:
- 5 can be removed from B1
Passo 13
Hidden Singles
valore: 2.1
categoria doc: Getting_Started
5 in D1 is last in column
Passo 14
Pointing Pairs
valore: 30.9
categoria doc: Intersection_Removal
Pair: between Box 9 and Col 8:
- 8 can be removed from F8
Passo 15
Rectangle Elimination
valore: 50.9
categoria doc: Rectangle_Elimination
If +3[H1] then -3[H7] forcing +3[D7] which removes all 3s from box 4, so H1 cannot be 3
Passo 16
Pointing Pairs
valore: 30.1
categoria doc: Intersection_Removal
Pair: between Box 7 and Row J:
- 3 can be removed from J8
Passo 17
Y-Wing
valore: 79.2
categoria doc: Y_Wing_Strategy
Y-Wing pattern. Hinge: C8 (5/9), wings C2 J8, therefore
- 8 can be removed from J2
Last candidate 3 in J2 changed to solution
Passo 18
Naked Singles
valore: 0.8
categoria doc: Getting_Started
Last candidate 2 in D2 changed to solution
Last candidate 8 in D5 changed to solution
Last candidate 4 in E2 changed to solution
Last candidate 7 in F5 changed to solution
Last candidate 5 in A2 changed to solution
Last candidate 8 in C2 changed to solution
Last candidate 7 in C4 changed to solution
Last candidate 9 in C9 changed to solution
Last candidate 3 in D9 changed to solution
Last candidate 7 in E1 changed to solution
Last candidate 2 in E5 changed to solution
Last candidate 3 in F1 changed to solution
Last candidate 4 in F8 changed to solution
Last candidate 8 in F9 changed to solution
Passo 19
Naked Singles
valore: 0.2
categoria doc: Getting_Started
Last candidate 3 in A8 changed to solution
Last candidate 4 in A9 changed to solution
Last candidate 4 in B1 changed to solution
Last candidate 7 in B9 changed to solution
Last candidate 5 in C8 changed to solution
Last candidate 9 in D7 changed to solution
Last candidate 8 in G8 changed to solution
Last candidate 3 in H7 changed to solution
Last candidate 9 in J8 changed to solution
Last candidate 3 in G4 changed to solution
Last candidate 7 in G6 changed to solution
Last candidate 5 in H5 changed to solution
Last candidate 8 in H6 changed to solution
Last candidate 8 in J1 changed to solution
Passo 20
Naked Singles
valore: 0
categoria doc: Getting_Started
Last candidate 8 in B4 changed to solution
Last candidate 3 in B5 changed to solution
Last candidate 5 in B6 changed to solution
Last candidate 9 in H1 changed to solution