Passi risolutivi (24)
Passo 1
Hidden Singles
valore: 4.6
categoria doc: Getting_Started
1 in D1 is last in row/box
1 in G2 is last in column
2 in B1 is last in row/box
2 in E5 is last in column/box
2 in F9 is last in row
2 in H3 is last in column
4 in H8 is last in row/box
6 in C7 is last in column/box
Passo 2
Hidden Singles
valore: 4
categoria doc: Getting_Started
2 in J8 is last in row/column/box
8 in G3 is last in column/box
Passo 3
Hidden Singles
valore: 3.9
categoria doc: Getting_Started
9 in E3 is last in column
Passo 4
Pointing Pairs
valore: 56.9
categoria doc: Intersection_Removal
Pair: between Box 1 and Col 2:
- 4 can be removed from F2
Passo 5
Pointing Pairs
valore: 56.5
categoria doc: Intersection_Removal
Pair: between Box 5 and Col 6:
- 4 can be removed from B6
Passo 6
Pointing Pairs
valore: 56.1
categoria doc: Intersection_Removal
Pair: between Box 8 and Row H:
- 5 can be removed from H9
Passo 7
Pointing Pairs
valore: 55.3
categoria doc: Intersection_Removal
Pair: between Box 4 and Row F:
- 6 can be removed from F4
- 6 can be removed from F6
Passo 8
Pointing Pairs
valore: 54.5
categoria doc: Intersection_Removal
Triple: between Box 6 and Row D:
- 8 can be removed from D4
- 8 can be removed from D6
Passo 9
Pointing Pairs
valore: 53.6
categoria doc: Intersection_Removal
Pair: between Box 9 and Col 9:
- 8 can be removed from B9
- 8 can be removed from D9
Passo 10
Y-Wing
valore: 140.9
categoria doc: Y_Wing_Strategy
Y-Wing pattern. Hinge: C8 (3/5), wings B7 D8, therefore
- 8 can be removed from A8
- 8 can be removed from D7
Passo 11
Hidden Singles
valore: 3.5
categoria doc: Getting_Started
8 in B7 is last in column/box
8 in D8 is last in row/column/box
Passo 12
Pointing Pairs
valore: 49.1
categoria doc: Intersection_Removal
Pair: between Box 6 and Col 9:
- 3 can be removed from B9
- 3 can be removed from C9
Passo 13
XY-Chain
valore: 211
categoria doc: XY_Chains
length=4, chain ends: E7 and G8
This proves 5 is the solution at one or possibly both ends of the chain
-5[E7]+4[E7]-4[E1]+3[E1]-3[G1]+9[G1]-9[G8]+5[G8]
- 5 can be removed from G7
Last candidate 7 in G7 changed to solution
Passo 14
Naked Singles
valore: 1.6
categoria doc: Getting_Started
Last candidate 4 in D7 changed to solution
Last candidate 3 in G5 changed to solution
Passo 15
Naked Singles
valore: 1.4
categoria doc: Getting_Started
Last candidate 5 in E7 changed to solution
Last candidate 9 in G1 changed to solution
Passo 16
Naked Singles
valore: 1.3
categoria doc: Getting_Started
Last candidate 3 in E9 changed to solution
Last candidate 5 in G8 changed to solution
Last candidate 6 in H1 changed to solution
Passo 17
Naked Singles
valore: 1.2
categoria doc: Getting_Started
Last candidate 3 in C8 changed to solution
Last candidate 7 in D9 changed to solution
Last candidate 4 in E1 changed to solution
Last candidate 3 in J2 changed to solution
Passo 18
Naked Singles
valore: 1
categoria doc: Getting_Started
Last candidate 9 in A8 changed to solution
Last candidate 7 in C3 changed to solution
Last candidate 6 in F2 changed to solution
Passo 19
Naked Singles
valore: 0.9
categoria doc: Getting_Started
Last candidate 3 in A1 changed to solution
Last candidate 5 in A2 changed to solution
Last candidate 3 in F3 changed to solution
Passo 20
Naked Singles
valore: 0.7
categoria doc: Getting_Started
Last candidate 4 in C2 changed to solution
Last candidate 7 in F1 changed to solution
Last candidate 8 in F4 changed to solution
Passo 21
Naked Singles
valore: 0.6
categoria doc: Getting_Started
Last candidate 6 in A4 changed to solution
Last candidate 9 in B2 changed to solution
Last candidate 1 in C5 changed to solution
Last candidate 4 in F6 changed to solution
Passo 22
Naked Singles
valore: 0.4
categoria doc: Getting_Started
Last candidate 4 in B5 changed to solution
Last candidate 5 in C9 changed to solution
Last candidate 3 in D4 changed to solution
Last candidate 8 in H5 changed to solution
Last candidate 9 in J4 changed to solution
Passo 23
Naked Singles
valore: 0.2
categoria doc: Getting_Started
Last candidate 7 in A5 changed to solution
Last candidate 5 in B4 changed to solution
Last candidate 1 in B9 changed to solution
Last candidate 6 in D6 changed to solution
Last candidate 5 in H6 changed to solution
Last candidate 9 in H9 changed to solution
Last candidate 8 in J9 changed to solution
Passo 24
Naked Singles
valore: 0.1
categoria doc: Getting_Started
Last candidate 8 in A6 changed to solution
Last candidate 3 in B6 changed to solution
Last candidate 1 in H4 changed to solution
Last candidate 6 in J5 changed to solution
Last candidate 7 in J6 changed to solution