Passi risolutivi (13)
Passo 1
Hidden Singles
valore: 5.8
categoria doc: Getting_Started
1 in J2 is last in row
2 in B2 is last in box
2 in E3 is last in column
3 in G1 is last in column/box
4 in C2 is last in column/box
9 in G5 is last in row/box
Passo 2
Hidden Singles
valore: 4.9
categoria doc: Getting_Started
2 in A8 is last in row/box
3 in F7 is last in column
3 in H8 is last in box
5 in G3 is last in column
Passo 3
Hidden Singles
valore: 4.3
categoria doc: Getting_Started
1 in H9 is last in row/box
3 in J4 is last in column
Passo 4
Naked Pair
valore: 20.1
categoria doc: Naked_Candidates
Naked Pair 4/8 on cells {G8|G9} means
- 8 can be removed from G2
- 4/8 can be removed from G4
Passo 5
Hidden Pair
valore: 39.6
categoria doc: Hidden_Candidates
Hidden Pair 2/6 in Box 6, on cells {D9|F9}
- removes 4 from D9
- removes 9 from F9
Passo 6
Naked Pair
valore: 19.7
categoria doc: Naked_Candidates
Naked Pair 2/6 on cells {D9|F9} means
- 6 can be removed from C9
Passo 7
Pointing Pairs
valore: 58.2
categoria doc: Intersection_Removal
Pair: between Box 7 and Col 2:
- 6 can be removed from D2
- 6 can be removed from F2
Passo 8
Line/Unit Reduction
valore: 74.8
categoria doc: Intersection_Removal
Line/Box Reduction: 8s in box 2 remove the following in the same box:
- 8 can be removed from B4
- 8 can be removed from B5
- 8 can be removed from B6
- 8 can be removed from C5
- 8 can be removed from C6
Passo 9
XY-Chain
valore: 315.7
categoria doc: XY_Chains
length=6, chain ends: E1 and H2
This proves 8 is the solution at one or possibly both ends of the chain
-8[E1]+9[E1]-9[E9]+4[E9]-4[D8]+5[D8]-5[D2]+7[D2]-7[G2]+6[G2]-6[H2]+8[H2]
- 8 can be removed from F2
Passo 10
Hidden Singles
valore: 3.7
categoria doc: Getting_Started
8 in H2 is last in column
Passo 11
Naked Singles
valore: 1.4
categoria doc: Getting_Started
Last candidate 8 in C3 changed to solution
Last candidate 9 in C9 changed to solution
Last candidate 4 in E9 changed to solution
Last candidate 6 in G2 changed to solution
Last candidate 7 in G4 changed to solution
Last candidate 8 in G9 changed to solution
Last candidate 5 in D8 changed to solution
Last candidate 1 in E7 changed to solution
Last candidate 9 in F8 changed to solution
Last candidate 4 in G8 changed to solution
Passo 12
Naked Singles
valore: 0.9
categoria doc: Getting_Started
Last candidate 6 in A7 changed to solution
Last candidate 5 in C7 changed to solution
Last candidate 1 in C8 changed to solution
Last candidate 7 in D2 changed to solution
Last candidate 5 in F2 changed to solution
Last candidate 8 in B8 changed to solution
Last candidate 7 in C1 changed to solution
Last candidate 3 in C5 changed to solution
Last candidate 6 in C6 changed to solution
Last candidate 6 in D1 changed to solution
Last candidate 2 in D9 changed to solution
Last candidate 8 in F1 changed to solution
Last candidate 1 in F4 changed to solution
Last candidate 6 in F9 changed to solution
Passo 13
Naked Singles
valore: 0.1
categoria doc: Getting_Started
Last candidate 1 in B1 changed to solution
Last candidate 5 in B4 changed to solution
Last candidate 7 in B5 changed to solution
Last candidate 9 in B6 changed to solution
Last candidate 4 in D5 changed to solution
Last candidate 3 in D6 changed to solution
Last candidate 9 in E1 changed to solution
Last candidate 8 in E4 changed to solution
Last candidate 5 in E6 changed to solution
Last candidate 2 in F5 changed to solution
Last candidate 7 in F6 changed to solution
Last candidate 5 in H5 changed to solution
Last candidate 4 in H6 changed to solution
Last candidate 8 in J5 changed to solution
Last candidate 2 in J6 changed to solution
Last candidate 4 in A4 changed to solution
Last candidate 1 in A5 changed to solution
Last candidate 8 in A6 changed to solution
Last candidate 6 in H4 changed to solution