Passi risolutivi (18)
Passo 1
Naked Singles
valore: 1
categoria doc: Getting_Started
Last candidate 4 in C3 changed to solution
Last candidate 1 in F1 changed to solution
Last candidate 2 in F2 changed to solution
Last candidate 9 in B3 changed to solution
Passo 2
Naked Singles
valore: 2.1
categoria doc: Getting_Started
Last candidate 1 in A3 changed to solution
Last candidate 7 in B2 changed to solution
Last candidate 8 in B8 changed to solution
Last candidate 2 in J3 changed to solution
Last candidate 3 in A2 changed to solution
Last candidate 4 in B5 changed to solution
Last candidate 5 in C2 changed to solution
Passo 3
Hidden Singles
valore: 3.6
categoria doc: Getting_Started
3 in E8 is last in box
7 in A5 is last in column/box
7 in E1 is last in row/column/box
Passo 4
Hidden Singles
valore: 3.2
categoria doc: Getting_Started
6 in J8 is last in column
8 in D5 is last in column
Passo 5
Hidden Singles
valore: 2.9
categoria doc: Getting_Started
7 in C8 is last in column
7 in J9 is last in row/box
Passo 6
Pointing Pairs
valore: 40.4
categoria doc: Intersection_Removal
Pair: between Box 5 and Row E:
- 1 can be removed from E9
Passo 7
Pointing Pairs
valore: 40
categoria doc: Intersection_Removal
Pair: between Box 6 and Col 9:
- 5 can be removed from G9
Passo 8
Line/Unit Reduction
valore: 52.3
categoria doc: Intersection_Removal
Line/Box Reduction: 1s in box 8 remove the following in the same box:
- 1 can be removed from G6
- 1 can be removed from H5
Passo 9
XY-Chain
valore: 168.1
categoria doc: XY_Chains
length=4, chain ends: D8 and H2
This proves 1 is the solution at one or possibly both ends of the chain
-1[D8]+9[D8]-9[D1]+4[D1]-4[E2]+9[E2]-9[H2]+1[H2]
- 1 can be removed from H8
Passo 10
Hidden Singles
valore: 2.6
categoria doc: Getting_Started
1 in H2 is last in row
Passo 11
Line/Unit Reduction
valore: 47.9
categoria doc: Intersection_Removal
Line/Box Reduction: 9s in box 9 remove the following in the same box:
- 9 can be removed from G7
- 9 can be removed from G8
- 9 can be removed from G9
- 9 can be removed from J7
Passo 12
XY-Chain
valore: 175.4
categoria doc: XY_Chains
length=5, chain ends: D8 and G9
This proves 1 is the solution at one or possibly both ends of the chain
-1[D8]+9[D8]-9[D1]+4[D1]-4[E2]+9[E2]-9[G2]+4[G2]-4[G9]+1[G9]
- 1 can be removed from D9
- 1 can be removed from G8
Last candidate 2 in G8 changed to solution
Last candidate 9 in H8 changed to solution
Passo 13
Naked Singles
valore: 1
categoria doc: Getting_Started
Last candidate 1 in D8 changed to solution
Last candidate 5 in H7 changed to solution
Last candidate 2 in H5 changed to solution
Passo 14
Naked Singles
valore: 0.9
categoria doc: Getting_Started
Last candidate 1 in E5 changed to solution
Passo 15
Hidden Singles
valore: 1.8
categoria doc: Getting_Started
1 in G9 is last in row/column/box
1 in J6 is last in row/column/box
9 in A7 is last in column
Passo 16
Hidden Singles
valore: 1.5
categoria doc: Getting_Started
9 in G6 is last in column/box
9 in J1 is last in row
Passo 17
Naked Singles
valore: 0.2
categoria doc: Getting_Started
Last candidate 4 in D1 changed to solution
Last candidate 5 in D4 changed to solution
Last candidate 9 in D9 changed to solution
Last candidate 9 in E2 changed to solution
Last candidate 6 in E9 changed to solution
Last candidate 3 in F5 changed to solution
Last candidate 6 in F6 changed to solution
Last candidate 5 in F9 changed to solution
Last candidate 5 in G1 changed to solution
Last candidate 4 in G2 changed to solution
Last candidate 3 in G7 changed to solution
Last candidate 3 in J4 changed to solution
Last candidate 5 in J5 changed to solution
Last candidate 4 in J7 changed to solution
Last candidate 2 in E6 changed to solution
Last candidate 8 in G4 changed to solution
Passo 18
Naked Singles
valore: 0
categoria doc: Getting_Started
Last candidate 8 in A6 changed to solution
Last candidate 6 in C4 changed to solution
Last candidate 3 in C6 changed to solution
Last candidate 4 in E4 changed to solution
Last candidate 6 in A1 changed to solution
Last candidate 2 in A4 changed to solution
Last candidate 8 in C1 changed to solution