Passi risolutivi (26)
Passo 1
Naked Singles
valore: 0
categoria doc: Getting_Started
Last candidate 8 in D3 changed to solution
Last candidate 9 in F7 changed to solution
Passo 2
Naked Singles
valore: 2.8
categoria doc: Getting_Started
Last candidate 4 in D1 changed to solution
Last candidate 5 in D7 changed to solution
Last candidate 2 in F4 changed to solution
Last candidate 7 in F9 changed to solution
Passo 3
Naked Singles
valore: 2.4
categoria doc: Getting_Started
Last candidate 9 in D6 changed to solution
Last candidate 4 in E4 changed to solution
Last candidate 8 in E8 changed to solution
Last candidate 1 in F3 changed to solution
Passo 4
Naked Singles
valore: 2.1
categoria doc: Getting_Started
Last candidate 9 in A4 changed to solution
Last candidate 6 in E7 changed to solution
Passo 5
Naked Singles
valore: 2
categoria doc: Getting_Started
Last candidate 1 in C4 changed to solution
Last candidate 8 in H4 changed to solution
Passo 6
Hidden Singles
valore: 3.7
categoria doc: Getting_Started
7 in H8 is last in column/box
7 in J5 is last in row
Passo 7
Naked Pair
valore: 17.3
categoria doc: Naked_Candidates
Naked Pair 2/4 on cells {G6|J6} means
- 2/4 can be removed from B6
- 2/4 can be removed from G5
- 2 can be removed from H5
Passo 8
Naked Pair
valore: 16.8
categoria doc: Naked_Candidates
Naked Pair 2/5 on cells {H2|J3} means
- 2 can be removed from G2
- 2 can be removed from G3
- 2 can be removed from H1
- 2 can be removed from J1
Passo 9
Pointing Pairs
valore: 49.5
categoria doc: Intersection_Removal
Pair: between Box 9 and Col 9:
- 5 can be removed from A9
- 5 can be removed from B9
Passo 10
Line/Unit Reduction
valore: 62.7
categoria doc: Intersection_Removal
Line/Box Reduction: 2s in box 1 remove the following in the same box:
- 2 can be removed from A2
- 2 can be removed from A3
- 2 can be removed from B2
- 2 can be removed from B3
- 2 can be removed from C2
- 2 can be removed from C3
Passo 11
Unique Rectangle Type 1
valore: 61.6
categoria doc: Unique_Rectangle
Uniqueness Type 1 removing 3/5 at B5 because of B6,E6,E5
Passo 12
XYZ Wing
valore: 183.2
categoria doc: XYZ_Wing
XYZ-Wing pattern. Hinge: A7 (2/3/4), wings A9 H7, therefore
- 3 can be removed from C7
Passo 13
XY-Chain
valore: 193.1
categoria doc: XY_Chains
length=4, chain ends: G3 and H7
This proves 3 is the solution at one or possibly both ends of the chain
-3[G3]+6[G3]-6[G5]+9[G5]-9[G8]+2[G8]-2[H7]+3[H7]
- 3 can be removed from G7
- 3 can be removed from G9
- 3 can be removed from H1
Last candidate 6 in H1 changed to solution
Passo 14
Naked Singles
valore: 1.4
categoria doc: Getting_Started
Last candidate 3 in G3 changed to solution
Last candidate 9 in H5 changed to solution
Passo 15
Naked Singles
valore: 1.3
categoria doc: Getting_Started
Last candidate 6 in G5 changed to solution
Passo 16
Hidden Singles
valore: 2.6
categoria doc: Getting_Started
6 in A3 is last in row/column/box
Passo 17
Hidden Singles
valore: 2.5
categoria doc: Getting_Started
7 in A2 is last in row/box
7 in E3 is last in column
Passo 18
Naked Singles
valore: 1.2
categoria doc: Getting_Started
Last candidate 2 in E2 changed to solution
Passo 19
Naked Singles
valore: 1.2
categoria doc: Getting_Started
Last candidate 5 in H2 changed to solution
Passo 20
Naked Singles
valore: 1.1
categoria doc: Getting_Started
Last candidate 3 in H9 changed to solution
Last candidate 2 in J3 changed to solution
Passo 21
Naked Singles
valore: 1
categoria doc: Getting_Started
Last candidate 4 in A9 changed to solution
Last candidate 2 in H7 changed to solution
Last candidate 4 in J6 changed to solution
Passo 22
Naked Singles
valore: 0.8
categoria doc: Getting_Started
Last candidate 3 in A7 changed to solution
Last candidate 8 in C7 changed to solution
Last candidate 2 in G6 changed to solution
Last candidate 9 in G8 changed to solution
Passo 23
Naked Singles
valore: 0.6
categoria doc: Getting_Started
Last candidate 2 in A1 changed to solution
Last candidate 9 in B9 changed to solution
Last candidate 4 in C2 changed to solution
Last candidate 8 in G9 changed to solution
Last candidate 1 in J7 changed to solution
Passo 24
Naked Singles
valore: 0.4
categoria doc: Getting_Started
Last candidate 5 in A5 changed to solution
Last candidate 5 in B3 changed to solution
Last candidate 3 in C1 changed to solution
Last candidate 1 in G2 changed to solution
Last candidate 4 in G7 changed to solution
Last candidate 8 in J1 changed to solution
Last candidate 5 in J9 changed to solution
Passo 25
Naked Singles
valore: 0.2
categoria doc: Getting_Started
Last candidate 1 in B1 changed to solution
Last candidate 8 in B2 changed to solution
Last candidate 3 in B6 changed to solution
Last candidate 2 in B8 changed to solution
Last candidate 9 in C3 changed to solution
Last candidate 2 in C5 changed to solution
Last candidate 3 in E5 changed to solution
Passo 26
Naked Singles
valore: 0
categoria doc: Getting_Started
Last candidate 4 in B5 changed to solution
Last candidate 5 in C8 changed to solution
Last candidate 5 in E6 changed to solution