Passi risolutivi (14)
Passo 1
Naked Singles
valore: 0
categoria doc: Getting_Started
Last candidate 5 in C6 changed to solution
Passo 2
Hidden Singles
valore: 5
categoria doc: Getting_Started
2 in B3 is last in column
2 in G5 is last in row
2 in H1 is last in box
3 in J9 is last in row/column/box
4 in D9 is last in row
8 in J1 is last in row/column/box
9 in F4 is last in row
Passo 3
Hidden Singles
valore: 4.1
categoria doc: Getting_Started
4 in E3 is last in column
9 in A1 is last in column
Passo 4
Naked Pair
valore: 19.4
categoria doc: Naked_Candidates
Naked Pair 1/6 on cells {B1|F1} means
- 1/6 can be removed from D1
- 1/6 can be removed from E1
Passo 5
Naked Pair
valore: 19.1
categoria doc: Naked_Candidates
Naked Pair 3/5 on cells {D1|E1} means
- 3/5 can be removed from E2
Passo 6
Pointing Pairs
valore: 56.5
categoria doc: Intersection_Removal
Pair: between Box 2 and Col 5:
- 3 can be removed from D5
- 3 can be removed from E5
Passo 7
X-Wing
valore: 106.5
categoria doc: X_Wing_Strategy
(Col->Row) 6 taken off B2, based on CG28
(Col->Row) 6 taken off E2, based on CG28
(Col->Row) 6 taken off H2, based on CG28
(Col->Row) 6 taken off J2, based on CG28
(Col->Row) 6 taken off B8, based on CG28
(Col->Row) 6 taken off E8, based on CG28
(Col->Row) 6 taken off H8, based on CG28
(Col->Row) 6 taken off J8, based on CG28
Passo 8
Pointing Pairs
valore: 52.4
categoria doc: Intersection_Removal
Pair: between Box 4 and Row F:
- 6 can be removed from F6
- 6 can be removed from F9
Passo 9
XY-Chain
valore: 329.3
categoria doc: XY_Chains
length=7, chain ends: J4 and B2
This proves 4 is the solution at one or possibly both ends of the chain
-4[J4]+7[J4]-7[J3]+6[J3]-6[F3]+7[F3]-7[E2]+1[E2]-1[F1]+6[F1]-6[B1]+1[B1]-1[B2]+4[B2]
- 4 can be removed from B4
Passo 10
Hidden Singles
valore: 3.4
categoria doc: Getting_Started
4 in A6 is last in box
4 in B2 is last in row
4 in J4 is last in column
Passo 11
Hidden Singles
valore: 3
categoria doc: Getting_Started
4 in H8 is last in row/column/box
8 in E6 is last in column
Passo 12
Hidden Singles
valore: 2.9
categoria doc: Getting_Started
2 in F6 is last in column/box
Passo 13
Naked Singles
valore: 1.2
categoria doc: Getting_Started
Last candidate 6 in F1 changed to solution
Last candidate 7 in F3 changed to solution
Last candidate 6 in J3 changed to solution
Last candidate 1 in B1 changed to solution
Last candidate 7 in B4 changed to solution
Last candidate 8 in B5 changed to solution
Last candidate 5 in B8 changed to solution
Last candidate 6 in B9 changed to solution
Last candidate 1 in C8 changed to solution
Last candidate 1 in E2 changed to solution
Last candidate 3 in E4 changed to solution
Last candidate 2 in E9 changed to solution
Last candidate 9 in G2 changed to solution
Last candidate 6 in G8 changed to solution
Last candidate 5 in H9 changed to solution
Last candidate 9 in J8 changed to solution
Passo 14
Naked Singles
valore: 0.1
categoria doc: Getting_Started
Last candidate 3 in A2 changed to solution
Last candidate 1 in A5 changed to solution
Last candidate 7 in A7 changed to solution
Last candidate 2 in A8 changed to solution
Last candidate 8 in A9 changed to solution
Last candidate 6 in C2 changed to solution
Last candidate 3 in C5 changed to solution
Last candidate 1 in D4 changed to solution
Last candidate 6 in D7 changed to solution
Last candidate 5 in E1 changed to solution
Last candidate 9 in E7 changed to solution
Last candidate 7 in E8 changed to solution
Last candidate 7 in H2 changed to solution
Last candidate 6 in H6 changed to solution
Last candidate 1 in H7 changed to solution
Last candidate 5 in J2 changed to solution
Last candidate 7 in J5 changed to solution
Last candidate 3 in D1 changed to solution
Last candidate 5 in D5 changed to solution
Last candidate 7 in D6 changed to solution
Last candidate 6 in E5 changed to solution
Last candidate 9 in H5 changed to solution