Passi risolutivi (24)
Passo 1
Hidden Singles
valore: 5.3
categoria doc: Getting_Started
3 in J4 is last in column/box
5 in E5 is last in row/box
6 in D9 is last in row
6 in E3 is last in column/box
9 in E7 is last in column/box
Passo 2
Hidden Singles
valore: 4.6
categoria doc: Getting_Started
6 in A6 is last in row
6 in B8 is last in column/box
8 in E9 is last in row
Passo 3
Hidden Singles
valore: 4.3
categoria doc: Getting_Started
6 in G5 is last in row/column/box
8 in J7 is last in column/box
Passo 4
Hidden Singles
valore: 4
categoria doc: Getting_Started
8 in H1 is last in column/box
Passo 5
Hidden Singles
valore: 3.7
categoria doc: Getting_Started
3 in H2 is last in row/box
8 in G6 is last in column
9 in F1 is last in column
Passo 6
Hidden Singles
valore: 3.4
categoria doc: Getting_Started
3 in D1 is last in column/box
3 in F8 is last in row
Passo 7
Hidden Singles
valore: 3.2
categoria doc: Getting_Started
3 in C7 is last in row/column/box
Passo 8
Hidden Pair
valore: 30.8
categoria doc: Hidden_Candidates
Hidden Pair 8/9 in Box 2, on cells {B4|B5}
- removes 4/5/7 from B4
- removes 2/7 from B5
Passo 9
Pointing Pairs
valore: 45.4
categoria doc: Intersection_Removal
Pair: between Box 2 and Row C:
- 2 can be removed from C2
- 2 can be removed from C8
Passo 10
Hidden Singles
valore: 3
categoria doc: Getting_Started
2 in H8 is last in column
Passo 11
Hidden Singles
valore: 2.8
categoria doc: Getting_Started
2 in C5 is last in column
2 in J6 is last in row/box
Passo 12
Pointing Pairs
valore: 39.6
categoria doc: Intersection_Removal
Pair: between Box 2 and Row C:
- 7 can be removed from C2
Passo 13
Pointing Pairs
valore: 39.2
categoria doc: Intersection_Removal
Pair: between Box 5 and Row F:
- 7 can be removed from F3
Passo 14
Line/Unit Reduction
valore: 51.2
categoria doc: Intersection_Removal
Line/Box Reduction: 7s in box 7 remove the following in the same box:
- 7 can be removed from G2
- 7 can be removed from J1
Passo 15
Naked Pair
valore: 12.5
categoria doc: Naked_Candidates
Naked Pair 4/5 on cells {G2|G8} means
- 4 can be removed from G3
- 5 can be removed from G4
Passo 16
Hidden Singles
valore: 2.5
categoria doc: Getting_Started
5 in H6 is last in box
Passo 17
X-Wing
valore: 71
categoria doc: X_Wing_Strategy
(Col->Row) 2 taken off B9, based on AF39
Passo 18
Hidden Pair
valore: 22.8
categoria doc: Hidden_Candidates
Hidden Pair 1/2 in Col 9, on cells {A9|F9}
- removes 4/5 from A9
- removes 4 from F9
Passo 19
Rectangle Elimination
valore: 56.4
categoria doc: Rectangle_Elimination
If +4[B2] then -4[B9] forcing +4[H9] which removes all 4s from box 7, so B2 cannot be 4
Passo 20
Rectangle Elimination
valore: 55.7
categoria doc: Rectangle_Elimination
If +4[D2] then -4[G2] forcing +4[G8] which removes all 4s from box 6, so D2 cannot be 4
Passo 21
Chute Remote Pair
valore: 54.3
categoria doc: Chute_Remote_Pairs
1 cannot be set in the yellow cells {E4,E5,E6} and with the Remote Pair in D2 and F9 it means:
- 2 can be removed from D7
- 2 can be removed from F3
Last candidate 4 in D7 changed to solution
Last candidate 1 in E8 changed to solution
Last candidate 2 in F9 changed to solution
Passo 22
Naked Singles
valore: 0.6
categoria doc: Getting_Started
Last candidate 1 in A9 changed to solution
Last candidate 2 in B7 changed to solution
Last candidate 8 in D4 changed to solution
Last candidate 1 in D5 changed to solution
Last candidate 7 in F5 changed to solution
Last candidate 4 in F6 changed to solution
Last candidate 9 in H5 changed to solution
Last candidate 9 in B4 changed to solution
Last candidate 8 in B5 changed to solution
Last candidate 7 in C6 changed to solution
Last candidate 2 in D2 changed to solution
Last candidate 1 in F3 changed to solution
Last candidate 7 in G4 changed to solution
Last candidate 7 in J3 changed to solution
Last candidate 5 in J9 changed to solution
Passo 23
Naked Singles
valore: 0.2
categoria doc: Getting_Started
Last candidate 4 in B9 changed to solution
Last candidate 5 in C8 changed to solution
Last candidate 9 in G3 changed to solution
Last candidate 4 in G8 changed to solution
Last candidate 4 in H3 changed to solution
Last candidate 7 in H9 changed to solution
Last candidate 1 in J1 changed to solution
Last candidate 2 in A3 changed to solution
Last candidate 4 in C4 changed to solution
Last candidate 5 in G2 changed to solution
Passo 24
Naked Singles
valore: 0
categoria doc: Getting_Started
Last candidate 5 in A4 changed to solution
Last candidate 7 in B2 changed to solution
Last candidate 1 in C2 changed to solution
Last candidate 4 in E2 changed to solution
Last candidate 4 in A1 changed to solution
Last candidate 5 in B1 changed to solution
Last candidate 7 in E1 changed to solution