Passi risolutivi (26)
Passo 1
Naked Singles
valore: 0
categoria doc: Getting_Started
Last candidate 6 in E8 changed to solution
Passo 2
Naked Singles
valore: 2.8
categoria doc: Getting_Started
Last candidate 3 in D8 changed to solution
Passo 3
Naked Singles
valore: 2.8
categoria doc: Getting_Started
Last candidate 9 in F8 changed to solution
Passo 4
Naked Singles
valore: 2.7
categoria doc: Getting_Started
Last candidate 2 in H8 changed to solution
Passo 5
Naked Singles
valore: 2.7
categoria doc: Getting_Started
Last candidate 4 in A8 changed to solution
Passo 6
Naked Singles
valore: 2.6
categoria doc: Getting_Started
Last candidate 1 in B8 changed to solution
Passo 7
Hidden Singles
valore: 4.3
categoria doc: Getting_Started
1 in D4 is last in column/box
2 in G5 is last in column
3 in F2 is last in row/box
3 in G9 is last in row/column/box
4 in B1 is last in row
4 in C6 is last in column/box
4 in J7 is last in row/column/box
9 in G3 is last in column/box
Passo 8
Hidden Singles
valore: 3.4
categoria doc: Getting_Started
1 in C3 is last in column
1 in G7 is last in column/box
2 in D2 is last in box
2 in F6 is last in row
3 in A6 is last in column/box
3 in C1 is last in row
6 in D6 is last in row/box
Passo 9
Naked Singles
valore: 1.5
categoria doc: Getting_Started
Last candidate 7 in J6 changed to solution
Passo 10
Naked Singles
valore: 1.4
categoria doc: Getting_Started
Last candidate 8 in G6 changed to solution
Passo 11
Naked Singles
valore: 1.4
categoria doc: Getting_Started
Last candidate 7 in G1 changed to solution
Last candidate 6 in G4 changed to solution
Passo 12
Hidden Singles
valore: 2.3
categoria doc: Getting_Started
2 in A1 is last in column/box
2 in C9 is last in row
7 in A4 is last in column/box
Passo 13
Pointing Pairs
valore: 31.8
categoria doc: Intersection_Removal
Pair: between Box 7 and Col 2:
- 6 can be removed from B2
- 6 can be removed from C2
Passo 14
Y-Wing
valore: 83.6
categoria doc: Y_Wing_Strategy
Y-Wing pattern. Hinge: C4 (8/9), wings C2 J4, therefore
- 5 can be removed from J2
Passo 15
W-Wing
valore: 51.6
categoria doc: W_Wings
W-Wing (single). Either there is a 5 in C2 or in E5. They are connected through 8 in C4/F4, therefore
- 5 can be removed from E2
Passo 16
Rectangle Elimination
valore: 50.9
categoria doc: Rectangle_Elimination
If +5[A3] then -5[A9] forcing +5[E9] which removes all 5s from box 4, so A3 cannot be 5
Passo 17
Hidden Singles
valore: 2
categoria doc: Getting_Started
5 in C2 is last in box
Passo 18
Pointing Pairs
valore: 28.5
categoria doc: Intersection_Removal
Pair: between Box 7 and Col 1:
- 5 can be removed from E1
Passo 19
Chute Remote Pair
valore: 46.8
categoria doc: Chute_Remote_Pairs
5 cannot be set in the yellow cells {E1,E2,E3} and with the Remote Pair in D7 and F4 it means:
- 8 can be removed from F7
Passo 20
Rectangle Elimination
valore: 46.1
categoria doc: Rectangle_Elimination
If +9[H5] then -9[B5] forcing +9[B9] which removes all 9s from box 9, so H5 cannot be 9
Last candidate 5 in H5 changed to solution
Passo 21
Naked Singles
valore: 0.9
categoria doc: Getting_Started
Last candidate 8 in E5 changed to solution
Last candidate 8 in H1 changed to solution
Last candidate 9 in J4 changed to solution
Passo 22
Naked Singles
valore: 0.7
categoria doc: Getting_Started
Last candidate 8 in C4 changed to solution
Last candidate 1 in E1 changed to solution
Last candidate 5 in F4 changed to solution
Last candidate 6 in H2 changed to solution
Last candidate 6 in J9 changed to solution
Passo 23
Naked Singles
valore: 0.5
categoria doc: Getting_Started
Last candidate 7 in E2 changed to solution
Last candidate 7 in F7 changed to solution
Last candidate 5 in J1 changed to solution
Last candidate 1 in J2 changed to solution
Passo 24
Naked Singles
valore: 0.4
categoria doc: Getting_Started
Last candidate 8 in B2 changed to solution
Last candidate 5 in E9 changed to solution
Last candidate 8 in F3 changed to solution
Last candidate 9 in H7 changed to solution
Passo 25
Naked Singles
valore: 0.2
categoria doc: Getting_Started
Last candidate 6 in A3 changed to solution
Last candidate 8 in A9 changed to solution
Last candidate 9 in B9 changed to solution
Last candidate 6 in C7 changed to solution
Last candidate 5 in D3 changed to solution
Last candidate 8 in D7 changed to solution
Last candidate 7 in H9 changed to solution
Passo 26
Naked Singles
valore: 0.1
categoria doc: Getting_Started
Last candidate 5 in A7 changed to solution
Last candidate 7 in B3 changed to solution
Last candidate 6 in B5 changed to solution
Last candidate 9 in C5 changed to solution