Passi risolutivi (28)
Passo 1
Hidden Singles
valore: 5.3
categoria doc: Getting_Started
3 in B3 is last in row/column/box
3 in E9 is last in box
3 in F6 is last in row
3 in J8 is last in column
4 in E3 is last in row/box
5 in E5 is last in column/box
Passo 2
Hidden Singles
valore: 4.6
categoria doc: Getting_Started
3 in H5 is last in row/column/box
9 in F4 is last in row/box
9 in J3 is last in column
Passo 3
Hidden Singles
valore: 4.3
categoria doc: Getting_Started
2 in F1 is last in row
Passo 4
Hidden Singles
valore: 4.2
categoria doc: Getting_Started
2 in E4 is last in row
Passo 5
Y-Wing
valore: 162.9
categoria doc: Y_Wing_Strategy
Y-Wing pattern. Hinge: F2 (5/8), wings E1 J2, therefore
- 6 can be removed from G1
- 6 can be removed from H1
Passo 6
Rectangle Elimination
valore: 101.1
categoria doc: Rectangle_Elimination
If +5[A7] then -5[A3] forcing +5[D3] which removes all 5s from box 6, so A7 cannot be 5
Passo 7
Rectangle Elimination
valore: 100.4
categoria doc: Rectangle_Elimination
If +5[D9] then -5[D3] forcing +5[A3] which removes all 5s from box 3, so D9 cannot be 5
Passo 8
WXYZ Wing
valore: 398.9
categoria doc: WXYZ_Wing
WXYZ Wing Type 1: The four cells {G1,G8,H1,H3} contain in total 1/5/6/7 with the hinge on G1.
Non-Restricted candidate 6 determines the 'wing' cells (in yellow) and one of those 6s must be true. Therefore...
- 6 can be removed from H7
Passo 9
Rectangle Elimination
valore: 99
categoria doc: Rectangle_Elimination
If +6[D3] then -6[H3] forcing +6[H6] which removes all 6s from box 5, so D3 cannot be 6
Last candidate 5 in D3 changed to solution
Passo 10
Naked Singles
valore: 1.9
categoria doc: Getting_Started
Last candidate 2 in D8 changed to solution
Last candidate 8 in F2 changed to solution
Passo 11
Naked Singles
valore: 1.8
categoria doc: Getting_Started
Last candidate 6 in E1 changed to solution
Last candidate 5 in F7 changed to solution
Passo 12
Hidden Singles
valore: 3.3
categoria doc: Getting_Started
2 in A5 is last in row
2 in B9 is last in column/box
Passo 13
Hidden Singles
valore: 3.1
categoria doc: Getting_Started
7 in A6 is last in row/box
Passo 14
Naked Singles
valore: 1.5
categoria doc: Getting_Started
Last candidate 8 in E6 changed to solution
Passo 15
Naked Singles
valore: 1.4
categoria doc: Getting_Started
Last candidate 6 in D6 changed to solution
Last candidate 7 in E7 changed to solution
Passo 16
Naked Singles
valore: 1.3
categoria doc: Getting_Started
Last candidate 7 in D4 changed to solution
Last candidate 8 in D9 changed to solution
Passo 17
Hidden Singles
valore: 2.3
categoria doc: Getting_Started
6 in H3 is last in row
8 in A1 is last in row
8 in H7 is last in row
Passo 18
Naked Singles
valore: 1
categoria doc: Getting_Started
Last candidate 1 in A3 changed to solution
Last candidate 5 in J2 changed to solution
Passo 19
Naked Singles
valore: 0.9
categoria doc: Getting_Started
Last candidate 9 in B1 changed to solution
Passo 20
Naked Singles
valore: 0.9
categoria doc: Getting_Started
Last candidate 6 in B5 changed to solution
Last candidate 5 in C1 changed to solution
Passo 21
Hidden Singles
valore: 1.3
categoria doc: Getting_Started
5 in A8 is last in row/box
5 in G9 is last in column
6 in C2 is last in row
Passo 22
Naked Singles
valore: 0.6
categoria doc: Getting_Started
Last candidate 4 in A2 changed to solution
Last candidate 6 in G8 changed to solution
Passo 23
Naked Singles
valore: 0.5
categoria doc: Getting_Started
Last candidate 6 in A7 changed to solution
Last candidate 1 in J7 changed to solution
Passo 24
Naked Singles
valore: 0.5
categoria doc: Getting_Started
Last candidate 4 in B7 changed to solution
Last candidate 7 in J9 changed to solution
Passo 25
Naked Singles
valore: 0.4
categoria doc: Getting_Started
Last candidate 1 in B4 changed to solution
Last candidate 1 in C9 changed to solution
Last candidate 4 in H9 changed to solution
Last candidate 8 in J5 changed to solution
Passo 26
Naked Singles
valore: 0.2
categoria doc: Getting_Started
Last candidate 9 in C5 changed to solution
Last candidate 4 in G4 changed to solution
Last candidate 1 in H6 changed to solution
Last candidate 6 in J4 changed to solution
Passo 27
Naked Singles
valore: 0.1
categoria doc: Getting_Started
Last candidate 8 in C4 changed to solution
Last candidate 4 in C6 changed to solution
Last candidate 7 in G5 changed to solution
Last candidate 9 in G6 changed to solution
Last candidate 7 in H1 changed to solution
Passo 28
Naked Singles
valore: 0
categoria doc: Getting_Started
Last candidate 1 in G1 changed to solution