Passi risolutivi (38)
Passo 1
Naked Singles
valore: 1
categoria doc: Getting_Started
Last candidate 3 in C3 changed to solution
Passo 2
Naked Singles
valore: 2
categoria doc: Getting_Started
Last candidate 9 in A3 changed to solution
Last candidate 1 in J3 changed to solution
Passo 3
Hidden Singles
valore: 5.1
categoria doc: Getting_Started
2 in J8 is last in column/box
3 in A4 is last in row/box
5 in E5 is last in column/box
9 in B5 is last in row/box
9 in G4 is last in column
Passo 4
Naked Singles
valore: 2.3
categoria doc: Getting_Started
Last candidate 6 in J5 changed to solution
Passo 5
Hidden Singles
valore: 4.5
categoria doc: Getting_Started
9 in J9 is last in row/box
Passo 6
Pointing Pairs
valore: 64.8
categoria doc: Intersection_Removal
Pair: between Box 5 and Row F:
- 2 can be removed from F1
- 2 can be removed from F2
Passo 7
Pointing Pairs
valore: 64
categoria doc: Intersection_Removal
Pair: between Box 2 and Row C:
- 4 can be removed from C8
- 4 can be removed from C9
Passo 8
Pointing Pairs
valore: 63.1
categoria doc: Intersection_Removal
Pair: between Box 5 and Col 6:
- 7 can be removed from B6
- 7 can be removed from C6
Passo 9
Rectangle Elimination
valore: 104.5
categoria doc: Rectangle_Elimination
If +8[A5] then -8[A7] forcing +8[G7] which removes all 8s from Box 8, so A5 cannot be 8
Passo 10
Rectangle Elimination
valore: 103.9
categoria doc: Rectangle_Elimination
If +8[G6] then -8[B6] forcing +8[B9] which removes all 8s from Box 9, so G6 cannot be 8
Passo 11
Pointing Pairs
valore: 61.9
categoria doc: Intersection_Removal
Pair: between Box 8 and Col 5:
- 8 can be removed from C5
Passo 12
3D Medusa
valore: 327.9
categoria doc: 3D_Medusa
(RULE 5): Uncoloured candidate 2 in C6 can see coloured 2 elsewhere and an oppositely coloured 4 in its own cell. It can be removed.
Passo 13
Aligned Pair Exclusion
valore: 570
categoria doc: Aligned_Pair_Exclusion
Some solution combinations in the two gray cells would empty at least one of the coloured cells. Removing those combinations create eliminations in the gray cells.
Pair D6 / H4 reduced from 1/7->7 and 2/4->2/4
- Combinations of 1/2/6 found in ALS {D4,F4}
- Combinations of 1/3/4 found in ALS {G6,J6}
Last candidate 7 in D6 changed to solution
Passo 14
WXYZ Wing
valore: 393.4
categoria doc: WXYZ_Wing
WXYZ Wing Type 1: The four cells {G6,F6,H4,J6} contain in total 1/2/3/4 with the hinge on G6.
Non-Restricted candidate 2 determines the 'wing' cells (in yellow) and one of those 2s must be true. Therefore...
- 2 can be removed from F4
Passo 15
Hidden Singles
valore: 3.9
categoria doc: Getting_Started
2 in F6 is last in row/box
Passo 16
Naked Singles
valore: 1.9
categoria doc: Getting_Started
Last candidate 8 in B6 changed to solution
Passo 17
Naked Singles
valore: 1.8
categoria doc: Getting_Started
Last candidate 7 in B9 changed to solution
Passo 18
Naked Singles
valore: 1.7
categoria doc: Getting_Started
Last candidate 2 in B1 changed to solution
Passo 19
Hidden Singles
valore: 3.3
categoria doc: Getting_Started
2 in E2 is last in row/column/box
7 in F8 is last in row/column/box
Passo 20
Hidden Singles
valore: 3.1
categoria doc: Getting_Started
9 in D8 is last in column/box
9 in F1 is last in row
Passo 21
Hidden Singles
valore: 3
categoria doc: Getting_Started
8 in D9 is last in row/box
Passo 22
Hidden Singles
valore: 2.8
categoria doc: Getting_Started
8 in H5 is last in row
Passo 23
Naked Singles
valore: 1.3
categoria doc: Getting_Started
Last candidate 1 in G5 changed to solution
Passo 24
Naked Singles
valore: 1.3
categoria doc: Getting_Started
Last candidate 7 in A5 changed to solution
Passo 25
Naked Singles
valore: 1.2
categoria doc: Getting_Started
Last candidate 5 in A1 changed to solution
Last candidate 2 in C5 changed to solution
Passo 26
Naked Singles
valore: 1.1
categoria doc: Getting_Started
Last candidate 8 in A2 changed to solution
Passo 27
Naked Singles
valore: 1
categoria doc: Getting_Started
Last candidate 4 in A8 changed to solution
Passo 28
Naked Singles
valore: 0.9
categoria doc: Getting_Started
Last candidate 1 in A7 changed to solution
Last candidate 3 in E8 changed to solution
Passo 29
Naked Singles
valore: 0.9
categoria doc: Getting_Started
Last candidate 5 in C9 changed to solution
Passo 30
Naked Singles
valore: 0.8
categoria doc: Getting_Started
Last candidate 8 in C8 changed to solution
Passo 31
Naked Singles
valore: 0.8
categoria doc: Getting_Started
Last candidate 5 in G8 changed to solution
Passo 32
Naked Singles
valore: 0.7
categoria doc: Getting_Started
Last candidate 4 in J7 changed to solution
Passo 33
Naked Singles
valore: 0.5
categoria doc: Getting_Started
Last candidate 6 in E7 changed to solution
Last candidate 3 in H9 changed to solution
Last candidate 3 in J6 changed to solution
Passo 34
Naked Singles
valore: 0.3
categoria doc: Getting_Started
Last candidate 5 in F7 changed to solution
Last candidate 1 in F9 changed to solution
Last candidate 4 in G6 changed to solution
Last candidate 8 in G7 changed to solution
Last candidate 6 in G9 changed to solution
Last candidate 4 in H1 changed to solution
Last candidate 5 in J2 changed to solution
Passo 35
Naked Singles
valore: 0.2
categoria doc: Getting_Started
Last candidate 1 in C6 changed to solution
Last candidate 1 in E1 changed to solution
Last candidate 4 in E9 changed to solution
Last candidate 6 in F4 changed to solution
Last candidate 2 in H4 changed to solution
Passo 36
Naked Singles
valore: 0.1
categoria doc: Getting_Started
Last candidate 4 in C4 changed to solution
Last candidate 6 in D1 changed to solution
Last candidate 1 in D4 changed to solution
Last candidate 3 in F2 changed to solution
Passo 37
Naked Singles
valore: 0
categoria doc: Getting_Started
Last candidate 7 in C1 changed to solution
Last candidate 4 in D2 changed to solution
Last candidate 7 in G2 changed to solution
Passo 38
Naked Singles
valore: 0
categoria doc: Getting_Started
Last candidate 6 in C2 changed to solution
Last candidate 3 in G1 changed to solution