Passi risolutivi (34)
Passo 1
Hidden Singles
valore: 5.5
categoria doc: Getting_Started
3 in G6 is last in row/box
7 in H7 is last in row/box
8 in D4 is last in box
8 in E3 is last in row
Passo 2
Hidden Singles
valore: 5
categoria doc: Getting_Started
2 in H6 is last in column/box
4 in F4 is last in box
Passo 3
Naked Pair
valore: 23.5
categoria doc: Naked_Candidates
Naked Pair 6/9 on cells {D6|F6} means
- 6/9 can be removed from A6
- 6 can be removed from B6
Passo 4
Naked Pair
valore: 23
categoria doc: Naked_Candidates
Naked Pair 1/5 on cells {A6|B6} means
- 1 can be removed from A5
- 5 can be removed from B4
- 1 can be removed from B5
- 1 can be removed from C5
Passo 5
Hidden Pair
valore: 45.1
categoria doc: Hidden_Candidates
Hidden Pair 6/9 in Row A, on cells {A5|A8}
- removes 4 from A5
- removes 1/8 from A8
Passo 6
Hidden Singles
valore: 4.3
categoria doc: Getting_Started
4 in C5 is last in column/box
8 in A1 is last in row
8 in B9 is last in box
Passo 7
Hidden Singles
valore: 4.1
categoria doc: Getting_Started
7 in B5 is last in column/box
Passo 8
Pointing Pairs
valore: 60.2
categoria doc: Intersection_Removal
Pair: between Box 7 and Row H:
- 9 can be removed from H4
- 9 can be removed from H5
Passo 9
Line/Unit Reduction
valore: 78.7
categoria doc: Intersection_Removal
Line/Box Reduction: 9s in box 6 remove the following in the same box:
- 9 can be removed from D7
- 9 can be removed from D8
- 9 can be removed from F8
Passo 10
X-Wing
valore: 114.7
categoria doc: X_Wing_Strategy
(Row->Col) 4 taken off D2, based on DH19
(Row->Col) 4 taken off D3, based on DH19
(Row->Col) 4 taken off D7, based on DH19
(Row->Col) 4 taken off H3, based on DH19
Passo 11
Y-Wing
valore: 151.9
categoria doc: Y_Wing_Strategy
Y-Wing pattern. Hinge: B4 (3/6), wings B1 H4, therefore
- 5 can be removed from H1
Passo 12
W-Wing
valore: 94.2
categoria doc: W_Wings
W-Wing (single). Either there is a 1 in B6 or in D7. They are connected through 5 in B1/D1, therefore
- 1 can be removed from B7
Passo 13
Pointing Pairs
valore: 55.7
categoria doc: Intersection_Removal
Pair: between Box 3 and Row C:
- 1 can be removed from C2
- 1 can be removed from C3
Passo 14
Hidden Unique Rectangle
valore: 368.6
categoria doc: Hidden_Unique_Rectangles
Type 1: removing 6 at J8 because of GJ58 and two strong links on 8
Passo 15
Hidden Unique Rectangle
valore: 365.9
categoria doc: Hidden_Unique_Rectangles
Type 2: removing 5 at A3 because of AB36 and one strong link on 1 between B6 and B3
Passo 16
Aligned Pair Exclusion
valore: 508.4
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 D1 / D2 reduced from 3/4/5/9->3/4/5 and 1/3/5/6/7->1/3/5/6/7
- Pair 4/5 found in ALS {E2}
- Combinations of 1/5/6/7/9 found in ALS {D3,D6,D7,D8}
Note: some ALSs share cells and cannot be fully colour indicated
Passo 17
Hidden Unique Rectangle
valore: 360.4
categoria doc: Hidden_Unique_Rectangles
Type 2: removing 6 at F3 because of DF36 and one strong link on 9 between D6 and D3
Passo 18
Forcing Nets
valore: 142
categoria doc: Forcing_Nets
If C8 is not 1 then all candidates in E8 are removed so C8 must be 1
Depth: 4 len: 10
-1[C8]+1[C7]-1[D7]+5[D7]-5[E8]
-1[C8]+1[C7]-9[C7]+9[E7]-9[E8]
Last candidate 1 in C8 changed to solution
Passo 19
Pointing Pairs
valore: 50.3
categoria doc: Intersection_Removal
Pair: between Box 3 and Col 7:
- 2 can be removed from G7
- 2 can be removed from J7
Passo 20
3D Medusa
valore: 261.9
categoria doc: 3D_Medusa
(RULE 4): Uncoloured candidate 5 in D7 can see two different coloured candidates of 5 elsewhere.
(RULE 4): Uncoloured candidate 5 in D8 can see two different coloured candidates of 5 elsewhere.
(RULE 4): Uncoloured candidate 5 in E2 can see two different coloured candidates of 5 elsewhere.
Last candidate 1 in D7 changed to solution
Last candidate 7 in D8 changed to solution
Last candidate 4 in E2 changed to solution
Passo 21
Naked Singles
valore: 1.4
categoria doc: Getting_Started
Last candidate 2 in F8 changed to solution
Passo 22
Naked Singles
valore: 1.3
categoria doc: Getting_Started
Last candidate 3 in F9 changed to solution
Passo 23
Naked Singles
valore: 1.2
categoria doc: Getting_Started
Last candidate 4 in D9 changed to solution
Last candidate 9 in F1 changed to solution
Passo 24
Naked Singles
valore: 1.1
categoria doc: Getting_Started
Last candidate 6 in F6 changed to solution
Last candidate 4 in H1 changed to solution
Last candidate 1 in H9 changed to solution
Passo 25
Naked Singles
valore: 1
categoria doc: Getting_Started
Last candidate 9 in D6 changed to solution
Last candidate 6 in H5 changed to solution
Last candidate 2 in J9 changed to solution
Passo 26
Naked Singles
valore: 0.8
categoria doc: Getting_Started
Last candidate 9 in A5 changed to solution
Last candidate 8 in G5 changed to solution
Last candidate 5 in H4 changed to solution
Passo 27
Naked Singles
valore: 0.7
categoria doc: Getting_Started
Last candidate 6 in A8 changed to solution
Last candidate 3 in C4 changed to solution
Last candidate 9 in H3 changed to solution
Last candidate 9 in J4 changed to solution
Last candidate 1 in J5 changed to solution
Passo 28
Naked Singles
valore: 0.6
categoria doc: Getting_Started
Last candidate 6 in B4 changed to solution
Last candidate 2 in B7 changed to solution
Last candidate 5 in G8 changed to solution
Passo 29
Naked Singles
valore: 0.5
categoria doc: Getting_Started
Last candidate 9 in C7 changed to solution
Last candidate 9 in E8 changed to solution
Last candidate 6 in J7 changed to solution
Last candidate 8 in J8 changed to solution
Passo 30
Naked Singles
valore: 0.4
categoria doc: Getting_Started
Last candidate 5 in E7 changed to solution
Last candidate 4 in G7 changed to solution
Last candidate 5 in J2 changed to solution
Passo 31
Naked Singles
valore: 0.3
categoria doc: Getting_Started
Last candidate 1 in A2 changed to solution
Passo 32
Naked Singles
valore: 0.2
categoria doc: Getting_Started
Last candidate 4 in A3 changed to solution
Last candidate 5 in A6 changed to solution
Last candidate 5 in B3 changed to solution
Last candidate 7 in F2 changed to solution
Passo 33
Naked Singles
valore: 0.1
categoria doc: Getting_Started
Last candidate 3 in B1 changed to solution
Last candidate 1 in B6 changed to solution
Last candidate 2 in C2 changed to solution
Last candidate 6 in D3 changed to solution
Last candidate 1 in F3 changed to solution
Passo 34
Naked Singles
valore: 0
categoria doc: Getting_Started
Last candidate 7 in C3 changed to solution
Last candidate 5 in D1 changed to solution
Last candidate 3 in D2 changed to solution
Last candidate 6 in G2 changed to solution
Last candidate 2 in G3 changed to solution