Passi risolutivi (33)
Passo 1
Naked Singles
valore: 1
categoria doc: Getting_Started
Last candidate 6 in H7 changed to solution
Passo 2
Hidden Singles
valore: 5.4
categoria doc: Getting_Started
1 in A6 is last in column/box
4 in E9 is last in row/box
8 in F3 is last in column/box
9 in A8 is last in row/column/box
9 in H6 is last in row/box
Passo 3
Hidden Singles
valore: 5
categoria doc: Getting_Started
1 in J3 is last in column
Passo 4
Hidden Singles
valore: 4.8
categoria doc: Getting_Started
1 in G7 is last in column
Passo 5
Naked Pair
valore: 22.8
categoria doc: Naked_Candidates
Naked Pair 5/8 on cells {E5|E6} means
- 5 can be removed from D4
- 5 can be removed from E1
- 5 can be removed from E2
- 5 can be removed from E4
- 8 can be removed from E8
- 5 can be removed from F6
Last candidate 6 in F6 changed to solution
Passo 6
Naked Singles
valore: 2.1
categoria doc: Getting_Started
Last candidate 3 in G6 changed to solution
Passo 7
Hidden Singles
valore: 4
categoria doc: Getting_Started
3 in A5 is last in column/box
6 in D9 is last in row/column/box
Passo 8
Hidden Singles
valore: 3.9
categoria doc: Getting_Started
3 in H9 is last in column
Passo 9
Hidden Singles
valore: 3.7
categoria doc: Getting_Started
3 in B3 is last in column
Passo 10
Hidden Singles
valore: 3.6
categoria doc: Getting_Started
7 in A3 is last in column
Passo 11
Naked Pair
valore: 16.6
categoria doc: Naked_Candidates
Naked Pair 2/5 on cells {H1|H3} means
- 2 can be removed from G1
- 2/5 can be removed from J1
- 2/5 can be removed from J2
Passo 12
Line/Unit Reduction
valore: 65.5
categoria doc: Intersection_Removal
Line/Box Reduction: 8s in box 3 remove the following in the same box:
- 8 can be removed from B7
- 8 can be removed from C8
Passo 13
Unique Rectangle Type 1
valore: 64.4
categoria doc: Unique_Rectangle
Uniqueness Type 1 removing 2/5 at C1 because of C3,H3,H1
Passo 14
Rectangle Elimination
valore: 79.8
categoria doc: Rectangle_Elimination
If +2[C5] then -2[C8] forcing +2[J8] which removes all 2s from Box 8, so C5 cannot be 2
Passo 15
Pointing Pairs
valore: 47.5
categoria doc: Intersection_Removal
Triple: between Box 2 and Col 4:
- 2 can be removed from J4
Passo 16
Unique Rectangle 2+
valore: 155.4
categoria doc: Unique_Rectangles
Uniqueness Type 4 (Col) removing 7 from roof because of D4,E4,D1,E1
Passo 17
Hidden Unique Rectangle
valore: 308.1
categoria doc: Hidden_Unique_Rectangles
Type 1: removing 7 at D8 because of DJ78 and two strong links on 8
Passo 18
WXYZ Wing
valore: 302.6
categoria doc: WXYZ_Wing
WXYZ Wing Type 1: The four cells {A9,A7,B7,G9} contain in total 2/4/5/7 with the hinge on A9.
Non-Restricted candidate 7 determines the 'wing' cells (in yellow) and one of those 7s must be true. Therefore...
- 7 can be removed from B9
- 7 can be removed from J7
Last candidate 8 in J7 changed to solution
Passo 19
Hidden Singles
valore: 2.9
categoria doc: Getting_Started
7 in B7 is last in row/box
8 in D8 is last in row/column/box
Passo 20
Naked Singles
valore: 1.3
categoria doc: Getting_Started
Last candidate 5 in D7 changed to solution
Passo 21
Naked Singles
valore: 1.3
categoria doc: Getting_Started
Last candidate 4 in A7 changed to solution
Passo 22
Hidden Singles
valore: 2.5
categoria doc: Getting_Started
3 in E8 is last in column/box
Passo 23
Naked Singles
valore: 1.1
categoria doc: Getting_Started
Last candidate 7 in E2 changed to solution
Passo 24
Naked Singles
valore: 1.1
categoria doc: Getting_Started
Last candidate 3 in D2 changed to solution
Last candidate 9 in E4 changed to solution
Passo 25
Naked Singles
valore: 0.9
categoria doc: Getting_Started
Last candidate 9 in D1 changed to solution
Last candidate 7 in D4 changed to solution
Last candidate 1 in E1 changed to solution
Last candidate 6 in J2 changed to solution
Passo 26
Naked Singles
valore: 0.9
categoria doc: Getting_Started
Last candidate 7 in G1 changed to solution
Passo 27
Naked Singles
valore: 0.8
categoria doc: Getting_Started
Last candidate 2 in G9 changed to solution
Last candidate 3 in J1 changed to solution
Passo 28
Naked Singles
valore: 0.7
categoria doc: Getting_Started
Last candidate 5 in A9 changed to solution
Last candidate 6 in G5 changed to solution
Last candidate 7 in J8 changed to solution
Passo 29
Naked Singles
valore: 0.5
categoria doc: Getting_Started
Last candidate 2 in A2 changed to solution
Last candidate 8 in B9 changed to solution
Last candidate 1 in F8 changed to solution
Passo 30
Naked Singles
valore: 0.3
categoria doc: Getting_Started
Last candidate 6 in A4 changed to solution
Last candidate 5 in C3 changed to solution
Last candidate 2 in C8 changed to solution
Last candidate 1 in C9 changed to solution
Last candidate 5 in F2 changed to solution
Last candidate 7 in F9 changed to solution
Passo 31
Naked Singles
valore: 0.2
categoria doc: Getting_Started
Last candidate 4 in B1 changed to solution
Last candidate 4 in C4 changed to solution
Last candidate 8 in C5 changed to solution
Last candidate 2 in F1 changed to solution
Last candidate 2 in H3 changed to solution
Passo 32
Naked Singles
valore: 0.1
categoria doc: Getting_Started
Last candidate 5 in B6 changed to solution
Last candidate 6 in C1 changed to solution
Last candidate 5 in E5 changed to solution
Last candidate 5 in H1 changed to solution
Last candidate 5 in J4 changed to solution
Passo 33
Naked Singles
valore: 0
categoria doc: Getting_Started
Last candidate 2 in B4 changed to solution
Last candidate 8 in E6 changed to solution
Last candidate 2 in J5 changed to solution
Last candidate 4 in J6 changed to solution