Passi risolutivi (31)
Passo 1
Hidden Singles
valore: 5.6
categoria doc: Getting_Started
4 in C9 is last in column/box
5 in A3 is last in row/box
5 in G9 is last in column/box
5 in H4 is last in row
8 in B6 is last in column/box
9 in E3 is last in column/box
Passo 2
Naked Singles
valore: 1
categoria doc: Getting_Started
Last candidate 1 in B3 changed to solution
Passo 3
Naked Singles
valore: 2.4
categoria doc: Getting_Started
Last candidate 2 in H3 changed to solution
Passo 4
Naked Singles
valore: 2.3
categoria doc: Getting_Started
Last candidate 8 in G3 changed to solution
Passo 5
Hidden Singles
valore: 4.3
categoria doc: Getting_Started
3 in G5 is last in box
4 in A4 is last in column
6 in B7 is last in row
8 in J9 is last in row/box
9 in D6 is last in column/box
Passo 6
Naked Singles
valore: 1.7
categoria doc: Getting_Started
Last candidate 1 in E9 changed to solution
Last candidate 3 in H7 changed to solution
Passo 7
Naked Singles
valore: 1.6
categoria doc: Getting_Started
Last candidate 6 in D9 changed to solution
Last candidate 6 in H8 changed to solution
Passo 8
Naked Singles
valore: 1.5
categoria doc: Getting_Started
Last candidate 9 in F9 changed to solution
Last candidate 2 in G8 changed to solution
Passo 9
Naked Singles
valore: 1.4
categoria doc: Getting_Started
Last candidate 8 in F8 changed to solution
Last candidate 9 in J7 changed to solution
Passo 10
Naked Singles
valore: 1.3
categoria doc: Getting_Started
Last candidate 7 in C7 changed to solution
Passo 11
Naked Singles
valore: 1.2
categoria doc: Getting_Started
Last candidate 1 in A8 changed to solution
Last candidate 2 in E7 changed to solution
Passo 12
Naked Singles
valore: 1.2
categoria doc: Getting_Started
Last candidate 9 in C8 changed to solution
Passo 13
Hidden Singles
valore: 2.3
categoria doc: Getting_Started
4 in E5 is last in column
Passo 14
Naked Singles
valore: 1
categoria doc: Getting_Started
Last candidate 7 in E6 changed to solution
Passo 15
Naked Singles
valore: 1
categoria doc: Getting_Started
Last candidate 3 in E8 changed to solution
Passo 16
Naked Singles
valore: 0.9
categoria doc: Getting_Started
Last candidate 7 in D8 changed to solution
Last candidate 8 in E1 changed to solution
Passo 17
Naked Singles
valore: 0.9
categoria doc: Getting_Started
Last candidate 5 in E2 changed to solution
Passo 18
Hidden Singles
valore: 1.7
categoria doc: Getting_Started
5 in F5 is last in row/column/box
8 in C2 is last in row/column/box
Passo 19
Naked Pair
valore: 7.6
categoria doc: Naked_Candidates
Naked Pair 1/2 on cells {C5|D5} means
- 2 can be removed from A5
- 1/2 can be removed from J5
Passo 20
Pointing Pairs
valore: 21.9
categoria doc: Intersection_Removal
Pair: between Box 7 and Col 2:
- 1 can be removed from D2
- 1 can be removed from F2
Passo 21
Pointing Pairs
valore: 21
categoria doc: Intersection_Removal
Pair: between Box 1 and Col 1:
- 2 can be removed from D1
- 2 can be removed from F1
Passo 22
Pointing Pairs
valore: 20.6
categoria doc: Intersection_Removal
Pair: between Box 8 and Row J:
- 7 can be removed from J2
Passo 23
Line/Unit Reduction
valore: 27
categoria doc: Intersection_Removal
Line/Box Reduction: 1s in box 8 remove the following in the same box:
- 1 can be removed from J4
Passo 24
Y-Wing
valore: 52.8
categoria doc: Y_Wing_Strategy
Y-Wing pattern. Hinge: A1 (2/7), wings A6 G1, therefore
- 6 can be removed from G6
Last candidate 4 in G6 changed to solution
Passo 25
Naked Singles
valore: 0.6
categoria doc: Getting_Started
Last candidate 1 in H6 changed to solution
Passo 26
Naked Singles
valore: 0.6
categoria doc: Getting_Started
Last candidate 4 in H2 changed to solution
Passo 27
Hidden Singles
valore: 1.1
categoria doc: Getting_Started
1 in J2 is last in row/column/box
Passo 28
Bi-value Universal Grave
valore: 30.5
categoria doc: BUG
BUG+1 found in C4, 2 must be the solution
All other incomplete cells contain two candidates apart from C4. Other candidates in C4 would lead to zero, two or more solutions so they can be removed.
Last candidate 2 in C4 changed to solution
Passo 29
Naked Singles
valore: 0.2
categoria doc: Getting_Started
Last candidate 6 in A6 changed to solution
Last candidate 3 in C1 changed to solution
Last candidate 1 in C5 changed to solution
Last candidate 1 in F4 changed to solution
Last candidate 7 in J4 changed to solution
Passo 30
Naked Singles
valore: 0.1
categoria doc: Getting_Started
Last candidate 7 in A5 changed to solution
Last candidate 7 in B2 changed to solution
Last candidate 3 in B4 changed to solution
Last candidate 1 in D1 changed to solution
Last candidate 2 in D5 changed to solution
Last candidate 6 in F1 changed to solution
Last candidate 6 in J5 changed to solution
Last candidate 2 in J6 changed to solution
Passo 31
Naked Singles
valore: 0
categoria doc: Getting_Started
Last candidate 2 in A1 changed to solution
Last candidate 3 in D2 changed to solution
Last candidate 2 in F2 changed to solution
Last candidate 7 in G1 changed to solution
Last candidate 6 in G2 changed to solution