Passi risolutivi (23)
Passo 1
Hidden Singles
valore: 5.1
categoria doc: Getting_Started
1 in J3 is last in column/box
4 in C5 is last in row/column/box
4 in J7 is last in row/box
5 in C4 is last in row/box
6 in B2 is last in row/box
7 in E9 is last in column/box
9 in A7 is last in row/box
Passo 2
Hidden Singles
valore: 4.3
categoria doc: Getting_Started
7 in A6 is last in box
7 in J4 is last in column
9 in D9 is last in column/box
Passo 3
Naked Singles
valore: 2
categoria doc: Getting_Started
Last candidate 2 in J2 changed to solution
Passo 4
Naked Singles
valore: 1.9
categoria doc: Getting_Started
Last candidate 6 in J9 changed to solution
Passo 5
Naked Singles
valore: 1.8
categoria doc: Getting_Started
Last candidate 9 in J5 changed to solution
Passo 6
Hidden Singles
valore: 3.5
categoria doc: Getting_Started
9 in E2 is last in row
9 in F4 is last in column/box
Passo 7
Hidden Singles
valore: 3.4
categoria doc: Getting_Started
1 in B4 is last in column
8 in D2 is last in column
Passo 8
Naked Singles
valore: 1.6
categoria doc: Getting_Started
Last candidate 2 in D4 changed to solution
Passo 9
Naked Singles
valore: 1.4
categoria doc: Getting_Started
Last candidate 6 in D6 changed to solution
Last candidate 8 in H4 changed to solution
Passo 10
Naked Singles
valore: 1.3
categoria doc: Getting_Started
Last candidate 1 in F6 changed to solution
Passo 11
Naked Singles
valore: 1.2
categoria doc: Getting_Started
Last candidate 8 in E5 changed to solution
Passo 12
Hidden Singles
valore: 2.1
categoria doc: Getting_Started
1 in A8 is last in row/box
1 in E7 is last in column
1 in G5 is last in row/column/box
6 in H5 is last in row/column/box
8 in B6 is last in column/box
8 in G7 is last in row/box
Passo 13
Hidden Singles
valore: 1.7
categoria doc: Getting_Started
5 in D7 is last in column/box
8 in A3 is last in row
8 in C8 is last in column/box
Passo 14
X-Wing
valore: 45.4
categoria doc: X_Wing_Strategy
(Col->Row) 3 taken off C3, based on DH38
(Col->Row) 3 taken off F3, based on DH38
(Col->Row) 3 taken off F8, based on DH38
Passo 15
Pointing Pairs
valore: 21.9
categoria doc: Intersection_Removal
Pair: between Box 1 and Col 1:
- 3 can be removed from F1
- 3 can be removed from G1
Passo 16
Y-Wing
valore: 57.2
categoria doc: Y_Wing_Strategy
Y-Wing pattern. Hinge: H3 (3/5), wings E3 H8, therefore
- 2 can be removed from E8
Last candidate 6 in E8 changed to solution
Passo 17
Hidden Singles
valore: 1.3
categoria doc: Getting_Started
6 in F1 is last in row/column/box
Passo 18
Naked Pair
valore: 6.2
categoria doc: Naked_Candidates
Naked Pair 2/5 on cells {E1|E3} means
- 2 can be removed from F3
Passo 19
Bi-value Universal Grave
valore: 35.5
categoria doc: BUG
BUG+1 found in C1, 2 must be the solution
All other incomplete cells contain two candidates apart from C1. Other candidates in C1 would create two or more solutions so they can be removed.
Last candidate 2 in C1 changed to solution
Passo 20
Naked Singles
valore: 0.5
categoria doc: Getting_Started
Last candidate 3 in A1 changed to solution
Last candidate 7 in C3 changed to solution
Last candidate 3 in C9 changed to solution
Last candidate 5 in E1 changed to solution
Passo 21
Naked Singles
valore: 0.4
categoria doc: Getting_Started
Last candidate 2 in A5 changed to solution
Last candidate 2 in B7 changed to solution
Last candidate 2 in E3 changed to solution
Last candidate 4 in F3 changed to solution
Last candidate 7 in G1 changed to solution
Last candidate 2 in G9 changed to solution
Passo 22
Naked Singles
valore: 0.2
categoria doc: Getting_Started
Last candidate 3 in B5 changed to solution
Last candidate 3 in D3 changed to solution
Last candidate 3 in F7 changed to solution
Last candidate 2 in F8 changed to solution
Last candidate 3 in G2 changed to solution
Last candidate 5 in G6 changed to solution
Last candidate 3 in H8 changed to solution
Passo 23
Naked Singles
valore: 0.1
categoria doc: Getting_Started
Last candidate 4 in D8 changed to solution
Last candidate 7 in F2 changed to solution
Last candidate 5 in H3 changed to solution
Last candidate 2 in H6 changed to solution