Passi risolutivi (37)
Passo 1
Naked Singles
valore: 1
categoria doc: Getting_Started
Last candidate 5 in A5 changed to solution
Passo 2
Hidden Singles
valore: 5.4
categoria doc: Getting_Started
2 in D3 is last in box
5 in G6 is last in column/box
6 in F6 is last in row/box
Passo 3
Hidden Singles
valore: 5
categoria doc: Getting_Started
7 in J6 is last in column/box
9 in D4 is last in box
Passo 4
Hidden Singles
valore: 4.7
categoria doc: Getting_Started
3 in E4 is last in column/box
Passo 5
Naked Pair
valore: 23
categoria doc: Naked_Candidates
Naked Pair 1/2 on cells {C6|E6} means
- 1 can be removed from B6
Passo 6
Naked Pair
valore: 22.8
categoria doc: Naked_Candidates
Naked Pair 8/9 on cells {A6|B6} means
- 8 can be removed from A4
Last candidate 4 in A4 changed to solution
Passo 7
Naked Pair
valore: 21.6
categoria doc: Naked_Candidates
Naked Pair 7/8 on cells {A8|H8} means
- 8 can be removed from B8
- 8 can be removed from D8
- 8 can be removed from J8
Passo 8
Naked Pair
valore: 21.5
categoria doc: Naked_Candidates
Naked Pair 1/2 on cells {C4|C6} means
- 1 can be removed from C1
Passo 9
Naked Pair
valore: 21.2
categoria doc: Naked_Candidates
Naked Pair 1/2 on cells {E5|E6} means
- 1 can be removed from E1
- 1 can be removed from E7
Passo 10
Hidden Pair
valore: 41.5
categoria doc: Hidden_Candidates
Hidden Pair 5/8 in Box 4, on cells {D1|E1}
- removes 1/3 from D1
- removes 4 from E1
Passo 11
Naked Pair
valore: 20.1
categoria doc: Naked_Candidates
Naked Pair 5/8 on cells {D1|E1} means
- 5 can be removed from B1
- 5 can be removed from C1
- 8 can be removed from G1
- 5/8 can be removed from H1
Passo 12
Hidden Singles
valore: 4
categoria doc: Getting_Started
5 in H2 is last in row/box
Passo 13
Hidden Pair
valore: 38
categoria doc: Hidden_Candidates
Hidden Pair 7/9 in Box 6, on cells {F7|F9}
- removes 1/3/4 from F7
- removes 3/4 from F9
Passo 14
Unique Rectangle 2+
valore: 187.1
categoria doc: Unique_Rectangles
Uniqueness Type 4 (Row) removing 7 from roof because of F7,F9,H7,H9
Passo 15
Hidden Unique Rectangle
valore: 371.4
categoria doc: Hidden_Unique_Rectangles
Type 2: removing 8 at D7 because of DE17 and one strong link on 5 between E1 and E7
Passo 16
WXYZ Wing
valore: 368.6
categoria doc: WXYZ_Wing
WXYZ Wing Type 1: The four cells {C9,A8,D9,E9} contain in total 3/4/7/8 with the hinge on C9.
Non-Restricted candidate 8 determines the 'wing' cells (in yellow) and one of those 8s must be true. Therefore...
- 8 can be removed from B9
Passo 17
Hidden Singles
valore: 3.7
categoria doc: Getting_Started
8 in B6 is last in row
Passo 18
Naked Singles
valore: 1.8
categoria doc: Getting_Started
Last candidate 9 in A6 changed to solution
Passo 19
Naked Singles
valore: 1.7
categoria doc: Getting_Started
Last candidate 3 in A2 changed to solution
Passo 20
Hidden Singles
valore: 3.2
categoria doc: Getting_Started
3 in F1 is last in column
3 in J3 is last in row/box
9 in B2 is last in row/column/box
Passo 21
Naked Singles
valore: 1.5
categoria doc: Getting_Started
Last candidate 4 in F3 changed to solution
Passo 22
Naked Singles
valore: 1.4
categoria doc: Getting_Started
Last candidate 1 in F2 changed to solution
Passo 23
Hidden Singles
valore: 2.8
categoria doc: Getting_Started
1 in B1 is last in row/column/box
8 in G3 is last in column/box
Passo 24
Hidden Singles
valore: 2.6
categoria doc: Getting_Started
4 in C1 is last in box
Passo 25
Hidden Pair
valore: 23.9
categoria doc: Hidden_Candidates
Hidden Pair 6/8 in Row J, on cells {J4|J7}
- removes 1/2 from J4
- removes 1/4 from J7
Passo 26
Y-Wing
valore: 93.5
categoria doc: Y_Wing_Strategy
Y-Wing pattern. Hinge: H8 (7/8), wings H1 J7, therefore
- 6 can be removed from H7
- 6 can be removed from H9
Passo 27
Y-Wing
valore: 92.4
categoria doc: Y_Wing_Strategy
Y-Wing pattern. Hinge: H7 (8/9), wings F7 H8, therefore
- 7 can be removed from G7
Passo 28
Naked Quad
valore: 89.1
categoria doc: Naked_Candidates
Naked Quad 6/7/8/9 on cells {A7|F7|H7|J7} means
- 7 can be removed from C7
- 8 can be removed from E7
- 6 can be removed from G7
Passo 29
Naked Pair
valore: 11
categoria doc: Naked_Candidates
Naked Pair 1/4 on cells {G7|J8} means
- 4 can be removed from G9
Passo 30
Pointing Pairs
valore: 32.6
categoria doc: Intersection_Removal
Pair: between Box 6 and Col 9:
- 8 can be removed from H9
Passo 31
Chute Remote Pair
valore: 53
categoria doc: Chute_Remote_Pairs
4 cannot be set in the yellow cells {G9,H9,J9} and with the Remote Pair in B8 and E7 it means:
- 5 can be removed from C7
- 5 can be removed from D8
Last candidate 3 in C7 changed to solution
Last candidate 1 in D8 changed to solution
Passo 32
Naked Singles
valore: 0.8
categoria doc: Getting_Started
Last candidate 7 in C9 changed to solution
Last candidate 5 in D7 changed to solution
Last candidate 4 in J8 changed to solution
Passo 33
Naked Singles
valore: 0.5
categoria doc: Getting_Started
Last candidate 8 in A8 changed to solution
Last candidate 5 in B8 changed to solution
Last candidate 5 in C3 changed to solution
Last candidate 8 in D1 changed to solution
Last candidate 4 in E7 changed to solution
Last candidate 9 in F9 changed to solution
Last candidate 1 in G7 changed to solution
Last candidate 2 in J2 changed to solution
Passo 34
Naked Singles
valore: 0.3
categoria doc: Getting_Started
Last candidate 6 in A7 changed to solution
Last candidate 6 in B3 changed to solution
Last candidate 3 in D9 changed to solution
Last candidate 5 in E1 changed to solution
Last candidate 8 in E9 changed to solution
Last candidate 7 in F7 changed to solution
Last candidate 4 in G2 changed to solution
Last candidate 7 in H8 changed to solution
Last candidate 2 in H9 changed to solution
Last candidate 1 in J5 changed to solution
Passo 35
Naked Singles
valore: 0.1
categoria doc: Getting_Started
Last candidate 7 in A3 changed to solution
Last candidate 4 in B9 changed to solution
Last candidate 2 in E5 changed to solution
Last candidate 6 in G9 changed to solution
Last candidate 6 in H1 changed to solution
Last candidate 8 in J7 changed to solution
Passo 36
Naked Singles
valore: 0
categoria doc: Getting_Started
Last candidate 1 in E6 changed to solution
Last candidate 7 in G1 changed to solution
Last candidate 2 in G4 changed to solution
Last candidate 8 in H4 changed to solution
Last candidate 9 in H7 changed to solution
Last candidate 6 in J4 changed to solution
Passo 37
Naked Singles
valore: 0
categoria doc: Getting_Started
Last candidate 1 in C4 changed to solution
Last candidate 2 in C6 changed to solution