Passi risolutivi (26)
Passo 1
Naked Singles
valore: 0
categoria doc: Getting_Started
Last candidate 8 in J3 changed to solution
Passo 2
Naked Singles
valore: 2.9
categoria doc: Getting_Started
Last candidate 4 in D3 changed to solution
Passo 3
Naked Singles
valore: 2.8
categoria doc: Getting_Started
Last candidate 2 in D7 changed to solution
Last candidate 5 in F3 changed to solution
Passo 4
Naked Singles
valore: 2.5
categoria doc: Getting_Started
Last candidate 9 in B3 changed to solution
Last candidate 4 in F7 changed to solution
Passo 5
Hidden Singles
valore: 4.5
categoria doc: Getting_Started
4 in E5 is last in row/column/box
5 in E8 is last in row/box
7 in H1 is last in column/box
8 in G6 is last in row/box
Passo 6
Hidden Singles
valore: 4
categoria doc: Getting_Started
8 in D8 is last in column/box
8 in E2 is last in row
9 in F6 is last in column
Passo 7
Hidden Singles
valore: 3.4
categoria doc: Getting_Started
2 in F2 is last in column/box
8 in A1 is last in column/box
8 in B5 is last in row
9 in A8 is last in column
9 in D9 is last in row/box
Passo 8
Hidden Singles
valore: 2.9
categoria doc: Getting_Started
4 in A9 is last in row
7 in C4 is last in box
7 in J5 is last in column
Passo 9
Hidden Singles
valore: 2.6
categoria doc: Getting_Started
6 in C6 is last in row/box
Passo 10
Naked Singles
valore: 1.3
categoria doc: Getting_Started
Last candidate 2 in E6 changed to solution
Passo 11
Naked Singles
valore: 1.2
categoria doc: Getting_Started
Last candidate 6 in E4 changed to solution
Passo 12
Naked Pair
valore: 11.8
categoria doc: Naked_Candidates
Naked Pair 6/7 on cells {F8|F9} means
- 6 can be removed from F1
Passo 13
Hidden Singles
valore: 2.3
categoria doc: Getting_Started
6 in D1 is last in column
Passo 14
Hidden Pair
valore: 21.5
categoria doc: Hidden_Candidates
Hidden Pair 5/9 in Box 8, on cells {G4|H4}
- removes 1/3 from G4
- removes 1/2 from H4
Passo 15
Naked Pair
valore: 10.6
categoria doc: Naked_Candidates
Naked Pair 5/9 on cells {G4|H4} means
- 5 can be removed from A4
Passo 16
Hidden Pair
valore: 20.6
categoria doc: Hidden_Candidates
Hidden Pair 2/6 in Box 9, on cells {H8|J9}
- removes 1 from H8
- removes 3 from J9
Passo 17
Line/Box Reduction
valore: 40.7
categoria doc: Intersection_Removal
Triple: between Row A and Box 2:
- 3 can be removed from B6
Passo 18
Y-Wing
valore: 80.3
categoria doc: Y_Wing_Strategy
Y-Wing pattern. Hinge: G1 (1/4), wings C1 G8, therefore
- 3 can be removed from C8
Last candidate 2 in C8 changed to solution
Passo 19
Naked Singles
valore: 1
categoria doc: Getting_Started
Last candidate 6 in H8 changed to solution
Passo 20
Naked Singles
valore: 0.9
categoria doc: Getting_Started
Last candidate 7 in F8 changed to solution
Last candidate 2 in J9 changed to solution
Passo 21
Naked Singles
valore: 0.8
categoria doc: Getting_Started
Last candidate 6 in F9 changed to solution
Passo 22
Hidden Singles
valore: 1.5
categoria doc: Getting_Started
2 in A4 is last in column
2 in H5 is last in row/box
6 in J2 is last in row/column/box
7 in B9 is last in row/column/box
Passo 23
W-Wing
valore: 33
categoria doc: W_Wings
W-Wing (single). Either there is a 1 in D2 or in G8. They are connected through 3 in B2/B8, therefore
- 1 can be removed from G2
Passo 24
Simple Colouring
valore: 55
categoria doc: Singles_Chains
(RULE 2): Two 1s in a single unit (in Row A) have the same color in cells A5 A7 - all yellow coloured candidates can be removed
Last candidate 3 in A5 changed to solution
Last candidate 5 in A7 changed to solution
Last candidate 5 in B6 changed to solution
Last candidate 3 in D4 changed to solution
Last candidate 3 in F1 changed to solution
Last candidate 3 in G8 changed to solution
Last candidate 9 in H2 changed to solution
Last candidate 3 in J6 changed to solution
Passo 25
Naked Singles
valore: 0.3
categoria doc: Getting_Started
Last candidate 1 in A6 changed to solution
Last candidate 3 in B2 changed to solution
Last candidate 1 in B8 changed to solution
Last candidate 4 in C1 changed to solution
Last candidate 3 in C9 changed to solution
Last candidate 1 in D2 changed to solution
Last candidate 1 in F5 changed to solution
Last candidate 4 in G2 changed to solution
Last candidate 5 in G9 changed to solution
Last candidate 5 in H4 changed to solution
Last candidate 1 in H7 changed to solution
Last candidate 1 in J4 changed to solution
Passo 26
Naked Singles
valore: 0
categoria doc: Getting_Started
Last candidate 5 in C2 changed to solution
Last candidate 1 in G1 changed to solution
Last candidate 9 in G4 changed to solution