Passi risolutivi (27)
Passo 1
Naked Singles
valore: 1
categoria doc: Getting_Started
Last candidate 8 in C3 changed to solution
Passo 2
Naked Singles
valore: 2
categoria doc: Getting_Started
Last candidate 1 in C6 changed to solution
Last candidate 7 in C9 changed to solution
Passo 3
Naked Singles
valore: 2.6
categoria doc: Getting_Started
Last candidate 3 in C4 changed to solution
Last candidate 9 in C8 changed to solution
Passo 4
Naked Singles
valore: 2.6
categoria doc: Getting_Started
Last candidate 2 in C1 changed to solution
Passo 5
Hidden Singles
valore: 4.7
categoria doc: Getting_Started
2 in B5 is last in row/column/box
3 in A2 is last in row/column/box
9 in D7 is last in column/box
9 in E2 is last in row
9 in G5 is last in row/column/box
Passo 6
Hidden Singles
valore: 4.2
categoria doc: Getting_Started
3 in D5 is last in row
3 in F7 is last in column/box
5 in E8 is last in row
9 in A1 is last in row/column/box
Passo 7
Hidden Singles
valore: 3.8
categoria doc: Getting_Started
1 in A8 is last in row
1 in B2 is last in box
5 in A9 is last in box
Passo 8
Naked Singles
valore: 1.6
categoria doc: Getting_Started
Last candidate 6 in A3 changed to solution
Last candidate 8 in B8 changed to solution
Passo 9
Naked Singles
valore: 1.5
categoria doc: Getting_Started
Last candidate 5 in B3 changed to solution
Last candidate 6 in B4 changed to solution
Passo 10
Naked Singles
valore: 1.4
categoria doc: Getting_Started
Last candidate 4 in E4 changed to solution
Passo 11
Naked Pair
valore: 13.8
categoria doc: Naked_Candidates
Naked Pair 4/7 on cells {D3|F3} means
- 4 can be removed from D1
- 7 can be removed from D2
- 4 can be removed from F1
- 7 can be removed from F2
Passo 12
Naked Pair
valore: 13.5
categoria doc: Naked_Candidates
Naked Pair 6/7 on cells {E5|E6} means
- 6/7 can be removed from F5
Passo 13
Naked Pair
valore: 13.3
categoria doc: Naked_Candidates
Naked Pair 1/8 on cells {F1|F5} means
- 8 can be removed from F2
Last candidate 6 in F2 changed to solution
Passo 14
Pointing Pairs
valore: 37.6
categoria doc: Intersection_Removal
Pair: between Box 6 and Col 8:
- 7 can be removed from H8
- 7 can be removed from J8
Last candidate 4 in H8 changed to solution
Passo 15
Hidden Pair
valore: 21.5
categoria doc: Hidden_Candidates
Hidden Pair 4/6 in Box 8, on cells {G6|J5}
- removes 7/8 from G6
- removes 1/7/8 from J5
Passo 16
Pointing Pairs
valore: 31.4
categoria doc: Intersection_Removal
Pair: between Box 8 and Row H:
- 7 can be removed from H2
- 7 can be removed from H7
Passo 17
Naked Pair
valore: 9.9
categoria doc: Naked_Candidates
Naked Pair 5/8 on cells {D2|H2} means
- 5/8 can be removed from G2
- 5/8 can be removed from J2
Passo 18
Rectangle Elimination
valore: 48.8
categoria doc: Rectangle_Elimination
If +8[D4] then -8[D2] forcing +8[H2] which removes all 8s from Box 8, so D4 cannot be 8
Last candidate 1 in D4 changed to solution
Passo 19
Naked Singles
valore: 0.9
categoria doc: Getting_Started
Last candidate 8 in F5 changed to solution
Passo 20
Naked Singles
valore: 0.8
categoria doc: Getting_Started
Last candidate 4 in A5 changed to solution
Last candidate 1 in F1 changed to solution
Passo 21
Naked Singles
valore: 0.7
categoria doc: Getting_Started
Last candidate 8 in A6 changed to solution
Last candidate 6 in J5 changed to solution
Passo 22
Naked Singles
valore: 0.6
categoria doc: Getting_Started
Last candidate 7 in E5 changed to solution
Last candidate 4 in G6 changed to solution
Last candidate 7 in H6 changed to solution
Last candidate 2 in J8 changed to solution
Passo 23
Naked Singles
valore: 0.4
categoria doc: Getting_Started
Last candidate 6 in E6 changed to solution
Last candidate 7 in F8 changed to solution
Last candidate 1 in H5 changed to solution
Last candidate 7 in J2 changed to solution
Last candidate 8 in J9 changed to solution
Passo 24
Naked Singles
valore: 0.2
categoria doc: Getting_Started
Last candidate 6 in D8 changed to solution
Last candidate 4 in F3 changed to solution
Last candidate 2 in G2 changed to solution
Last candidate 6 in G9 changed to solution
Last candidate 5 in H7 changed to solution
Last candidate 5 in J4 changed to solution
Passo 25
Naked Singles
valore: 0.1
categoria doc: Getting_Started
Last candidate 7 in D3 changed to solution
Last candidate 4 in D9 changed to solution
Last candidate 2 in F9 changed to solution
Last candidate 8 in G4 changed to solution
Last candidate 7 in G7 changed to solution
Last candidate 8 in H2 changed to solution
Last candidate 4 in J1 changed to solution
Last candidate 1 in J7 changed to solution
Passo 26
Naked Singles
valore: 0
categoria doc: Getting_Started
Last candidate 5 in D2 changed to solution
Last candidate 5 in G1 changed to solution
Passo 27
Naked Singles
valore: 0
categoria doc: Getting_Started
Last candidate 8 in D1 changed to solution