Passi risolutivi (28)
Passo 1
Naked Singles
valore: 0
categoria doc: Getting_Started
Last candidate 9 in C5 changed to solution
Passo 2
Naked Singles
valore: 3
categoria doc: Getting_Started
Last candidate 1 in C3 changed to solution
Passo 3
Naked Singles
valore: 2.9
categoria doc: Getting_Started
Last candidate 8 in C2 changed to solution
Last candidate 7 in C6 changed to solution
Passo 4
Naked Singles
valore: 2.8
categoria doc: Getting_Started
Last candidate 5 in C7 changed to solution
Passo 5
Hidden Singles
valore: 4.9
categoria doc: Getting_Started
1 in F2 is last in column/box
3 in E6 is last in column
3 in J5 is last in row/box
7 in E4 is last in column/box
7 in J1 is last in column/box
8 in B8 is last in row/box
Passo 6
Hidden Singles
valore: 4.2
categoria doc: Getting_Started
2 in G5 is last in column/box
5 in D4 is last in column/box
8 in J4 is last in row/box
Passo 7
Hidden Pair
valore: 38
categoria doc: Hidden_Candidates
Hidden Pair 5/6 in Col 2, on cells {E2|H2}
- removes 2/4/9 from E2
- removes 2/4/9 from H2
Passo 8
Hidden Pair
valore: 37.4
categoria doc: Hidden_Candidates
Hidden Pair 5/6 in Box 7, on cells {G3|H2}
- removes 4/9 from G3
Passo 9
Pointing Pairs
valore: 55.7
categoria doc: Intersection_Removal
Pair: between Box 2 and Row B:
- 1 can be removed from B9
Last candidate 3 in B9 changed to solution
Passo 10
Hidden Singles
valore: 3.5
categoria doc: Getting_Started
3 in A3 is last in row/box
3 in D1 is last in column
Passo 11
Hidden Singles
valore: 3.4
categoria doc: Getting_Started
9 in A2 is last in row/box
Passo 12
Hidden Singles
valore: 3.3
categoria doc: Getting_Started
4 in A5 is last in row
Passo 13
Hidden Singles
valore: 3.1
categoria doc: Getting_Started
4 in F6 is last in box
Passo 14
Pointing Pairs
valore: 43.3
categoria doc: Intersection_Removal
Pair: between Box 8 and Row H:
- 1 can be removed from H8
- 1 can be removed from H9
Passo 15
Rectangle Elimination
valore: 71.5
categoria doc: Rectangle_Elimination
If +5[E8] then -5[E2] forcing +5[H2] which removes all 5s from box 9, so E8 cannot be 5
Passo 16
Pointing Pairs
valore: 42.5
categoria doc: Intersection_Removal
Pair: between Box 6 and Col 9:
- 5 can be removed from H9
Passo 17
Rectangle Elimination
valore: 70.2
categoria doc: Rectangle_Elimination
If +9[E8] then -9[E1] forcing +9[H1] which removes all 9s from box 9, so E8 cannot be 9
Passo 18
Unique Rectangle 2+
valore: 138.9
categoria doc: Unique_Rectangles
Uniqueness Type 2d (Row) at BH46
The 6 on H2 is the last remaining candidate in Row H that stops a Deadly Pattern forming, so other candidates must be removed
- 5 can be removed from H2
Last candidate 6 in H2 changed to solution
Passo 19
Naked Singles
valore: 1.3
categoria doc: Getting_Started
Last candidate 5 in E2 changed to solution
Last candidate 5 in G3 changed to solution
Passo 20
Hidden Singles
valore: 2.4
categoria doc: Getting_Started
5 in F9 is last in row/column/box
5 in H8 is last in row/column/box
Passo 21
Hidden Singles
valore: 2.2
categoria doc: Getting_Started
2 in H1 is last in row
7 in A9 is last in column
7 in F7 is last in row/box
Passo 22
Naked Singles
valore: 0.9
categoria doc: Getting_Started
Last candidate 4 in B1 changed to solution
Last candidate 8 in F1 changed to solution
Last candidate 4 in G7 changed to solution
Last candidate 4 in J2 changed to solution
Passo 23
Naked Singles
valore: 0.7
categoria doc: Getting_Started
Last candidate 2 in B2 changed to solution
Last candidate 9 in E1 changed to solution
Last candidate 6 in F5 changed to solution
Last candidate 6 in G4 changed to solution
Last candidate 9 in H9 changed to solution
Last candidate 9 in J3 changed to solution
Passo 24
Naked Singles
valore: 0.5
categoria doc: Getting_Started
Last candidate 1 in B4 changed to solution
Last candidate 8 in D5 changed to solution
Last candidate 4 in E9 changed to solution
Last candidate 2 in F3 changed to solution
Last candidate 9 in G6 changed to solution
Last candidate 7 in G8 changed to solution
Last candidate 1 in H6 changed to solution
Passo 25
Naked Singles
valore: 0.3
categoria doc: Getting_Started
Last candidate 6 in B6 changed to solution
Last candidate 1 in D9 changed to solution
Last candidate 6 in E3 changed to solution
Last candidate 4 in H4 changed to solution
Passo 26
Naked Singles
valore: 0.2
categoria doc: Getting_Started
Last candidate 4 in D3 changed to solution
Last candidate 6 in D7 changed to solution
Last candidate 2 in E8 changed to solution
Passo 27
Naked Singles
valore: 0.1
categoria doc: Getting_Started
Last candidate 1 in A7 changed to solution
Last candidate 9 in D8 changed to solution
Last candidate 8 in E7 changed to solution
Last candidate 1 in J8 changed to solution
Passo 28
Naked Singles
valore: 0
categoria doc: Getting_Started
Last candidate 6 in A8 changed to solution
Last candidate 2 in J7 changed to solution