Passi risolutivi (31)
Passo 1
Hidden Singles
valore: 6.2
categoria doc: Getting_Started
5 in C3 is last in row/box
5 in F2 is last in column
6 in E9 is last in row/box
8 in G1 is last in column/box
8 in H5 is last in row
Passo 2
Hidden Singles
valore: 5.6
categoria doc: Getting_Started
5 in D5 is last in row/box
6 in B3 is last in column/box
Passo 3
Hidden Singles
valore: 5.4
categoria doc: Getting_Started
2 in A3 is last in column/box
Passo 4
Hidden Singles
valore: 5
categoria doc: Getting_Started
2 in C6 is last in column
7 in D3 is last in column
Passo 5
Naked Singles
valore: 2.3
categoria doc: Getting_Started
Last candidate 9 in E1 changed to solution
Passo 6
Naked Singles
valore: 2.2
categoria doc: Getting_Started
Last candidate 1 in E2 changed to solution
Passo 7
Naked Singles
valore: 2.2
categoria doc: Getting_Started
Last candidate 2 in E8 changed to solution
Passo 8
Naked Singles
valore: 2.1
categoria doc: Getting_Started
Last candidate 7 in E5 changed to solution
Passo 9
Hidden Singles
valore: 3.9
categoria doc: Getting_Started
2 in B7 is last in row/box
2 in F5 is last in row/column/box
2 in G9 is last in column
6 in C5 is last in row/box
Passo 10
Hidden Singles
valore: 3.6
categoria doc: Getting_Started
1 in C4 is last in row/box
1 in G5 is last in column
Passo 11
Naked Singles
valore: 1.6
categoria doc: Getting_Started
Last candidate 9 in F4 changed to solution
Passo 12
Naked Singles
valore: 1.5
categoria doc: Getting_Started
Last candidate 1 in D6 changed to solution
Last candidate 5 in G4 changed to solution
Passo 13
Naked Singles
valore: 1.4
categoria doc: Getting_Started
Last candidate 7 in J4 changed to solution
Passo 14
Hidden Singles
valore: 2.6
categoria doc: Getting_Started
1 in F7 is last in row/box
5 in J8 is last in row/column/box
7 in A6 is last in column/box
7 in B1 is last in row
Passo 15
Hidden Singles
valore: 2.2
categoria doc: Getting_Started
1 in H8 is last in column/box
1 in J3 is last in row
Passo 16
Pointing Pairs
valore: 31.8
categoria doc: Intersection_Removal
Pair: between Box 1 and Col 2:
- 9 can be removed from H2
Passo 17
Rectangle Elimination
valore: 52.3
categoria doc: Rectangle_Elimination
If +3[C9] then -3[C1] forcing +3[D1] which removes all 3s from Box 6, so C9 cannot be 3
Passo 18
Rectangle Elimination
valore: 51.6
categoria doc: Rectangle_Elimination
If +3[H9] then -3[F9] forcing +3[F3] which removes all 3s from Box 7, so H9 cannot be 3
Passo 19
Line/Unit Reduction
valore: 40.2
categoria doc: Intersection_Removal
Line/Box Reduction: 3s in box 6 remove the following in the same box:
- 3 can be removed from D7
- 3 can be removed from D8
Passo 20
Rectangle Elimination
valore: 49.5
categoria doc: Rectangle_Elimination
If +4[C9] then -4[C1] forcing +4[D1] which removes all 4s from Box 6, so C9 cannot be 4
Last candidate 7 in C9 changed to solution
Passo 21
Hidden Singles
valore: 1.8
categoria doc: Getting_Started
7 in H7 is last in row/column/box
Passo 22
Hidden Singles
valore: 1.6
categoria doc: Getting_Started
6 in G7 is last in column/box
6 in H6 is last in row
Passo 23
Hidden Singles
valore: 1.5
categoria doc: Getting_Started
3 in G8 is last in box
Passo 24
Rectangle Elimination
valore: 35.1
categoria doc: Rectangle_Elimination
If +4[H9] then -4[F9] forcing +4[F3] which removes all 4s from Box 7, so H9 cannot be 4
Last candidate 9 in H9 changed to solution
Passo 25
Naked Singles
valore: 0.6
categoria doc: Getting_Started
Last candidate 4 in J7 changed to solution
Passo 26
Naked Singles
valore: 0.5
categoria doc: Getting_Started
Last candidate 3 in C7 changed to solution
Last candidate 9 in J6 changed to solution
Passo 27
Naked Singles
valore: 0.4
categoria doc: Getting_Started
Last candidate 8 in A7 changed to solution
Last candidate 4 in C1 changed to solution
Last candidate 4 in G6 changed to solution
Passo 28
Naked Singles
valore: 0.2
categoria doc: Getting_Started
Last candidate 3 in A4 changed to solution
Last candidate 4 in B8 changed to solution
Last candidate 3 in D1 changed to solution
Last candidate 9 in D7 changed to solution
Last candidate 9 in G3 changed to solution
Passo 29
Naked Singles
valore: 0.1
categoria doc: Getting_Started
Last candidate 9 in A2 changed to solution
Last candidate 8 in B4 changed to solution
Last candidate 9 in B5 changed to solution
Last candidate 8 in D8 changed to solution
Last candidate 4 in D9 changed to solution
Last candidate 4 in F3 changed to solution
Passo 30
Naked Singles
valore: 0
categoria doc: Getting_Started
Last candidate 4 in A5 changed to solution
Last candidate 3 in B2 changed to solution
Last candidate 3 in F9 changed to solution
Last candidate 3 in H3 changed to solution
Passo 31
Naked Singles
valore: 0
categoria doc: Getting_Started
Last candidate 4 in H2 changed to solution