Passi risolutivi (28)
Passo 1
Hidden Singles
valore: 6.1
categoria doc: Getting_Started
5 in C8 is last in row
9 in C5 is last in row
9 in G2 is last in row
Passo 2
Hidden Singles
valore: 5.5
categoria doc: Getting_Started
9 in A1 is last in row/column/box
9 in D6 is last in column/box
Passo 3
Hidden Singles
valore: 5.1
categoria doc: Getting_Started
5 in A2 is last in row/box
5 in F4 is last in box
5 in H6 is last in column
Passo 4
Hidden Singles
valore: 4.4
categoria doc: Getting_Started
1 in A6 is last in column
1 in J5 is last in box
5 in D1 is last in row/column/box
5 in J9 is last in row/column/box
8 in E4 is last in column/box
Passo 5
Hidden Singles
valore: 3.7
categoria doc: Getting_Started
7 in E1 is last in column/box
7 in G5 is last in column/box
9 in F9 is last in column
9 in J8 is last in row/box
Passo 6
Hidden Singles
valore: 3.3
categoria doc: Getting_Started
7 in B8 is last in column
7 in J7 is last in row/box
8 in F3 is last in row
Passo 7
Hidden Singles
valore: 2.8
categoria doc: Getting_Started
1 in E2 is last in box
1 in F8 is last in row
7 in D9 is last in row/column/box
8 in J2 is last in row/column/box
Passo 8
Naked Singles
valore: 1.2
categoria doc: Getting_Started
Last candidate 4 in E9 changed to solution
Passo 9
Naked Singles
valore: 1.2
categoria doc: Getting_Started
Last candidate 6 in E8 changed to solution
Passo 10
Naked Singles
valore: 1.1
categoria doc: Getting_Started
Last candidate 8 in D7 changed to solution
Passo 11
Hidden Singles
valore: 2.1
categoria doc: Getting_Started
3 in F1 is last in box
4 in D5 is last in row/column/box
8 in A9 is last in row/column/box
Passo 12
Naked Singles
valore: 0.9
categoria doc: Getting_Started
Last candidate 6 in F5 changed to solution
Passo 13
Pointing Pairs
valore: 27.6
categoria doc: Intersection_Removal
Pair: between Box 9 and Row H:
- 2 can be removed from H1
- 2 can be removed from H2
Passo 14
Pointing Pairs
valore: 27.2
categoria doc: Intersection_Removal
Pair: between Box 7 and Row J:
- 2 can be removed from J4
Passo 15
Pointing Pairs
valore: 26.8
categoria doc: Intersection_Removal
Pair: between Box 3 and Row A:
- 4 can be removed from A3
Passo 16
Y-Wing
valore: 70.4
categoria doc: Y_Wing_Strategy
Y-Wing pattern. Hinge: C7 (1/6), wings B9 C4, therefore
- 2 can be removed from B4
Passo 17
Rectangle Elimination
valore: 43.3
categoria doc: Rectangle_Elimination
If +3[A3] then -3[J3] forcing +3[J4] which removes all 3s from Box 2, so A3 cannot be 3
Passo 18
Hidden Singles
valore: 1.7
categoria doc: Getting_Started
3 in A5 is last in row
Passo 19
Naked Singles
valore: 0.7
categoria doc: Getting_Started
Last candidate 6 in B4 changed to solution
Last candidate 2 in E5 changed to solution
Passo 20
Naked Singles
valore: 0.6
categoria doc: Getting_Started
Last candidate 2 in C4 changed to solution
Last candidate 3 in E6 changed to solution
Passo 21
Naked Singles
valore: 0.6
categoria doc: Getting_Started
Last candidate 2 in G6 changed to solution
Passo 22
Hidden Singles
valore: 1.2
categoria doc: Getting_Started
6 in H1 is last in column
Passo 23
Naked Singles
valore: 0.5
categoria doc: Getting_Started
Last candidate 3 in H2 changed to solution
Passo 24
Naked Singles
valore: 0.5
categoria doc: Getting_Started
Last candidate 2 in B2 changed to solution
Passo 25
Naked Singles
valore: 0.3
categoria doc: Getting_Started
Last candidate 6 in A3 changed to solution
Last candidate 4 in B1 changed to solution
Last candidate 1 in B9 changed to solution
Last candidate 6 in D2 changed to solution
Passo 26
Naked Singles
valore: 0.1
categoria doc: Getting_Started
Last candidate 4 in A7 changed to solution
Last candidate 3 in B3 changed to solution
Last candidate 1 in C3 changed to solution
Last candidate 6 in C7 changed to solution
Last candidate 2 in D3 changed to solution
Last candidate 2 in H9 changed to solution
Last candidate 2 in J1 changed to solution
Passo 27
Naked Singles
valore: 0
categoria doc: Getting_Started
Last candidate 2 in A8 changed to solution
Last candidate 3 in G7 changed to solution
Last candidate 1 in H7 changed to solution
Last candidate 4 in H8 changed to solution
Last candidate 4 in J3 changed to solution
Passo 28
Naked Singles
valore: 0
categoria doc: Getting_Started
Last candidate 4 in G4 changed to solution
Last candidate 3 in J4 changed to solution