Passi risolutivi (35)
Passo 1
Naked Singles
valore: 0
categoria doc: Getting_Started
Last candidate 8 in H6 changed to solution
Passo 2
Hidden Singles
valore: 5.3
categoria doc: Getting_Started
1 in E9 is last in box
3 in H2 is last in row
3 in J9 is last in column/box
4 in G9 is last in row/column/box
Passo 3
Hidden Singles
valore: 4.6
categoria doc: Getting_Started
3 in D6 is last in row
7 in J8 is last in box
8 in E5 is last in row
Passo 4
Hidden Singles
valore: 4.3
categoria doc: Getting_Started
4 in F6 is last in column
Passo 5
Hidden Singles
valore: 4
categoria doc: Getting_Started
1 in B6 is last in column
1 in F4 is last in row/box
4 in D2 is last in row/box
Passo 6
Hidden Pair
valore: 36.9
categoria doc: Hidden_Candidates
Hidden Pair 4/5 in Box 1, on cells {A1|C1}
- removes 3/9 from A1
- removes 6 from C1
Passo 7
Hidden Singles
valore: 3.6
categoria doc: Getting_Started
3 in A3 is last in row/box
3 in F1 is last in column
Passo 8
Hidden Pair
valore: 34.1
categoria doc: Hidden_Candidates
Hidden Pair 2/5 in Row B, on cells {B4|B8}
- removes 7 from B4
- removes 6/9 from B8
Passo 9
Pointing Pairs
valore: 50.3
categoria doc: Intersection_Removal
Pair: between Box 1 and Col 3:
- 6 can be removed from G3
- 6 can be removed from J3
Passo 10
Pointing Pairs
valore: 49.9
categoria doc: Intersection_Removal
Pair: between Box 4 and Row F:
- 8 can be removed from F8
Passo 11
Hidden Singles
valore: 3.2
categoria doc: Getting_Started
8 in D8 is last in column
Passo 12
Hidden Singles
valore: 3.1
categoria doc: Getting_Started
8 in C9 is last in column
Passo 13
Hidden Pair
valore: 30.3
categoria doc: Hidden_Candidates
Hidden Pair 1/6 in Row C, on cells {C3|C7}
- removes 5 from C7
Passo 14
Line/Box Reduction
valore: 60
categoria doc: Intersection_Removal
Pair: between Row C and Box 2:
- 7 can be removed from A5
Passo 15
W-Wing
valore: 74.3
categoria doc: W_Wings
W-Wing (single). Either there is a 9 in D9 or in H4. They are connected through 6 in F8/H8, therefore
- 9 can be removed from D4
Passo 16
Rectangle Elimination
valore: 73.6
categoria doc: Rectangle_Elimination
If +2[D4] then -2[B4] forcing +2[B8] which removes all 2s from box 6, so D4 cannot be 2
Passo 17
Rectangle Elimination
valore: 72.9
categoria doc: Rectangle_Elimination
If +2[G3] then -2[G6] forcing +2[E6] which removes all 2s from box 4, so G3 cannot be 2
Passo 18
Chute Remote Pair
valore: 71.5
categoria doc: Chute_Remote_Pair
9 cannot be set in the yellow cells {A1,B1,C1} and with the Remote Pair in F2 and G3 it means:
- 8 can be removed from F3
- 8 can be removed from J2
Passo 19
Hidden Singles
valore: 2.8
categoria doc: Getting_Started
8 in F2 is last in row/column/box
Passo 20
Rectangle Elimination
valore: 69.5
categoria doc: Rectangle_Elimination
If +6[D7] then -6[D4] forcing +6[H4] which removes all 6s from box 9, so D7 cannot be 6
Passo 21
Rectangle Elimination
valore: 68.1
categoria doc: Rectangle_Elimination
If either +6[F5] or +6[H8] are ON then both are on because they are strongly linked through the hinge cell F8. If both are ON then this removes all 6s from box 8, so neither can be 6
Passo 22
Hidden Singles
valore: 2.7
categoria doc: Getting_Started
6 in F8 is last in row/column
Passo 23
Naked Singles
valore: 1.3
categoria doc: Getting_Started
Last candidate 9 in D9 changed to solution
Passo 24
Naked Singles
valore: 1.2
categoria doc: Getting_Started
Last candidate 7 in A9 changed to solution
Last candidate 2 in D7 changed to solution
Passo 25
Naked Singles
valore: 1.2
categoria doc: Getting_Started
Last candidate 6 in B9 changed to solution
Passo 26
Naked Singles
valore: 1.1
categoria doc: Getting_Started
Last candidate 9 in B3 changed to solution
Last candidate 1 in C7 changed to solution
Passo 27
Naked Singles
valore: 1
categoria doc: Getting_Started
Last candidate 1 in A2 changed to solution
Last candidate 7 in B2 changed to solution
Last candidate 6 in C3 changed to solution
Last candidate 2 in F3 changed to solution
Last candidate 8 in G3 changed to solution
Passo 28
Naked Singles
valore: 0.8
categoria doc: Getting_Started
Last candidate 9 in E1 changed to solution
Last candidate 9 in F5 changed to solution
Last candidate 9 in J2 changed to solution
Last candidate 1 in J3 changed to solution
Passo 29
Hidden Singles
valore: 1.3
categoria doc: Getting_Started
8 in J7 is last in row/column/box
9 in G7 is last in row
9 in H4 is last in column/box
Passo 30
Naked Singles
valore: 0.6
categoria doc: Getting_Started
Last candidate 5 in A7 changed to solution
Last candidate 5 in H8 changed to solution
Passo 31
Naked Singles
valore: 0.5
categoria doc: Getting_Started
Last candidate 4 in A1 changed to solution
Last candidate 2 in B8 changed to solution
Last candidate 6 in H7 changed to solution
Passo 32
Naked Singles
valore: 0.4
categoria doc: Getting_Started
Last candidate 2 in A5 changed to solution
Last candidate 9 in A8 changed to solution
Last candidate 5 in B4 changed to solution
Last candidate 5 in C1 changed to solution
Passo 33
Naked Singles
valore: 0.3
categoria doc: Getting_Started
Last candidate 7 in C4 changed to solution
Last candidate 6 in D4 changed to solution
Last candidate 6 in J5 changed to solution
Passo 34
Naked Singles
valore: 0.2
categoria doc: Getting_Started
Last candidate 4 in C5 changed to solution
Last candidate 5 in D5 changed to solution
Last candidate 2 in E4 changed to solution
Last candidate 7 in G5 changed to solution
Last candidate 2 in J1 changed to solution
Passo 35
Naked Singles
valore: 0
categoria doc: Getting_Started
Last candidate 7 in E6 changed to solution
Last candidate 6 in G1 changed to solution
Last candidate 2 in G6 changed to solution