Passi risolutivi (32)
Passo 1
Naked Singles
valore: 0
categoria doc: Getting_Started
Last candidate 9 in H1 changed to solution
Passo 2
Naked Singles
valore: 2.7
categoria doc: Getting_Started
Last candidate 5 in G1 changed to solution
Passo 3
Naked Singles
valore: 2.7
categoria doc: Getting_Started
Last candidate 4 in J1 changed to solution
Passo 4
Naked Singles
valore: 2.6
categoria doc: Getting_Started
Last candidate 7 in B1 changed to solution
Last candidate 1 in E1 changed to solution
Passo 5
Hidden Singles
valore: 4.5
categoria doc: Getting_Started
1 in A3 is last in column/box
2 in B6 is last in row/box
2 in D8 is last in box
2 in H9 is last in column
5 in J8 is last in row/box
7 in A7 is last in column/box
Passo 6
Hidden Singles
valore: 3.9
categoria doc: Getting_Started
9 in A8 is last in row/box
9 in J7 is last in column
Passo 7
Pointing Pairs
valore: 55.3
categoria doc: Intersection_Removal
Pair: between Box 1 and Col 2:
- 5 can be removed from F2
Passo 8
Chute Remote Pair
valore: 91.5
categoria doc: Chute_Remote_Pairs
6 cannot be set in the yellow cells {A7,B7,C7} and with the Remote Pair in E9 and G8 it means:
- 3 can be removed from E8
Passo 9
Hidden Singles
valore: 3.6
categoria doc: Getting_Started
3 in G8 is last in column
Passo 10
Naked Singles
valore: 1.7
categoria doc: Getting_Started
Last candidate 2 in G2 changed to solution
Last candidate 6 in H7 changed to solution
Passo 11
Hidden Singles
valore: 3.1
categoria doc: Getting_Started
2 in F5 is last in column
2 in J4 is last in row/box
6 in J3 is last in column/box
Passo 12
Pointing Pairs
valore: 42.9
categoria doc: Intersection_Removal
Pair: between Box 6 and Row E:
- 6 can be removed from E4
- 6 can be removed from E5
- 6 can be removed from E6
Passo 13
Simple Colouring
valore: 138.9
categoria doc: Singles_Chains
(RULE 4): Uncoloured candidate 8 in C6 can see two different coloured candidates of 8 elsewhere.
(RULE 4): Uncoloured candidate 8 in D6 can see two different coloured candidates of 8 elsewhere.
(RULE 4): Uncoloured candidate 8 in E4 can see two different coloured candidates of 8 elsewhere.
Passo 14
3D Medusa
valore: 217.9
categoria doc: 3D_Medusa
(RULE 4): Uncoloured candidate 3 in E2 can see two different coloured candidates of 3 elsewhere.
(RULE 4): Uncoloured candidate 3 in E4 can see two different coloured candidates of 3 elsewhere.
Passo 15
Rectangle Elimination
valore: 67.4
categoria doc: Rectangle_Elimination
If +3[F4] then -3[F2] forcing +3[J2] which removes all 3s from box 8, so F4 cannot be 3
Passo 16
XY-Chain
valore: 200.1
categoria doc: XY_Chains
length=5, chain ends: F2 and E9
This proves 3 is the solution at one or possibly both ends of the chain
-3[F2]+9[F2]-9[E2]+4[E2]-4[E5]+8[E5]-8[E8]+6[E8]-6[E9]+3[E9]
- 3 can be removed from F7
Last candidate 1 in F7 changed to solution
Passo 17
W-Wing
valore: 63.3
categoria doc: W_Wings
W-Wing (single). Either there is a 3 in D7 or in H3. They are connected through 8 in B7/B3, therefore
- 3 can be removed from D3
Passo 18
Pointing Pairs
valore: 37.6
categoria doc: Intersection_Removal
Pair: between Box 4 and Row F:
- 3 can be removed from F6
Passo 19
XY-Chain
valore: 210.5
categoria doc: XY_Chains
length=6, chain ends: E9 and J6
This proves 3 is the solution at one or possibly both ends of the chain
-3[E9]+6[E9]-6[E8]+8[E8]-8[E5]+4[E5]-4[E2]+9[E2]-9[F2]+3[F2]-3[J2]+3[J6]
- 3 can be removed from E6
Passo 20
Hidden Singles
valore: 2.4
categoria doc: Getting_Started
3 in E9 is last in row
Passo 21
Naked Singles
valore: 1.2
categoria doc: Getting_Started
Last candidate 4 in B9 changed to solution
Last candidate 8 in D7 changed to solution
Passo 22
Naked Singles
valore: 1.1
categoria doc: Getting_Started
Last candidate 8 in B3 changed to solution
Last candidate 3 in B7 changed to solution
Last candidate 6 in E8 changed to solution
Passo 23
Naked Singles
valore: 1
categoria doc: Getting_Started
Last candidate 8 in C8 changed to solution
Last candidate 3 in H3 changed to solution
Passo 24
Naked Singles
valore: 0.9
categoria doc: Getting_Started
Last candidate 5 in F3 changed to solution
Last candidate 8 in H4 changed to solution
Last candidate 8 in J2 changed to solution
Passo 25
Naked Singles
valore: 0.8
categoria doc: Getting_Started
Last candidate 4 in D3 changed to solution
Last candidate 3 in J6 changed to solution
Passo 26
Naked Singles
valore: 0.7
categoria doc: Getting_Started
Last candidate 1 in D5 changed to solution
Last candidate 9 in E2 changed to solution
Passo 27
Naked Singles
valore: 0.6
categoria doc: Getting_Started
Last candidate 3 in D4 changed to solution
Last candidate 5 in D6 changed to solution
Last candidate 3 in F2 changed to solution
Last candidate 6 in G5 changed to solution
Passo 28
Naked Singles
valore: 0.5
categoria doc: Getting_Started
Last candidate 4 in C5 changed to solution
Passo 29
Naked Singles
valore: 0.4
categoria doc: Getting_Started
Last candidate 6 in A4 changed to solution
Last candidate 5 in C2 changed to solution
Last candidate 8 in E5 changed to solution
Passo 30
Naked Singles
valore: 0.2
categoria doc: Getting_Started
Last candidate 4 in A2 changed to solution
Last candidate 8 in A6 changed to solution
Last candidate 5 in A9 changed to solution
Last candidate 6 in C9 changed to solution
Last candidate 7 in E6 changed to solution
Last candidate 9 in F4 changed to solution
Passo 31
Naked Singles
valore: 0.1
categoria doc: Getting_Started
Last candidate 1 in C6 changed to solution
Last candidate 4 in E4 changed to solution
Last candidate 6 in F6 changed to solution
Last candidate 1 in G4 changed to solution
Passo 32
Naked Singles
valore: 0
categoria doc: Getting_Started
Last candidate 7 in C4 changed to solution
Last candidate 9 in G6 changed to solution