Passi risolutivi (26)
Passo 1
Naked Singles
valore: 2
categoria doc: Getting_Started
Last candidate 4 in B3 changed to solution
Last candidate 4 in H8 changed to solution
Passo 2
Hidden Singles
valore: 4.8
categoria doc: Getting_Started
1 in C3 is last in row/box
2 in E4 is last in column
3 in E6 is last in column
3 in H4 is last in row/box
4 in J1 is last in row/box
6 in E3 is last in column/box
6 in H9 is last in column/box
8 in B5 is last in column/box
Passo 3
Hidden Singles
valore: 3.8
categoria doc: Getting_Started
2 in A5 is last in column/box
2 in D9 is last in column
3 in A7 is last in column
3 in F9 is last in row/box
6 in B6 is last in row/box
6 in D5 is last in column
6 in G4 is last in column
Passo 4
Naked Singles
valore: 1.6
categoria doc: Getting_Started
Last candidate 5 in B9 changed to solution
Passo 5
Naked Singles
valore: 1.5
categoria doc: Getting_Started
Last candidate 2 in B2 changed to solution
Passo 6
Naked Singles
valore: 1.5
categoria doc: Getting_Started
Last candidate 3 in B1 changed to solution
Passo 7
Hidden Singles
valore: 2.9
categoria doc: Getting_Started
1 in D7 is last in row/box
1 in J9 is last in column
Passo 8
Hidden Singles
valore: 2.6
categoria doc: Getting_Started
1 in G1 is last in row
1 in H5 is last in column/box
Passo 9
Hidden Singles
valore: 2.4
categoria doc: Getting_Started
2 in G7 is last in row
2 in H1 is last in column/box
Passo 10
Naked Singles
valore: 1.1
categoria doc: Getting_Started
Last candidate 7 in H7 changed to solution
Passo 11
Naked Singles
valore: 1
categoria doc: Getting_Started
Last candidate 9 in H2 changed to solution
Passo 12
Hidden Singles
valore: 2.1
categoria doc: Getting_Started
9 in A3 is last in column
Passo 13
X-Cycle
valore: 146.5
categoria doc: X_Cycles
X-CYCLE on 5 (Discontinuous Alternating Nice Loop, length 8):
+5[E1]-5[E7]+5[J7]-5[G8]+5[G6]-5[A6]+5[A1]-5[E1]
- Contradiction: When E1 is set to 5 the chain implies it cannot be 5 - it can be removed
Passo 14
XY-Chain
valore: 182.9
categoria doc: XY_Chains
length=7, chain ends: A1 and G6
This proves 5 is the solution at one or possibly both ends of the chain
-5[A1]+7[A1]-7[A9]+4[A9]-4[C7]+8[C7]-8[J7]+5[J7]-5[G8]+8[G8]-8[G3]+7[G3]-7[G6]+5[G6]
- 5 can be removed from A6
Last candidate 4 in A6 changed to solution
Passo 15
Naked Singles
valore: 0.9
categoria doc: Getting_Started
Last candidate 7 in A9 changed to solution
Passo 16
Naked Singles
valore: 0.8
categoria doc: Getting_Started
Last candidate 5 in A1 changed to solution
Passo 17
Naked Singles
valore: 0.8
categoria doc: Getting_Started
Last candidate 7 in C2 changed to solution
Passo 18
Hidden Singles
valore: 1.4
categoria doc: Getting_Started
4 in D2 is last in row
4 in F4 is last in column/box
Passo 19
Naked Singles
valore: 0.6
categoria doc: Getting_Started
Last candidate 5 in F2 changed to solution
Passo 20
X-Wing
valore: 37.1
categoria doc: X_Wing_Strategy
(Col->Row) 5 taken off C6, based on DG68
Last candidate 9 in C6 changed to solution
Passo 21
Naked Singles
valore: 0.6
categoria doc: Getting_Started
Last candidate 5 in C4 changed to solution
Passo 22
Naked Singles
valore: 0.5
categoria doc: Getting_Started
Last candidate 9 in J4 changed to solution
Passo 23
Unique Rectangle Type 1
valore: 19.8
categoria doc: Unique_Rectangle
Uniqueness Type 1 removing 4/8 at E7 because of C7,C9,E9
Last candidate 5 in E7 changed to solution
Passo 24
Naked Singles
valore: 0.3
categoria doc: Getting_Started
Last candidate 9 in D8 changed to solution
Last candidate 9 in E5 changed to solution
Last candidate 8 in J7 changed to solution
Passo 25
Naked Singles
valore: 0.1
categoria doc: Getting_Started
Last candidate 4 in C7 changed to solution
Last candidate 7 in D1 changed to solution
Last candidate 8 in E1 changed to solution
Last candidate 7 in F5 changed to solution
Last candidate 8 in F8 changed to solution
Last candidate 5 in G8 changed to solution
Last candidate 7 in J3 changed to solution
Passo 26
Naked Singles
valore: 0
categoria doc: Getting_Started
Last candidate 8 in C9 changed to solution
Last candidate 5 in D6 changed to solution
Last candidate 4 in E9 changed to solution
Last candidate 9 in F1 changed to solution
Last candidate 8 in G3 changed to solution
Last candidate 7 in G6 changed to solution
Last candidate 5 in J5 changed to solution