Passi risolutivi (13)
Passo 1
Naked Singles
valore: 1
categoria doc: Getting_Started
Last candidate 8 in E3 changed to solution
Last candidate 3 in E7 changed to solution
Last candidate 9 in D8 changed to solution
Passo 2
Naked Singles
valore: 2.3
categoria doc: Getting_Started
Last candidate 1 in D3 changed to solution
Last candidate 2 in D1 changed to solution
Last candidate 7 in F1 changed to solution
Last candidate 9 in F2 changed to solution
Passo 3
Hidden Singles
valore: 3.7
categoria doc: Getting_Started
2 in F6 is last in column
3 in J1 is last in row/box
5 in D4 is last in column
6 in J4 is last in column/box
9 in A5 is last in row/column/box
9 in H7 is last in column/box
9 in J3 is last in row
Passo 4
Naked Singles
valore: 1.6
categoria doc: Getting_Started
Last candidate 6 in C1 changed to solution
Last candidate 5 in A1 changed to solution
Last candidate 1 in H1 changed to solution
Passo 5
Hidden Singles
valore: 2.8
categoria doc: Getting_Started
1 in F5 is last in row/box
1 in J6 is last in column
3 in A6 is last in row
5 in B9 is last in row/column/box
Passo 6
Hidden Singles
valore: 2.4
categoria doc: Getting_Started
2 in G9 is last in column
3 in D5 is last in row/column/box
Passo 7
Naked Pair
valore: 10.6
categoria doc: Naked_Candidates
Naked Pair 4/7 on cells {B3|C3} means
- 4/7 can be removed from B2
- 4/7 can be removed from C2
- 4/7 can be removed from G3
- 4/7 can be removed from H3
Passo 8
Pointing Pairs
valore: 30.9
categoria doc: Intersection_Removal
Triple: between Box 8 and Col 5:
- 7 can be removed from B5
- 7 can be removed from C5
Passo 9
Line/Unit Reduction
valore: 40.7
categoria doc: Intersection_Removal
Line/Box Reduction: 6s in box 9 remove the following in the same box:
- 6 can be removed from G7
Passo 10
Chute Remote Pair
valore: 50.2
categoria doc: Chute_Remote_Pairs
4 cannot be set in the yellow cells {H7,H8,H9} and with the Remote Pair in G2 and J5 it means:
- 7 can be removed from G5
Passo 11
X-Cycle
valore: 118.8
categoria doc: X_Cycles
X-CYCLE on 4 (Discontinuous Alternating Nice Loop, length 6):
-4[D6]+4[D9]-4[J9]+4[J5]-4[H6]+4[D6]
- Contradiction: When 4 is removed from D6 the chain implies it must be 4 - other candidates 8 can be removed
Last candidate 4 in D6 changed to solution
Last candidate 8 in D9 changed to solution
Last candidate 8 in F4 changed to solution
Last candidate 8 in H6 changed to solution
Passo 12
Naked Singles
valore: 0.6
categoria doc: Getting_Started
Last candidate 7 in A4 changed to solution
Last candidate 6 in A9 changed to solution
Last candidate 4 in B4 changed to solution
Last candidate 4 in F9 changed to solution
Last candidate 7 in J9 changed to solution
Last candidate 8 in A7 changed to solution
Last candidate 7 in B3 changed to solution
Last candidate 4 in C3 changed to solution
Last candidate 2 in C7 changed to solution
Last candidate 6 in F7 changed to solution
Last candidate 6 in H8 changed to solution
Last candidate 4 in J5 changed to solution
Passo 13
Naked Singles
valore: 0.1
categoria doc: Getting_Started
Last candidate 1 in B7 changed to solution
Last candidate 3 in B8 changed to solution
Last candidate 8 in C5 changed to solution
Last candidate 7 in C8 changed to solution
Last candidate 5 in G5 changed to solution
Last candidate 4 in G7 changed to solution
Last candidate 1 in G8 changed to solution
Last candidate 5 in H3 changed to solution
Last candidate 7 in H5 changed to solution
Last candidate 8 in B2 changed to solution
Last candidate 2 in B5 changed to solution
Last candidate 3 in C2 changed to solution
Last candidate 7 in G2 changed to solution
Last candidate 6 in G3 changed to solution
Last candidate 4 in H2 changed to solution