Passi risolutivi (33)
Passo 1
Naked Singles
valore: 0
categoria doc: Getting_Started
Last candidate 9 in J7 changed to solution
Passo 2
Naked Singles
valore: 2.8
categoria doc: Getting_Started
Last candidate 8 in J9 changed to solution
Passo 3
Naked Singles
valore: 2.7
categoria doc: Getting_Started
Last candidate 1 in H8 changed to solution
Passo 4
Naked Singles
valore: 2.6
categoria doc: Getting_Started
Last candidate 4 in C8 changed to solution
Last candidate 3 in G9 changed to solution
Passo 5
Naked Singles
valore: 2.4
categoria doc: Getting_Started
Last candidate 1 in B7 changed to solution
Last candidate 9 in B8 changed to solution
Last candidate 7 in H7 changed to solution
Passo 6
Naked Singles
valore: 2.1
categoria doc: Getting_Started
Last candidate 8 in D8 changed to solution
Passo 7
Hidden Singles
valore: 3.7
categoria doc: Getting_Started
5 in A3 is last in column/box
5 in G6 is last in row/column/box
6 in C7 is last in row/column/box
6 in F6 is last in row/box
6 in H3 is last in column/box
7 in E3 is last in row/box
7 in G2 is last in column
Passo 8
Naked Singles
valore: 1.7
categoria doc: Getting_Started
Last candidate 2 in A9 changed to solution
Passo 9
Naked Singles
valore: 1.6
categoria doc: Getting_Started
Last candidate 5 in C9 changed to solution
Passo 10
Hidden Singles
valore: 2.9
categoria doc: Getting_Started
5 in D7 is last in row/column/box
6 in J4 is last in row/column/box
8 in F5 is last in row/box
Passo 11
Hidden Pair
valore: 25.9
categoria doc: Hidden_Candidates
Hidden Pair 1/3 in Col 1, on cells {D1|F1}
- removes 2/4/9 from D1
- removes 2/4/9 from F1
Passo 12
Hidden Singles
valore: 2.6
categoria doc: Getting_Started
9 in G1 is last in column
Passo 13
Pointing Pairs
valore: 37.1
categoria doc: Intersection_Removal
Pair: between Box 5 and Row D:
- 2 can be removed from D3
Passo 14
Pointing Pairs
valore: 36.3
categoria doc: Intersection_Removal
Pair: between Box 1 and Row B:
- 8 can be removed from B4
- 8 can be removed from B6
Passo 15
Line/Unit Reduction
valore: 47.3
categoria doc: Intersection_Removal
Line/Box Reduction: 1s in box 5 remove the following in the same box:
- 1 can be removed from D4
- 1 can be removed from D5
Passo 16
Line/Unit Reduction
valore: 45.7
categoria doc: Intersection_Removal
Line/Box Reduction: 3s in box 5 remove the following in the same box:
- 3 can be removed from D4
- 3 can be removed from E4
- 3 can be removed from E6
Passo 17
Line/Unit Reduction
valore: 45.1
categoria doc: Intersection_Removal
Line/Box Reduction: 9s in box 5 remove the following in the same box:
- 9 can be removed from D4
Passo 18
Chute Remote Pair
valore: 55.7
categoria doc: Chute_Remote_Pair
4 cannot be set in the yellow cells {A5,B5,C5} and with the Remote Pair in D4 and J6 it means:
- 2 can be removed from H4
Passo 19
Pointing Pairs
valore: 32.6
categoria doc: Intersection_Removal
Pair: between Box 8 and Col 6:
- 2 can be removed from B6
- 2 can be removed from C6
Passo 20
Y-Wing
valore: 84.7
categoria doc: Y_Wing_Strategy
Y-Wing pattern. Hinge: H2 (2/8), wings F2 G3, therefore
- 4 can be removed from D3
- 4 can be removed from F3
Last candidate 9 in D3 changed to solution
Passo 21
Naked Singles
valore: 1
categoria doc: Getting_Started
Last candidate 1 in D9 changed to solution
Last candidate 2 in F3 changed to solution
Passo 22
Naked Singles
valore: 0.9
categoria doc: Getting_Started
Last candidate 3 in D1 changed to solution
Last candidate 4 in F2 changed to solution
Last candidate 9 in F9 changed to solution
Passo 23
Naked Singles
valore: 0.8
categoria doc: Getting_Started
Last candidate 1 in F1 changed to solution
Last candidate 3 in F7 changed to solution
Passo 24
Naked Singles
valore: 0.8
categoria doc: Getting_Started
Last candidate 4 in E7 changed to solution
Passo 25
Hidden Singles
valore: 1.5
categoria doc: Getting_Started
3 in E5 is last in row/column/box
Passo 26
Rectangle Elimination
valore: 35.1
categoria doc: Rectangle_Elimination
If +4[B6] then -4[B3] forcing +4[G3] which removes all 4s from box 8, so B6 cannot be 4
Last candidate 3 in B6 changed to solution
Passo 27
Hidden Singles
valore: 1.3
categoria doc: Getting_Started
3 in H4 is last in row/column/box
Passo 28
Naked Pair
valore: 5.9
categoria doc: Naked_Candidates
Naked Pair 2/4 on cells {B4|D4} means
- 4 can be removed from A4
- 2 can be removed from C4
- 4 can be removed from G4
Passo 29
Bi-value Universal Grave
valore: 33.8
categoria doc: BUG
BUG+1 found in C4, 1 must be the solution
All other incomplete cells contain two candidates apart from C4. Other candidates in C4 would create two or more solutions so they can be removed.
Last candidate 1 in C4 changed to solution
Passo 30
Naked Singles
valore: 0.5
categoria doc: Getting_Started
Last candidate 2 in C5 changed to solution
Last candidate 8 in C6 changed to solution
Last candidate 9 in E4 changed to solution
Last candidate 8 in G4 changed to solution
Passo 31
Naked Singles
valore: 0.3
categoria doc: Getting_Started
Last candidate 7 in A4 changed to solution
Last candidate 4 in B4 changed to solution
Last candidate 7 in C1 changed to solution
Last candidate 4 in D5 changed to solution
Last candidate 1 in E6 changed to solution
Last candidate 4 in G3 changed to solution
Last candidate 2 in H6 changed to solution
Passo 32
Naked Singles
valore: 0.1
categoria doc: Getting_Started
Last candidate 4 in A1 changed to solution
Last candidate 9 in A6 changed to solution
Last candidate 8 in B3 changed to solution
Last candidate 2 in D4 changed to solution
Last candidate 1 in G5 changed to solution
Last candidate 8 in H2 changed to solution
Last candidate 2 in J1 changed to solution
Last candidate 4 in J6 changed to solution
Passo 33
Naked Singles
valore: 0
categoria doc: Getting_Started
Last candidate 2 in B2 changed to solution