Passi risolutivi (30)
Passo 1
Naked Singles
valore: 1
categoria doc: Getting_Started
Last candidate 8 in A4 changed to solution
Passo 2
Naked Singles
valore: 3
categoria doc: Getting_Started
Last candidate 6 in A2 changed to solution
Last candidate 7 in C4 changed to solution
Last candidate 6 in C5 changed to solution
Passo 3
Naked Singles
valore: 2.7
categoria doc: Getting_Started
Last candidate 2 in A9 changed to solution
Passo 4
Naked Singles
valore: 2.6
categoria doc: Getting_Started
Last candidate 1 in A7 changed to solution
Passo 5
Hidden Singles
valore: 4.9
categoria doc: Getting_Started
1 in B5 is last in row/column/box
1 in E2 is last in row/box
1 in H8 is last in column/box
2 in G5 is last in row
3 in C7 is last in row
5 in F9 is last in column/box
Passo 6
Hidden Singles
valore: 4.1
categoria doc: Getting_Started
1 in G1 is last in row/column/box
2 in H7 is last in row/box
7 in B9 is last in column
Passo 7
Hidden Singles
valore: 3.8
categoria doc: Getting_Started
4 in J7 is last in column/box
Passo 8
Hidden Singles
valore: 3.6
categoria doc: Getting_Started
9 in B7 is last in column
9 in H9 is last in box
Passo 9
Naked Singles
valore: 1.6
categoria doc: Getting_Started
Last candidate 8 in C9 changed to solution
Passo 10
Naked Singles
valore: 1.5
categoria doc: Getting_Started
Last candidate 6 in B8 changed to solution
Last candidate 9 in C1 changed to solution
Last candidate 6 in G9 changed to solution
Passo 11
Naked Singles
valore: 1.4
categoria doc: Getting_Started
Last candidate 8 in J8 changed to solution
Passo 12
Naked Singles
valore: 1.3
categoria doc: Getting_Started
Last candidate 6 in J1 changed to solution
Passo 13
Naked Singles
valore: 1.3
categoria doc: Getting_Started
Last candidate 5 in J6 changed to solution
Passo 14
Naked Singles
valore: 1.1
categoria doc: Getting_Started
Last candidate 4 in B6 changed to solution
Last candidate 9 in J3 changed to solution
Passo 15
Naked Singles
valore: 1.1
categoria doc: Getting_Started
Last candidate 5 in B4 changed to solution
Passo 16
Hidden Singles
valore: 1.9
categoria doc: Getting_Started
5 in D5 is last in row/column/box
5 in H3 is last in row/column/box
6 in H6 is last in row/column/box
9 in D2 is last in column/box
9 in E5 is last in row
Passo 17
Hidden Singles
valore: 1.7
categoria doc: Getting_Started
4 in D3 is last in row
Passo 18
Hidden Singles
valore: 1.6
categoria doc: Getting_Started
4 in G2 is last in row
Passo 19
Naked Pair
valore: 7.3
categoria doc: Naked_Candidates
Naked Pair 2/3 on cells {E4|E8} means
- 2 can be removed from E3
- 3 can be removed from E6
Passo 20
W-Wing
valore: 35.1
categoria doc: W_Wings
W-Wing (single). Either there is a 7 in F2 or in H1. They are connected through 8 in F5/H5, therefore
- 7 can be removed from D1
- 7 can be removed from H2
Passo 21
Hidden Singles
valore: 1.3
categoria doc: Getting_Started
7 in F2 is last in column/box
7 in H1 is last in row/column/box
Passo 22
Rectangle Elimination
valore: 30.9
categoria doc: Rectangle_Elimination
If +8[F3] then -8[F5] forcing +8[H5] which removes all 8s from Box 7, so F3 cannot be 8
Passo 23
Chute Remote Pair
valore: 29.6
categoria doc: Chute_Remote_Pairs
8 cannot be set in the yellow cells {F1,F2,F3} and with the Remote Pair in D7 and E6 it means:
- 7 can be removed from D6
- 7 can be removed from E7
Passo 24
Hidden Singles
valore: 1.1
categoria doc: Getting_Started
7 in D7 is last in row/column/box
7 in E6 is last in row/column/box
Passo 25
Bi-value Universal Grave
valore: 30.5
categoria doc: BUG
BUG+1 found in B3, 8 must be the solution
All other incomplete cells contain two candidates apart from B3. Other candidates in B3 would lead to zero, two or more solutions so they can be removed.
Last candidate 8 in B3 changed to solution
Passo 26
Naked Singles
valore: 0.3
categoria doc: Getting_Started
Last candidate 2 in B1 changed to solution
Last candidate 3 in B2 changed to solution
Last candidate 6 in E3 changed to solution
Last candidate 3 in G3 changed to solution
Passo 27
Naked Singles
valore: 0.2
categoria doc: Getting_Started
Last candidate 8 in D1 changed to solution
Last candidate 8 in E7 changed to solution
Last candidate 2 in F3 changed to solution
Last candidate 8 in G6 changed to solution
Last candidate 8 in H2 changed to solution
Passo 28
Naked Singles
valore: 0.1
categoria doc: Getting_Started
Last candidate 3 in D6 changed to solution
Last candidate 4 in F4 changed to solution
Last candidate 6 in F7 changed to solution
Last candidate 4 in H5 changed to solution
Passo 29
Naked Singles
valore: 0
categoria doc: Getting_Started
Last candidate 2 in D8 changed to solution
Last candidate 2 in E4 changed to solution
Last candidate 8 in F5 changed to solution
Last candidate 3 in H4 changed to solution
Passo 30
Naked Singles
valore: 0
categoria doc: Getting_Started
Last candidate 3 in E8 changed to solution