Last candidate 6 in H9 changed to solution Last candidate 8 in G9 changed to solution

Last candidate 9 in G7 changed to solution Last candidate 3 in J7 changed to solution

1 in C4 is last in column/box
3 in B1 is last in row
3 in C9 is last in box
3 in E5 is last in column/box
5 in A5 is last in row/box
5 in F7 is last in row/column/box
8 in J4 is last in row/box

4 in D9 is last in column
9 in J5 is last in row/box

4 in E2 is last in column
6 in G5 is last in column

8 in D2 is last in column

Hidden Pair 4/5 in Col 3, on cells {G3|H3}
- removes 1/2 from G3

1 in G1 is last in row/box

Pair: between Box 3 and Row A:
- 2 can be removed from A3
- 2 can be removed from A6

Pair: between Box 1 and Row C:
- 2 can be removed from C5
- 2 can be removed from C6

2 in B5 is last in column

Pair: between Box 2 and Col 6:
- 9 can be removed from E6
- 9 can be removed from F6

XYZ-Wing pattern. Hinge: D1 (2/7/9), wings C1 F2, therefore
- 2 can be removed from F1

length=7, chain ends: C1 and J2
This proves 2 is the solution at one or possibly both ends of the chain
-2[C1]+9[C1]-9[A3]+8[A3]-8[A8]+2[A8]-2[A9]+1[A9]-1[F9]+2[F9]-2[F2]+7[F2]-7[J2]+2[J2]
- 2 can be removed from J1

Type 2b: removing 8 at C6 because of BC67 and one strong link on 4 between B7 and C7

Some solution combinations in the two gray cells would empty at least one of the coloured cells. Removing those combinations create eliminations in the gray cells.
Pair F1 / F3 reduced from 6/7/9->6/9 and 1/2/3/6/9->1/3/6/9
- Combinations of 2/3/7/9 found in ALS {D1,D3,F2}
- Combinations of 1/2/6/7 found in ALS {F2,F6,F9}
Note: some ALSs share cells and cannot be fully colour indicated

(RULE 5): Uncoloured candidate 6 in F6 can see coloured 6 elsewhere and an oppositely coloured 7 in its own cell. It can be removed.

6 in E6 is last in column/box

Naked Pair 2/7 on cells {F2|F6} means
- 2 can be removed from F8
- 2 can be removed from F9
Last candidate 1 in F9 changed to solution

Last candidate 2 in A9 changed to solution Last candidate 8 in E7 changed to solution Last candidate 8 in A8 changed to solution Last candidate 4 in B7 changed to solution Last candidate 7 in C7 changed to solution

Last candidate 9 in A3 changed to solution Last candidate 7 in A6 changed to solution Last candidate 1 in A7 changed to solution Last candidate 8 in B6 changed to solution Last candidate 2 in C1 changed to solution Last candidate 8 in C3 changed to solution Last candidate 4 in C5 changed to solution Last candidate 9 in C6 changed to solution Last candidate 2 in F6 changed to solution Last candidate 4 in G6 changed to solution Last candidate 7 in H5 changed to solution Last candidate 9 in E4 changed to solution Last candidate 2 in E8 changed to solution Last candidate 7 in F2 changed to solution Last candidate 5 in G3 changed to solution Last candidate 2 in G4 changed to solution Last candidate 4 in H3 changed to solution Last candidate 5 in H4 changed to solution Last candidate 2 in J2 changed to solution Last candidate 6 in J3 changed to solution

Last candidate 9 in D1 changed to solution Last candidate 7 in D4 changed to solution Last candidate 3 in D8 changed to solution Last candidate 1 in E3 changed to solution Last candidate 6 in F1 changed to solution Last candidate 3 in F3 changed to solution Last candidate 9 in F8 changed to solution Last candidate 7 in J1 changed to solution Last candidate 2 in D3 changed to solution