Last candidate 4 in J4 changed to solution

5 in E4 is last in column/box
6 in C4 is last in column/box

7 in C6 is last in row/box
7 in D4 is last in column

8 in C2 is last in row
8 in D8 is last in row

8 in G9 is last in column/box

Last candidate 9 in G4 changed to solution

Last candidate 8 in H4 changed to solution

Last candidate 1 in H5 changed to solution

9 in H8 is last in row/box

Naked Pair 2/9 on cells {A5|A6} means
- 2/9 can be removed from A1
- 2 can be removed from A8
- 9 can be removed from A9
- 2/9 can be removed from B5
- 2/9 can be removed from B6

Naked Pair 4/8 on cells {B5|B6} means
- 4 can be removed from B7
- 4 can be removed from B9

Pair: between Box 5 and Row F:
- 9 can be removed from F3

If +1[C9] then -1[J9] forcing +1[J1] which removes all 1s from Box 1, so C9 cannot be 1

Uniqueness Type 2 (Row) at BE56

The 3 in the roof cells (orange) stops a Deadly Pattern forming, so it must be placed in either E5 or E6. So..
The 3 in the roof cells (orange) stops a Deadly Pattern forming, so it must be placed in either E5 or E6. So..
The 3 in the roof cells (orange) stops a Deadly Pattern forming, so it must be placed in either E5 or E6. So..
The 3 in the roof cells (orange) stops a Deadly Pattern forming, so it must be placed in either E5 or E6. So..
- 3 can be removed from E8
- 3 can be removed from E9
- 3 can be removed from F5
- 3 can be removed from F6

Naked Pair 4/9 on cells {F5|F6} means
- 4 can be removed from E5
- 4 can be removed from E6
- 4 can be removed from F2
- 4 can be removed from F7
- 4 can be removed from F8
- 4 can be removed from F9

If +4[E1] then -4[H1] forcing +4[H7] which removes all 4s from Box 6, so E1 cannot be 4

WXYZ Wing Type 1: The four cells {D1,C1,D2,J1} contain in total 1/2/4/9 with the hinge on D1.
Non-Restricted candidate 2 determines the 'wing' cells (in yellow) and one of those 2s must be true. Therefore...
- 2 can be removed from E1

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 D1 / E1 reduced from 2/4/9->2/4/9 and 1/7->7
- Combinations of 1/2/4 found in ALS {D2,E2}
Note: some ALSs share cells and cannot be fully colour indicated
Last candidate 7 in E1 changed to solution

7 in F9 is last in row/column/box
7 in H3 is last in row/column/box

6 in F7 is last in row/box

If +1[C1] then -1[C7] forcing +1[G7] which removes all 1s from Box 7, so C1 cannot be 1

If +1[G1] then -1[G7] forcing +1[C7] which removes all 1s from Box 1, so G1 cannot be 1

If either +5[A1] or +5[G8] are ON then both are on because they are strongly linked through the hinge cell A8. If both are ON then this removes all 5s from Box 7, so neither can be 5

5 in A8 is last in row/column

Last candidate 2 in B7 changed to solution

2 in E8 is last in column/box

Line/Box Reduction: 5s in box 7 remove the following in the same box:
- 5 can be removed from G2
- 5 can be removed from G3

Naked Pair 1/2 on cells {G3|J1} means
- 2 can be removed from G1
- 1/2 can be removed from G2

2 in D2 is last in column

Line/Box Reduction: 1s in box 4 remove the following in the same box:
- 1 can be removed from F3

Hidden Pair 1/2 in Col 3, on cells {C3|G3}
- removes 9 from C3

(Col->Row) 1 taken off E9, based on AJ19
Last candidate 4 in E9 changed to solution

Last candidate 3 in D7 changed to solution
Last candidate 1 in E2 changed to solution

Last candidate 9 in D3 changed to solution
Last candidate 5 in F2 changed to solution
Last candidate 1 in F8 changed to solution

Last candidate 6 in B2 changed to solution
Last candidate 5 in B3 changed to solution
Last candidate 4 in D1 changed to solution
Last candidate 3 in F3 changed to solution

Last candidate 1 in A1 changed to solution
Last candidate 9 in B9 changed to solution
Last candidate 4 in G2 changed to solution
Last candidate 5 in H1 changed to solution

Last candidate 6 in A9 changed to solution
Last candidate 2 in C3 changed to solution
Last candidate 3 in C9 changed to solution
Last candidate 6 in G1 changed to solution
Last candidate 3 in G8 changed to solution
Last candidate 4 in H7 changed to solution
Last candidate 2 in J1 changed to solution

Last candidate 9 in C1 changed to solution
Last candidate 1 in C7 changed to solution
Last candidate 4 in C8 changed to solution
Last candidate 1 in G3 changed to solution
Last candidate 2 in G6 changed to solution
Last candidate 3 in J5 changed to solution
Last candidate 1 in J9 changed to solution

Last candidate 9 in A6 changed to solution
Last candidate 8 in E5 changed to solution
Last candidate 5 in G7 changed to solution

Last candidate 2 in A5 changed to solution
Last candidate 4 in B5 changed to solution
Last candidate 3 in E6 changed to solution
Last candidate 4 in F6 changed to solution

Last candidate 8 in B6 changed to solution
Last candidate 9 in F5 changed to solution