For row 3, number 7 is only possible in cell (8,3)

For row 5, number 7 is only possible in cell (5,5)

For row 7, number 7 is only possible in cell (2,7)

For row 9, number 2 is only possible in cell (1,9)

For row 8, number 2 is only possible in cell (7,8)

For column 3, Number 6 is only possible in cell (3,5)

For row 2, number 1 is only possible in cell (8,2)

For box 5, candidates for 1 are all in column 6, so you can remove candidates from other blocks.

For box 6, candidates for 4 are all in row 5, so you can remove candidates from other blocks.

Number 5 is the only value possible in cell (1,5).

Candidates for 9 in boxes 5 and 8 force the candidates in box 2 to be in the remaining line.

Naked Pair for 3 and 6, can remove these as candidates from other cells.

Naked Pair for 4 and 8, can remove these as candidates from other cells.

Naked Pair for 1 and 8, can remove these as candidates from other cells.

Candidates for 8 in boxes 2 and 5 force the candidates in box 8 to be in the remaining line.

Number 6 is the only value possible in cell (6,8).

For row 3, number 6 is only possible in cell (7,3)

Number 8 is the only value possible in cell (7,1).

Number 2 is the only value possible in cell (9,1).

Number 3 is the only value possible in cell (9,2).

Number 6 is the only value possible in cell (9,4).

Number 3 is the only value possible in cell (8,4).

Number 3 is the only value possible in cell (7,7).

Number 4 is the only value possible in cell (4,7).

Number 8 is the only value possible in cell (9,7).

Number 4 is the only value possible in cell (9,5).

Number 8 is the only value possible in cell (8,5).

Number 1 is the only value possible in cell (5,7).

Number 5 is the only value possible in cell (3,7).

Number 6 is the only value possible in cell (8,7).

Number 8 is the only value possible in cell (5,8).

Number 3 is the only value possible in cell (1,8).

Number 4 is the only value possible in cell (1,6).

Number 8 is the only value possible in cell (1,3).

Number 9 is the only value possible in cell (3,2).

Number 2 is the only value possible in cell (5,2).

Number 5 is the only value possible in cell (2,2).

Number 4 is the only value possible in cell (2,1).

Number 5 is the only value possible in cell (6,1).

Number 6 is the only value possible in cell (4,1).

Number 8 is the only value possible in cell (4,2).

Number 3 is the only value possible in cell (3,3).

Number 2 is the only value possible in cell (2,3).

Number 9 is the only value possible in cell (5,3).

Number 4 is the only value possible in cell (6,3).

Number 1 is the only value possible in cell (3,6).

Number 9 is the only value possible in cell (2,5).

Number 1 is the only value possible in cell (7,5).

Number 9 is the only value possible in cell (7,4).

Number 5 is the only value possible in cell (4,4).

Number 1 is the only value possible in cell (6,4).

Number 3 is the only value possible in cell (2,6).

Number 9 is the only value possible in cell (4,6).

Number 8 is the only value possible in cell (6,6).

Number 1 is the only value possible in cell (2,8).

Number 5 is the only value possible in cell (8,8).

Number 8 is the only value possible in cell (3,9).

Number 3 is the only value possible in cell (4,9).

Number 9 is the only value possible in cell (6,9).

Number 4 is the only value possible in cell (8,9).