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

For row 3, number 1 is only possible in cell (3,3)

For row 6, number 1 is only possible in cell (7,6)

For column 2, Number 1 is only possible in cell (2,7)

For column 3, Number 9 is only possible in cell (3,7)

For row 1, number 7 is only possible in cell (5,1)

For column 6, Number 7 is only possible in cell (6,4)

For box 7, Number 7 is only possible in cell (1,7)

For box 3, candidates for 9 are all in row 1, so you can remove candidates from other blocks.

For box 7, candidates for 6 are all in row 9, so you can remove candidates from other blocks.

Number 5 is the only value possible in cell (7,9).

For box 7, candidates for 2 are all in row 9, so you can remove candidates from other blocks.

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

For row 8, number 1 is only possible in cell (5,8)

For box 9, candidates for 2 are all in row 8, so you can remove candidates from other blocks.

Naked Pair for 7 and 8, can remove these as candidates from other cells.

For column 3, Number 7 is only possible in cell (3,6)

Candidates for 8 in boxes 4 and 5 force the candidates in box 6 to be in the remaining line.

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

For box 8, candidates for 6 are all in column 6, so you can remove candidates from other blocks.

For row 3, number 6 is only possible in cell (5,3)

For row 3, number 2 is only possible in cell (4,3)

Number 5 is the only value possible in cell (4,7).

Number 2 is the only value possible in cell (5,7).

For row 3, number 5 is only possible in cell (9,3)

For row 1, number 5 is only possible in cell (3,1)

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

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

Number 6 is the only value possible in cell (3,5).

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

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

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

Number 3 is the only value possible in cell (5,4).

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

Number 2 is the only value possible in cell (9,4).

Number 2 is the only value possible in cell (1,6).

Number 3 is the only value possible in cell (8,6).

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

Number 7 is the only value possible in cell (8,5).

Number 8 is the only value possible in cell (7,5).

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

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

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

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

Number 3 is the only value possible in cell (6,7).

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

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

Number 4 is the only value possible in cell (7,1).

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

Number 3 is the only value possible in cell (4,1).

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

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

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

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

Number 9 is the only value possible in cell (6,2).

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

Number 8 is the only value possible in cell (5,6).

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

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

Number 6 is the only value possible in cell (1,9).

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

Number 8 is the only value possible in cell (6,9).