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

For row 3, number 9 is only possible in cell (7,3)

For row 6, number 8 is only possible in cell (6,6)

For row 1, number 7 is only possible in cell (2,1)

For row 7, number 2 is only possible in cell (3,7)

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

For box 3, candidates for 8 are all in row 1, so you can remove candidates from other blocks.

For column 1, Number 8 is only possible in cell (1,3)

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

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

For box 5, candidates for 2 are all in column 4, so you can remove candidates from other blocks.

For box 7, candidates for 3 are all in row 9, so you can remove candidates from other blocks.

Candidates for 1 in boxes 1 and 3 force the candidates in box 2 to be in the remaining line.

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

For box 3, candidates for 4 are all in row 1, so you can remove candidates from other blocks.

Hidden Pair for 6 and 9, can remove other candidates from these cells.

For row 9, number 3 is only possible in cell (1,9)

Naked Triple for 1, 2 and 5, can remove these as candidates from other cells.

Either candidate for cell (1,4) forces 1 into cell (6,5).

For column 4, Number 1 is only possible in cell (4,3)

Either candidate for cell (1,4) forces 5 into cell (4,4).

Number 2 is the only value possible in cell (4,5).

For column 8, Number 2 is only possible in cell (8,6)

Naked Triple for 2, 6 and 9, can remove these as candidates from other cells.

Either candidate for cell (1,1) forces 3 into cell (3,2).

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

Either candidate for cell (7,5) forces 8 into cell (7,1).

For column 7, Number 3 is only possible in cell (7,4)

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

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

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

Number 5 is the only value possible in cell (3,1).

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

Number 2 is the only value possible in cell (5,1).

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

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

Number 6 is the only value possible in cell (2,4).

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

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

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

Number 6 is the only value possible in cell (7,5).

Number 4 is the only value possible in cell (8,5).

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

Number 4 is the only value possible in cell (9,1).

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

Number 5 is the only value possible in cell (9,6).

Number 9 is the only value possible in cell (6,7).

Number 9 is the only value possible in cell (1,8).

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

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

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

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

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

Number 6 is the only value possible in cell (5,7).

Number 3 is the only value possible in cell (9,7).

Number 4 is the only value possible in cell (5,8).

Number 8 is the only value possible in cell (5,2).

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

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

Number 6 is the only value possible in cell (3,9).

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

Number 1 is the only value possible in cell (5,9).

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

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

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