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

Number 8 is the only value possible in cell (6,2).

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

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

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

Number 7 is the only value possible in cell (4,6).

Number 2 is the only value possible in cell (4,7).

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

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

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

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

For column 8, Number 7 is only possible in cell (8,1)

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

Naked Pair for 3 and 9, can remove these as candidates from other cells.

For column 7, Number 9 is only possible in cell (7,4)

For column 9, Number 9 is only possible in cell (9,2)

For box 6, candidates for 1 are all in column 9, so you can remove candidates from other blocks.

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

For column 2, Number 3 is only possible in cell (2,9)

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

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

For box 7, candidates for 6 are all in column 3, so you can remove candidates from other blocks.

For blocks 3 and 9, candidates for 5 are all in the same two columns (8 and 7)

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

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

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

Number 4 is the only value possible in cell (3,2).

Number 4 is the only value possible in cell (7,3).

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

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

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

Number 7 is the only value possible in cell (2,3).

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

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

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

Number 9 is the only value possible in cell (3,1).

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Number 1 is the only value possible in cell (7,9).

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