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

Number 3 is the only value possible in cell (8,5).

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

For row 8, number 9 is only possible in cell (3,8)

Naked Pair for 4 and 7, can remove these as candidates from other cells.

Candidates for 4 in boxes 1 and 7 force the candidates in box 4 to be in the remaining line.

Candidates for 7 in boxes 1 and 7 force the candidates in box 4 to be in the remaining line.

Number 5 is the only value possible in cell (1,4).

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

Naked Pair for 3 and 8, can remove these as candidates from other cells.

For row 1, number 3 is only possible in cell (7,1)

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

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

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

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

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

For row 3, number 4 is only possible in cell (7,3)

For box 3, Number 8 is only possible in cell (7,2)

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

For row 9, number 4 is only possible in cell (1,9)

Number 2 is the only value possible in cell (1,7).

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Number 7 is the only value possible in cell (2,6).

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

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

Number 4 is the only value possible in cell (5,6).

Number 1 is the only value possible in cell (7,6).

Number 4 is the only value possible in cell (8,7).

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

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

Number 2 is the only value possible in cell (7,8).

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

Number 3 is the only value possible in cell (2,8).

Number 8 is the only value possible in cell (2,9).

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

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

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

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

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