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

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

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

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

For column 1, Number 7 is only possible in cell (1,6)

For column 1, Number 6 is only possible in cell (1,2)

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

For row 2, number 8 is only possible in cell (5,2)

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

For box 3, candidates for 2 are all in column 9, so you can remove candidates from other blocks.

For box 2, candidates for 9 are all in row 3, so you can remove candidates from other blocks.

For box 6, candidates for 9 are all in row 4, so you can remove candidates from other blocks.

For blocks 1 and 4, candidates for 9 are all in the same two columns (2 and 3)

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

Hidden Pair for 6 and 7, can remove other candidates from these cells.

For row 4, number 9 is only possible in cell (8,4)

For column 9, Number 9 is only possible in cell (9,8)

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

For row 7, number 5 is only possible in cell (8,7)

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

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

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

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

For row 6, number 9 is only possible in cell (3,6)

For row 5, number 3 is only possible in cell (2,5)

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

Hidden Pair for 4 and 5, can remove other candidates from these cells.

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

Either candidate for cell (8,5) forces 8 into cell (3,5).

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

Either candidate for cell (5,7) forces 7 into cell (9,7).

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

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

Number 8 is the only value possible in cell (6,4).

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

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

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

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

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

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

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

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

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

Number 5 is the only value possible in cell (2,3).

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

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

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

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

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

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

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

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

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

Number 4 is the only value possible in cell (1,8).

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

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

Number 1 is the only value possible in cell (8,5).

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

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

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

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

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

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

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