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

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

For row 2, number 6 is only possible in cell (6,2)

For row 8, number 6 is only possible in cell (1,8)

For row 9, number 2 is only possible in cell (1,9)

For column 3, Number 2 is only possible in cell (3,6)

For column 6, Number 2 is only possible in cell (6,4)

For column 5, Number 2 is only possible in cell (5,2)

For box 9, candidates for 1 are all in row 8, so you can remove candidates from other blocks.

For box 1, candidates for 9 are all in row 2, so you can remove candidates from other blocks.

For box 4, candidates for 7 are all in column 2, so you can remove candidates from other blocks.

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

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

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

For row 1, number 3 is only possible in cell (4,1)

For column 1, Number 5 is only possible in cell (1,2)

For row 2, number 9 is only possible in cell (2,2)

For row 2, number 7 is only possible in cell (9,2)

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

For row 2, number 1 is only possible in cell (4,2)

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Number 9 is the only value possible in cell (5,8).

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

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

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

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

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

Number 3 is the only value possible in cell (9,4).

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

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

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

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

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

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

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

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

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

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

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

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

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

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