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

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

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

For row 5, number 9 is only possible in cell (7,5)

For row 6, number 9 is only possible in cell (2,6)

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

For column 9, Number 6 is only possible in cell (9,3)

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

For row 8, number 4 is only possible in cell (2,8)

Number 6 is the only value possible in cell (2,9).

For row 9, number 4 is only possible in cell (7,9)

For box 6, candidates for 7 are all in row 4, so you can remove candidates from other blocks.

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

For box 5, candidates for 3 are all in row 5, so you can remove candidates from other blocks.

Candidates for 2 in boxes 4 and 7 force the candidates in box 1 to be in the remaining line.

Hidden Pair for 6 and 8, can remove other candidates from these cells.

For box 1, Number 4 is only possible in cell (1,2)

For box 1, candidates for 5 are all in row 3, so you can remove candidates from other blocks.

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

Number 7 is the only value possible in cell (6,3).

Number 3 is the only value possible in cell (6,5).

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

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

For column 5, Number 8 is only possible in cell (5,4)

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

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

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

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

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

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

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

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

Number 4 is the only value possible in cell (3,6).

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

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

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

For blocks 3 and 6, candidates for 5 are all in the same two columns (7 and 8)

Number 3 is the only value possible in cell (8,9).

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

Number 3 is the only value possible in cell (1,7).

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

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

Number 9 is the only value possible in cell (4,7).

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

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

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

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

Number 1 is the only value possible in cell (7,3).

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

Number 3 is the only value possible in cell (7,1).

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

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

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

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

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

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

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

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

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

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

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