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

Number 9 is the only value possible in cell (2,3).

Number 2 is the only value possible in cell (1,3).

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

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

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

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

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

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

Number 8 is the only value possible in cell (9,6).

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

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

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

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

Number 1 is the only value possible in cell (2,8).

For row 9, number 1 is only possible in cell (5,9)

For row 8, number 4 is only possible in cell (1,8)

For row 7, number 6 is only possible in cell (3,7)

For row 8, number 2 is only possible in cell (3,8)

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

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

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

For row 6, number 5 is only possible in cell (4,6)

For box 9, candidates for 3 are all in row 7, so you can remove candidates from other blocks.

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

Hidden Pair for 3 and 6, can remove other candidates from these cells.

Hidden Pair for 4 and 8, can remove other candidates from these cells.

Either candidate for cell (3,6) forces 5 into cell (6,9).

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

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

Number 6 is the only value possible in cell (5,2).

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

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

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

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

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

Number 2 is the only value possible in cell (8,1).

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

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

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

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

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

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

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

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

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

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

Number 3 is the only value possible in cell (9,2).

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

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

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

Number 3 is the only value possible in cell (8,7).

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

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

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

Number 3 is the only value possible in cell (2,9).

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

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