For column 5, Number 6 is only possible in cell (5,2)

For box 2, Number 9 is only possible in cell (4,1)

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

For row 5, number 4 is only possible in cell (9,5)

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

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

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

For column 8, Number 3 is only possible in cell (8,4)

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

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

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

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

For column 5, Number 7 is only possible in cell (5,3)

For column 6, Number 2 is only possible in cell (6,7)

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

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

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

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

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

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

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

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

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

For row 6, number 3 is only possible in cell (2,6)

For box 4, Number 5 is only possible in cell (3,5)

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

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

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

X-Wing in rows for 2.

For box 6, candidates for 2 are all in column 9, so you can remove candidates from other blocks.

Swordfish in columns for 5.

Either candidate for cell (3,2) forces 6 into cell (3,7).

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

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

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

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

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

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

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

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

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

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

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

Number 2 is the only value possible in cell (7,3).

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

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

Number 2 is the only value possible in cell (9,4).

Number 2 is the only value possible in cell (1,6).

Number 5 is the only value possible in cell (9,6).

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

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

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

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

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

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

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

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

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

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