## Step-By-Step Solution:

### Pencilmarked

First step:
Add in all possible valid pencilmarks.

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

For row 5, number 4 is only possible in cell (2,5)
(Single Position)

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

For column 8, Number 4 is only possible in cell (8,2)
(Single Position)

For row 3, number 6 is only possible in cell (1,3)
(Single Position)

For column 8, Number 6 is only possible in cell (8,6)
(Single Position)

For box 4, candidates for 9 are all in row 4, so you can remove candidates from other blocks.
(Candidate Lines)

Number 2 is the only value possible in cell (8,4).
(Single Candidate)

For box 4, Number 2 is only possible in cell (1,6)
(Single Position)

For box 3, candidates for 7 are all in column 9, so you can remove candidates from other blocks.
(Candidate Lines)

Candidates for 8 in boxes 1 and 3 force the candidates in box 2 to be in the remaining line.
(Multiple Lines)

Naked Pair for 7 and 9, can remove these as candidates from other cells.
(Naked Pairs)

Number 5 is the only value possible in cell (2,8).
(Single Candidate)

For blocks 7 and 9, candidates for 7 are all in the same two rows (8 and 9)
(Double Pairs)

Naked Pair for 7 and 8, can remove these as candidates from other cells.
(Naked Pairs)

Naked Pair for 7 and 9, can remove these as candidates from other cells.
(Naked Pairs)

Candidates for 7 in boxes 1 and 3 force the candidates in box 2 to be in the remaining line.
(Multiple Lines)

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

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

Number 5 is the only value possible in cell (4,2).
(Single Candidate)

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

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

Naked Triple for 7, 8 and 9, can remove these as candidates from other cells.
(Naked Triples)

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

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

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

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

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

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

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

Number 9 is the only value possible in cell (2,1).
(Single Candidate)

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

Number 7 is the only value possible in cell (9,2).
(Single Candidate)

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Number 2 is the only value possible in cell (7,8).
(Single Candidate)

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

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

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

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

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

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

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

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

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

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

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

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

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This solution was created by the same Sudoku Engine used in Astraware Sudoku Of The Day which also provides the hints for the game by highlighting areas for you to look at rather than simply giving away the answers – ideal if you’re trying to improve your skill level as it will allow you to develop your skill at each of the Sudoku Solving Techniques!

There’s often various ways you can solve a Sudoku puzzle, so don’t worry if you found a different route to the same final answer!