Astraware Sudoku - It's a different kind of Zen

Step-By-Step Solution:

Initial Grid

                    
First step - add in all possible valid pencilmarks.




For row 6, number 8 is only possible in cell (5,6)









For column 5, Number 7 is only possible in cell (5,4)









For column 2, Number 7 is only possible in cell (2,8)









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









For box 5, candidates for 4 are all in column 4, so you can remove candidates from other blocks.









Candidates for 9 in boxes 5 and 8 force the candidates in box 2 to be in the remaining line.









Naked Pair for 2 and 9, can remove these as candidates from other cells.









Naked Pair for 2 and 9, can remove these as candidates from other cells.









Either candidate for cell (2,4) forces 5 into cell (2,3).









For column 1, Number 5 is only possible in cell (1,8)









Hidden Pair for 3 and 5, can remove other candidates from these cells.









Either candidate for cell (8,7) forces 9 into cell (8,2).









Either candidate for cell (8,7) forces 8 into cell (7,8).









Number 4 is the only value possible in cell (3,8).









For column 1, Number 4 is only possible in cell (1,3)









X-Wing in columns for 4.









Either candidate for cell (3,3) forces 8 into cell (1,1).









For row 2, number 8 is only possible in cell (9,2)









For row 9, number 8 is only possible in cell (3,9)









For row 2, number 4 is only possible in cell (7,2)









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









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









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









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









Either candidate for cell (8,7) forces 9 into cell (5,3).









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









Number 6 is the only value possible in cell (3,2).









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









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









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









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









Number 1 is the only value possible in cell (8,3).









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









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









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









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









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









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









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









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









Number 3 is the only value possible in cell (6,2).









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









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









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









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









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









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









Number 3 is the only value possible in cell (9,1).









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









Number 7 is the only value possible in cell (8,6).









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









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









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









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









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









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









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









Number 2 is the only value possible in cell (6,8).









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









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









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









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









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