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 9, number 5 is only possible in cell (2,9)









Number 3 is the only value possible in cell (2,8).









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









For column 5, Number 4 is only possible in cell (5,2)









For row 3, number 1 is only possible in cell (7,3)









For row 1, number 2 is only possible in cell (3,1)









For row 8, number 2 is only possible in cell (7,8)









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









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









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









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









For row 9, number 7 is only possible in cell (6,9)









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









For row 6, number 7 is only possible in cell (5,6)









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









For row 7, number 3 is only possible in cell (5,7)









Naked Pair for 8 and 9, can remove these as candidates from other cells.









X-Wing in rows for 1.









Either candidate for cell (3,2) forces 9 into cell (6,2).









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









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









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









Either candidate for cell (7,6) forces 3 into cell (1,3).









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









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









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









Either candidate for cell (1,1) forces 9 into cell (1,6).









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









Either candidate for cell (1,8) forces 4 into cell (8,7).









For row 5, number 4 is only possible in cell (7,5)









For row 1, number 4 is only possible in cell (9,1)









Either candidate for cell (7,1) forces 6 into cell (1,1).









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









Number 8 is the only value possible in cell (3,2).









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









Number 1 is the only value possible in cell (4,8).









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









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









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