Astraware Sudoku - It's a different kind of Zen

Step-By-Step Solution:

Initial Grid

                    
First step - add in all possible valid pencilmarks.




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









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









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









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









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









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









For row 7, number 8 is only possible in cell (9,7)









For row 7, number 5 is only possible in cell (8,7)









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









For row 1, number 5 is only possible in cell (2,1)









For row 1, number 3 is only possible in cell (8,1)









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









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









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









For row 8, number 5 is only possible in cell (4,8)









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









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









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









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









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









For row 3, number 8 is only possible in cell (4,3)









For row 5, number 8 is only possible in cell (2,5)









For row 2, number 6 is only possible in cell (1,2)









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









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









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









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









Naked Pair for 2 and 7, can remove these as candidates from other cells.









Hidden Pair for 4 and 6, can remove other candidates from these cells.









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









Number 9 is the only value possible in cell (7,4).









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









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









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









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









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









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









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









Number 9 is the only value possible in cell (6,7).









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









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









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









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









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









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









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









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









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









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









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









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









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









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









Number 6 is the only value possible in cell (7,9).









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









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