Astraware Sudoku - It's a different kind of Zen

Step-By-Step Solution:

Initial Grid

                    
First step - add in all possible valid pencilmarks.




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









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









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









For row 9, number 3 is only possible in cell (7,9)









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









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









For row 6, number 1 is only possible in cell (4,6)









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









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









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









For column 2, Number 8 is only possible in cell (2,9)









For box 7, Number 4 is only possible in cell (3,7)









For column 5, Number 4 is only possible in cell (5,9)









For column 5, Number 6 is only possible in cell (5,3)









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









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









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









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









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









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









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









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









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









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









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









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









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









For column 7, Number 9 is only possible in cell (7,3)









Number 5 is the only value possible in cell (9,3).









For row 7, number 5 is only possible in cell (1,7)









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









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









For box 8, candidates for 7 are all in column 4, so you can remove candidates from other blocks.









For row 4, number 7 is only possible in cell (6,4)









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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