Astraware Sudoku - It's a different kind of Zen

Step-By-Step Solution:

Initial Grid

                    
First step - add in all possible valid pencilmarks.




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









Number 2 is the only value possible in cell (6,4).









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









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









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









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









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









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









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









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









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









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









Number 5 is the only value possible in cell (8,6).









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









Number 5 is the only value possible in cell (2,7).









For row 9, number 7 is only possible in cell (1,9)









For row 9, number 6 is only possible in cell (5,9)









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









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









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









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









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









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









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









For row 2, number 5 is only possible in cell (3,2)









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









For row 8, number 2 is only possible in cell (1,8)









For box 9, candidates for 9 are all in row 8, so you can remove candidates from other blocks.









Either candidate for cell (6,8) forces 8 into cell (4,6).









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









Either candidate for cell (6,3) forces 9 into cell (9,8).









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









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









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









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









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









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









X-Wing in rows for 8.









Either candidate for cell (4,2) forces 4 into cell (9,3).









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









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









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









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









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









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









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









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









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









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









Number 2 is the only value possible in cell (4,7).









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









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









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









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









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