Astraware Sudoku - It's a different kind of Zen

Step-By-Step Solution:

Initial Grid

                    
First step - add in all possible valid pencilmarks.




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









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









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









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









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









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









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









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









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









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









For row 2, number 9 is only possible in cell (4,2)









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









For row 4, number 1 is only possible in cell (5,4)









For row 8, number 1 is only possible in cell (9,8)









For column 4, Number 2 is only possible in cell (4,6)









For column 4, Number 8 is only possible in cell (4,9)









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









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









Number 6 is the only value possible in cell (1,4).









Number 8 is the only value possible in cell (1,5).









Number 7 is the only value possible in cell (1,6).









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









For column 3, Number 6 is only possible in cell (3,7)









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









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









For row 1, number 8 is only possible in cell (6,1)









For column 1, Number 5 is only possible in cell (1,2)









For column 7, Number 2 is only possible in cell (7,3)









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









For box 2, candidates for 7 are all in column 5, so you can remove candidates from other blocks.









X-Wing in columns for 3.









Number 5 is the only value possible in cell (4,3).









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









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









Number 4 is the only value possible in cell (5,9).









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









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









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









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









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









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









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









Number 3 is the only value possible in cell (5,1).









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









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









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









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









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









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









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









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









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









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









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