Astraware Sudoku - It's a different kind of Zen

Step-By-Step Solution:

Initial Grid

                    
First step - add in all possible valid pencilmarks.




Number 3 is the only value possible in cell (7,8).









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









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









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









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









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









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









For row 9, number 7 is only possible in cell (4,9)









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









For row 4, number 8 is only possible in cell (9,4)









For row 4, number 3 is only possible in cell (1,4)









For row 3, number 2 is only possible in cell (9,3)









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









For row 5, number 3 is only possible in cell (9,5)









For column 9, Number 4 is only possible in cell (9,6)









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









For box 6, Number 7 is only possible in cell (7,5)









For box 8, Number 1 is only possible in cell (5,9)









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









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









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









For column 2, Number 5 is only possible in cell (2,9)









For column 7, Number 5 is only possible in cell (7,1)









For box 8, candidates for 4 are all in column 6, so you can remove candidates from other blocks.









For blocks 2 and 3, candidates for 1 are all in the same two rows (1 and 3)









X-Wing in rows for 6.









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









Number 8 is the only value possible in cell (6,1).









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









Number 1 is the only value possible in cell (7,4).









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









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









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









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









Number 5 is the only value possible in cell (3,6).









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









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









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









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









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









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









Number 4 is the only value possible in cell (6,9).