Astraware Sudoku - It's a different kind of Zen

Step-By-Step Solution:

Initial Grid

                    
First step - add in all possible valid pencilmarks.




For column 1, Number 1 is only possible in cell (1,9)









For column 9, Number 1 is only possible in cell (9,3)









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









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









For column 2, Number 7 is only possible in cell (2,4)









For column 4, Number 7 is only possible in cell (4,6)









For row 2, number 6 is only possible in cell (3,2)









For column 1, Number 6 is only possible in cell (1,7)









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









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









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









For column 7, Number 5 is only possible in cell (7,8)









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









For row 3, number 7 is only possible in cell (5,3)









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









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









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









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









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









For row 6, number 8 is only possible in cell (7,6)









For row 2, number 4 is only possible in cell (8,2)









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









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









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









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









For box 4, candidates for 3 are all in column 3, so you can remove candidates from other blocks.









Naked Pair for 3 and 9, can remove these as candidates from other cells.









For box 8, candidates for 9 are all in column 5, so you can remove candidates from other blocks.









For box 8, candidates for 3 are all in column 5, so you can remove candidates from other blocks.









Naked Triple for 1, 3 and 9, can remove these as candidates from other cells.









X-Wing in rows for 9.









Either candidate for cell (6,3) forces 9 into cell (1,5).









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









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









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









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









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









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









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









Number 3 is the only value possible in cell (9,7).









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









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









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









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









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









Number 1 is the only value possible in cell (4,2).









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









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









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









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









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









Number 6 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 (2,8).









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









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









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









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









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









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