Astraware Sudoku - It's a different kind of Zen

Step-By-Step Solution:

Initial Grid

                    
First step - add in all possible valid pencilmarks.




For row 5, number 1 is only possible in cell (9,5)









For row 9, number 1 is only possible in cell (4,9)









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









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









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









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









For column 9, Number 7 is only possible in cell (9,6)









For box 5, candidates for 6 are all in column 4, so you can remove candidates from other blocks.









For box 7, candidates for 6 are all in row 7, so you can remove candidates from other blocks.









For box 5, candidates for 7 are all in column 6, so you can remove candidates from other blocks.









Naked Pair for 2 and 6, can remove these as candidates from other cells.









For box 4, candidates for 2 are all in row 4, so you can remove candidates from other blocks.









Hidden Pair for 2 and 4, can remove other candidates from these cells.









For box 1, candidates for 8 are all in column 3, so you can remove candidates from other blocks.









X-Wing in rows for 3.









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









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









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









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









For column 8, Number 5 is only possible in cell (8,3)









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









For row 1, number 6 is only possible in cell (2,1)









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









Number 7 is the only value possible in cell (3,4).









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









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









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









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









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









Number 9 is the only value possible in cell (2,6).









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









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









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









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









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









Number 2 is the only value possible in cell (5,3).









Number 4 is the only value possible in cell (7,6).









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









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









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









Number 8 is the only value possible in cell (9,7).









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









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









Number 6 is the only value possible in cell (7,8).









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