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 (2,5).









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









Number 1 is the only value possible in cell (2,7).









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









For column 8, Number 2 is only possible in cell (8,5)









Number 7 is the only value possible in cell (4,5).









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









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









For row 3, number 8 is only possible in cell (6,3)









For row 9, number 5 is only possible in cell (7,9)









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









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









For row 3, number 5 is only possible in cell (8,3)









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









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









For row 4, number 6 is only possible in cell (7,4)









For column 7, Number 8 is only possible in cell (7,6)









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









For row 2, number 6 is only possible in cell (9,2)









For box 3, candidates for 4 are all in column 7, so you can remove candidates from other blocks.









For box 8, candidates for 3 are all in row 7, so you can remove candidates from other blocks.









For box 2, candidates for 1 are all in column 4, so you can remove candidates from other blocks.









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









Hidden Pair for 3 and 4, can remove other candidates from these cells.









X-Wing in rows for 9.









Either candidate for cell (8,1) forces 4 into cell (9,7).









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









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









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









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









Number 2 is the only value possible in cell (5,4).









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









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









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









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









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









Number 1 is the only value possible in cell (9,3).









Number 2 is the only value possible in cell (1,3).









Number 2 is the only value possible in cell (3,6).









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









Number 9 is the only value possible in cell (4,7).









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









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









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









Number 7 is the only value possible in cell (1,2).









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









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









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









Number 1 is the only value possible in cell (3,2).









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









Number 8 is the only value possible in cell (3,4).









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









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









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









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









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









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









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









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