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 9 is only possible in cell (3,5)









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









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









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









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









For column 5, Number 2 is only possible in cell (5,3)









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









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









For row 7, number 4 is only possible in cell (8,7)









For row 5, number 4 is only possible in cell (7,5)









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









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









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









For box 9, Number 2 is only possible in cell (8,8)









For box 1, candidates for 7 are all in row 3, so you can remove candidates from other blocks.









For box 3, candidates for 6 are all in row 3, so you can remove candidates from other blocks.









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









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









Number 7 is the only value possible in cell (5,1).









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









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









Number 8 is the only value possible in cell (9,2).









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









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









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









Number 1 is the only value possible in cell (6,9).









For column 3, Number 6 is only possible in cell (3,2)









Naked Pair for 2 and 8, can remove these as candidates from other cells.









Hidden Pair for 2 and 3, can remove other candidates from these cells.









Swordfish in rows for 8.









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









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









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









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









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









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









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









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









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









Number 1 is the only value possible in cell (8,3).









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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