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 8, number 8 is only possible in cell (1,8)









For column 1, Number 5 is only possible in cell (1,2)









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









For row 5, number 1 is only possible in cell (2,5)









For row 5, number 2 is only possible in cell (8,5)









For column 1, Number 4 is only possible in cell (1,9)









For column 8, Number 4 is only possible in cell (8,1)









For column 8, Number 5 is only possible in cell (8,6)









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









Hidden Pair for 3 and 6, can remove other candidates from these cells.









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









For box 1, Number 7 is only possible in cell (1,3)









Either candidate for cell (8,4) forces 2 into cell (1,4).









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









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









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









Naked Pair for 3 and 6, can remove these as candidates from other cells.









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









For row 1, number 5 is only possible in cell (7,1)









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









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









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









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









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









Either candidate for cell (8,4) forces 9 into cell (2,6).









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









Either candidate for cell (5,1) forces 7 into cell (9,6).









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









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









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









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









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









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









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









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









Number 9 is the only value possible in cell (8,3).









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









Number 9 is the only value possible in cell (5,4).









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









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









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









Number 8 is the only value possible in cell (5,2).









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









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









Number 9 is the only value possible in cell (4,8).









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









Number 3 is the only value possible in cell (9,8).









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









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









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









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









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









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









Number 4 is the only value possible in cell (5,8).









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









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









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