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 8 is only possible in cell (5,5)









For column 5, Number 2 is only possible in cell (5,9)









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









Naked Pair for 6 and 9, can remove these as candidates from other cells.









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









For box 7, candidates for 4 are all in row 9, so you can remove candidates from other blocks.









Naked Pair for 6 and 9, can remove these as candidates from other cells.









Naked Pair for 6 and 9, can remove these as candidates from other cells.









Hidden Pair for 7 and 8, can remove other candidates from these cells.









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









For box 1, candidates for 9 are all in row 3, so you can remove candidates from other blocks.









Hidden Pair for 4 and 6, can remove other candidates from these cells.









Naked Triple for 1, 5 and 7, can remove these as candidates from other cells.









For box 1, candidates for 5 are all in row 2, so you can remove candidates from other blocks.









For box 3, candidates for 5 are all in row 1, so you can remove candidates from other blocks.









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









Either candidate for cell (4,9) forces 7 into cell (8,3).









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









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









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









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









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









Number 5 is the only value possible in cell (9,1).









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









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









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









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









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









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









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









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









Number 7 is the only value possible in cell (1,4).









Number 5 is the only value possible in cell (1,2).









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









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









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









Number 4 is the only value possible in cell (1,5).









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









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









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









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









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









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









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









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









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









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









Number 1 is the only value possible in cell (6,5).









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









Number 7 is the only value possible in cell (6,1).









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









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









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









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









Number 7 is the only value possible in cell (2,8).









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









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









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









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









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









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









Number 3 is the only value possible in cell (4,9).









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









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