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 (3,5)









For row 2, number 8 is only possible in cell (7,2)









For row 3, number 8 is only possible in cell (1,3)









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









For row 7, number 8 is only possible in cell (5,7)









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









For column 3, Number 4 is only possible in cell (3,6)









For row 4, number 3 is only possible in cell (2,4)









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









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









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









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









For column 5, Number 6 is only possible in cell (5,4)









For box 6, candidates for 7 are all in column 8, 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.









For box 1, candidates for 6 are all in row 1, so you can remove candidates from other blocks.









Naked Pair for 5 and 9, can remove these as candidates from other cells.









For box 7, candidates for 5 are all in row 9, so you can remove candidates from other blocks.









Naked Pair for 5 and 9, can remove these as candidates from other cells.









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









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









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









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









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









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









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









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









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









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









Number 5 is the only value possible in cell (8,1).









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









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









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









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









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









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









Number 9 is the only value possible in cell (5,8).









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









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









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









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









Number 2 is the only value possible in cell (6,1).









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









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









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









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









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









Number 9 is the only value possible in cell (6,5).









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









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









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









Number 6 is the only value possible in cell (3,1).









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









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









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









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









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









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









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