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 (8,5)









For column 6, Number 8 is only possible in cell (6,3)









For row 5, number 1 is only possible in cell (4,5)









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









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









For row 1, number 9 is only possible in cell (3,1)









For column 5, Number 9 is only possible in cell (5,4)









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









For column 5, Number 2 is only possible in cell (5,6)









For row 5, number 2 is only possible in cell (7,5)









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









For row 1, number 2 is only possible in cell (6,1)









For row 6, number 3 is only possible in cell (2,6)









For row 4, number 5 is only possible in cell (2,4)









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









For row 9, number 5 is only possible in cell (4,9)









For box 4, candidates for 7 are all in row 5, so you can remove candidates from other blocks.









For box 2, candidates for 3 are all in column 4, so you can remove candidates from other blocks.









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









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









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









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









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









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









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









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









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









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









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









For column 6, Number 7 is only possible in cell (6,4)









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









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









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









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









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









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









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









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









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









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









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









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









Number 4 is the only value possible in cell (8,1).









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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