Astraware Sudoku - It's a different kind of Zen

Step-By-Step Solution:

Initial Grid

                    
First step - add in all possible valid pencilmarks.




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









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









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









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









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









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









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









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









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









Number 4 is the only value possible in cell (6,2).









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









Number 8 is the only value possible in cell (5,3).









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









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









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









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









Number 9 is the only value possible in cell (7,4).









Number 2 is the only value possible in cell (6,4).









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









Number 3 is the only value possible in cell (5,7).









Number 6 is the only value possible in cell (9,7).









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









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









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









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









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









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









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









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









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









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