Astraware Sudoku - It's a different kind of Zen

Step-By-Step Solution:

Initial Grid

                    
First step - add in all possible valid pencilmarks.




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









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









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









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









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









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









For row 8, number 4 is only possible in cell (8,8)









For row 1, number 4 is only possible in cell (9,1)









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









For row 9, number 4 is only possible in cell (6,9)









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









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









For row 3, number 1 is only possible in cell (4,3)









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









For box 1, Number 9 is only possible in cell (3,3)









For box 1, Number 6 is only possible in cell (2,1)









For column 2, Number 7 is only possible in cell (2,5)









For box 9, Number 1 is only possible in cell (9,7)









For column 6, Number 2 is only possible in cell (6,7)









For box 4, candidates for 8 are all in row 5, so you can remove candidates from other blocks.









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









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









For column 3, Number 2 is only possible in cell (3,6)









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









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









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









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









Number 9 is the only value possible in cell (2,7).









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









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









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









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









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









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









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









Number 6 is the only value possible in cell (8,3).









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









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









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









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









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









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









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









Number 1 is the only value possible in cell (3,8).









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









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









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









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









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









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









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









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