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 (5,2).









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









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









For row 1, number 5 is only possible in cell (7,1)









For row 3, number 9 is only possible in cell (2,3)









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









For row 2, number 9 is only possible in cell (7,2)









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









For row 7, number 9 is only possible in cell (5,7)









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









For row 8, number 9 is only possible in cell (3,8)









For row 3, number 7 is only possible in cell (9,3)









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









For row 1, number 4 is only possible in cell (8,1)









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









For row 2, number 4 is only possible in cell (6,2)









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









For box 1, candidates for 6 are all in column 3, so you can remove candidates from other blocks.









For box 2, candidates for 6 are all in column 4, so you can remove candidates from other blocks.









Candidates for 7 in boxes 4 and 6 force the candidates in box 5 to be in the remaining line.









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









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









Number 7 is the only value possible in cell (4,6).









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









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









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









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









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









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









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









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









Number 2 is the only value possible in cell (4,1).









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









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









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









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









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









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









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









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









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









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









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









Number 2 is the only value possible in cell (8,5).









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









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









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









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









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









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









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









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









Number 2 is the only value possible in cell (3,9).









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









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