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









For row 3, number 7 is only possible in cell (2,3)









For row 7, number 7 is only possible in cell (4,7)









Number 1 is the only value possible in cell (4,5).









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









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









For row 9, number 5 is only possible in cell (6,9)









For row 3, number 5 is only possible in cell (4,3)









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









For row 6, number 3 is only possible in cell (8,6)









For box 9, Number 1 is only possible in cell (9,8)









For row 2, number 3 is only possible in cell (5,2)









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









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









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









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









For column 3, Number 6 is only possible in cell (3,7)









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









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









For row 7, number 9 is only possible in cell (1,7)









For row 6, number 9 is only possible in cell (3,6)









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









For column 2, Number 4 is only possible in cell (2,8)









For box 5, candidates for 6 are all in column 5, so you can remove candidates from other blocks.









For row 8, number 6 is only possible in cell (6,8)









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









For blocks 4 and 7, candidates for 2 are all in the same two columns (1 and 2)









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









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









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









For row 4, number 7 is only possible in cell (5,4)









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









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









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









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









Number 5 is the only value possible in cell (2,4).









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









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









Number 1 is the only value possible in cell (2,7).









Number 2 is the only value possible in cell (6,7).









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









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









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









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









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









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









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









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









Number 6 is the only value possible in cell (8,2).









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









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









Number 4 is the only value possible in cell (1,5).









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









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









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









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









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