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).









For row 1, number 7 is only possible in cell (8,1)









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









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









For row 1, number 6 is only possible in cell (7,1)









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









For row 3, number 4 is only possible in cell (6,3)









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









For column 3, Number 1 is only possible in cell (3,7)









For row 6, number 4 is only possible in cell (5,6)









For column 1, Number 1 is only possible in cell (1,5)









For row 5, number 4 is only possible in cell (8,5)









For row 7, number 4 is only possible in cell (1,7)









For row 9, number 4 is only possible in cell (7,9)









For column 7, Number 9 is only possible in cell (7,3)









For box 6, Number 5 is only possible in cell (9,5)









For box 6, candidates for 8 are all in row 4, so you can remove candidates from other blocks.









For box 1, candidates for 3 are all in column 2, so you can remove candidates from other blocks.









For box 4, candidates for 3 are all in row 6, so you can remove candidates from other blocks.









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









For box 8, candidates for 2 are all in row 9, so you can remove candidates from other blocks.









Number 3 is the only value possible in cell (1,9).









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









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









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









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









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









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









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









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









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









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









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









Number 5 is the only value possible in cell (3,2).









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









Number 5 is the only value possible in cell (2,9).









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









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









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









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