Astraware Sudoku - It's a different kind of Zen

Step-By-Step Solution:

Initial Grid

                    
First step - add in all possible valid pencilmarks.




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









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









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









For row 8, number 4 is only possible in cell (9,8)









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









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









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









For column 6, Number 2 is only possible in cell (6,4)









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









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









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









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









For column 9, Number 8 is only possible in cell (9,2)









For column 5, Number 9 is only possible in cell (5,8)









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









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









For column 9, Number 3 is only possible in cell (9,6)









For column 9, Number 2 is only possible in cell (9,5)









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









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









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









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









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









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









For row 7, number 2 is only possible in cell (8,7)









For row 8, number 2 is only possible in cell (2,8)









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









For row 5, number 1 is only possible in cell (2,5)









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









For row 7, number 8 is only possible in cell (6,7)









For box 5, candidates for 7 are all in column 5, so you can remove candidates from other blocks.









For box 2, candidates for 7 are all in row 2, so you can remove candidates from other blocks.









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









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









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









Number 7 is the only value possible in cell (9,1).









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









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









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









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









Number 9 is the only value possible in cell (1,2).









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









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









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









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









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









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









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









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









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









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









Number 3 is the only value possible in cell (4,2).









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









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









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









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









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









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









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









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