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









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









For row 9, number 5 is only possible in cell (3,9)









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









For column 1, Number 2 is only possible in cell (1,7)









For column 3, Number 1 is only possible in cell (3,2)









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









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









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









For column 6, Number 2 is only possible in cell (6,5)









For column 4, Number 2 is only possible in cell (4,1)









For row 4, number 8 is only possible in cell (3,4)









For box 2, candidates for 9 are all in row 3, so you can remove candidates from other blocks.









For box 3, candidates for 9 are all in row 2, so you can remove candidates from other blocks.









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









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









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









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









For box 8, candidates for 7 are all in row 7, so you can remove candidates from other blocks.









For column 3, Number 7 is only possible in cell (3,8)









Hidden Pair for 1 and 7, can remove other candidates from these cells.









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









Number 3 is the only value possible in cell (5,4).









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









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









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









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









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









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









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









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









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









Number 1 is the only value possible in cell (4,7).









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









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