Astraware Sudoku - It's a different kind of Zen

Step-By-Step Solution:

Initial Grid

                    
First step - add in all possible valid pencilmarks.




For column 5, Number 1 is only possible in cell (5,7)









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









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









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









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









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









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









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









Number 6 is the only value possible in cell (1,9).









Number 4 is the only value possible in cell (8,9).









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









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









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









Number 6 is the only value possible in cell (9,1).









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









Number 6 is the only value possible in cell (8,5).









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









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









For box 3, candidates for 2 are all in column 7, so you can remove candidates from other blocks.









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









Hidden Pair for 1 and 8, can remove other candidates from these cells.









For box 1, candidates for 4 are all in column 2, so you can remove candidates from other blocks.









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









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









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









Number 5 is the only value possible in cell (4,8).









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









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









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









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









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









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









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









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









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









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









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









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









Number 9 is the only value possible in cell (4,1).









Number 3 is the only value possible in cell (7,1).









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









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









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









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









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









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









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









Number 9 is the only value possible in cell (1,4).









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









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









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









Number 1 is the only value possible in cell (7,5).









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









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









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









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









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









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









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