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









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









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









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









For column 2, Number 8 is only possible in cell (2,7)









For row 9, number 8 is only possible in cell (7,9)









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









For row 2, number 6 is only possible in cell (1,2)









For row 1, number 6 is only possible in cell (9,1)









For column 3, Number 6 is only possible in cell (3,5)









For column 1, Number 4 is only possible in cell (1,9)









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









For row 1, number 5 is only possible in cell (7,1)









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









For box 6, candidates for 4 are all in row 5, so you can remove candidates from other blocks.









For box 1, candidates for 7 are all in row 1, so you can remove candidates from other blocks.









Candidates for 1 in boxes 2 and 8 force the candidates in box 5 to be in the remaining line.









Naked Pair for 1 and 3, can remove these as candidates from other cells.









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









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









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









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









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









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









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









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









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









Number 5 is the only value possible in cell (9,8).









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









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









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









Number 3 is the only value possible in cell (7,6).









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









Number 7 is the only value possible in cell (6,3).









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









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









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









Number 4 is the only value possible in cell (6,8).









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









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









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









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