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 6, Number 5 is only possible in cell (6,5)









For column 4, Number 5 is only possible in cell (4,2)









For box 8, Number 1 is only possible in cell (6,8)









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









Number 8 is the only value possible in cell (6,1).









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









For column 9, Number 4 is only possible in cell (9,8)









For row 4, number 2 is only possible in cell (5,4)









For column 5, Number 7 is only possible in cell (5,6)









For box 6, candidates for 9 are all in column 7, so you can remove candidates from other blocks.









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









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









For row 7, number 2 is only possible in cell (9,7)









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









For row 4, number 1 is only possible in cell (2,4)









For row 2, number 1 is only possible in cell (3,2)









For box 7, candidates for 6 are all in column 3, so you can remove candidates from other blocks.









For box 5, candidates for 8 are all in column 4, so you can remove candidates from other blocks.









Naked Pair for 3 and 6, can remove these as candidates from other cells.









Naked Pair for 3 and 6, can remove these as candidates from other cells.









Number 7 is the only value possible in cell (8,1).









For row 7, number 3 is only possible in cell (5,7)









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









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









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









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









Number 2 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 (2,2).









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









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









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









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









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









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









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









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









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









Number 8 is the only value possible in cell (1,7).









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









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









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









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









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









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









Number 9 is the only value possible in cell (1,5).









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









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









Number 1 is the only value possible in cell (4,5).









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









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









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









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









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









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









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









Number 2 is the only value possible in cell (3,9).









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









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









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









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