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 (5,5).









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









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









For box 2, Number 1 is only possible in cell (5,3)









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









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









For column 1, Number 8 is only possible in cell (1,7)









For column 4, Number 7 is only possible in cell (4,8)









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









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









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









For box 3, Number 6 is only possible in cell (7,1)









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









Naked Pair for 3 and 5, can remove these as candidates from other cells.









Naked Pair for 3 and 7, can remove these as candidates from other cells.









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









For box 7, candidates for 1 are all in row 8, so you can remove candidates from other blocks.









For box 4, candidates for 3 are all in column 1, so you can remove candidates from other blocks.









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









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









Either candidate for cell (3,4) forces 1 into cell (2,1).









Number 8 is the only value possible in cell (3,1).









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









Number 6 is the only value possible in cell (2,3).









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









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









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









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









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









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









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









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









Number 3 is the only value possible in cell (7,8).









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









Number 2 is the only value possible in cell (9,8).









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









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









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









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









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









Number 4 is the only value possible in cell (9,2).









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









Number 7 is the only value possible in cell (8,9).