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









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









For column 9, Number 2 is only possible in cell (9,8)









For column 9, Number 4 is only possible in cell (9,5)









For box 6, candidates for 9 are all in column 8, so you can remove candidates from other blocks.









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









For box 9, Number 9 is only possible in cell (7,8)









For box 9, candidates for 1 are all in row 9, so you can remove candidates from other blocks.









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









For box 6, candidates for 5 are all in column 8, so you can remove candidates from other blocks.









Naked Pair for 1 and 5, can remove these as candidates from other cells.









For column 8, Number 1 is only possible in cell (8,9)









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









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









For box 3, candidates for 8 are all in row 2, so you can remove candidates from other blocks.









Candidates for 5 in boxes 1 and 3 force the candidates in box 2 to be in the remaining line.









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









Number 3 is the only value possible in cell (6,1).









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









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









Hidden Pair for 1 and 5, can remove other candidates from these cells.









Candidates for 4 in boxes 2 and 8 force the candidates in box 5 to be in the remaining line.









Either candidate for cell (1,9) forces 3 into cell (2,3).









Number 5 is the only value possible in cell (3,2).









Number 7 is the only value possible in cell (1,2).









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









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









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









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









Number 2 is the only value possible in cell (6,4).









Number 4 is the only value possible in cell (6,2).









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









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









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









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









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









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









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









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









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









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









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









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









Number 4 is the only value possible in cell (2,6).









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









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









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









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









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









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









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









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









Number 1 is the only value possible in cell (5,8).









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









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









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









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









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









Number 2 is the only value possible in cell (1,9).









Number 4 is the only value possible in cell (3,9).









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