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









For row 5, number 2 is only possible in cell (9,5)









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









For row 2, number 9 is only possible in cell (4,2)









For row 8, number 9 is only possible in cell (6,8)









For column 4, Number 7 is only possible in cell (4,9)









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









For box 8, Number 8 is only possible in cell (5,9)









For row 4, number 3 is only possible in cell (3,4)









For box 1, Number 4 is only possible in cell (1,2)









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









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









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









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









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









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









For box 4, candidates for 9 are all in row 5, so you can remove candidates from other blocks.









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









For box 9, candidates for 7 are all in column 8, so you can remove candidates from other blocks.









For box 7, candidates for 5 are all in column 2, so you can remove candidates from other blocks.









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









Candidates for 6 in boxes 5 and 6 force the candidates in box 4 to be in the remaining line.









Naked Pair for 4 and 5, can remove these as candidates from other cells.









For box 3, candidates for 5 are all in column 8, so you can remove candidates from other blocks.









Naked Pair for 7 and 8, can remove these as candidates from other cells.









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









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









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









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









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









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









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









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









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









Number 5 is the only value possible in cell (2,9).









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









Number 8 is the only value possible in cell (1,4).









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









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









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









Number 7 is the only value possible in cell (2,6).









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









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









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









Number 6 is the only value possible in cell (8,9).