Astraware Sudoku - It's a different kind of Zen

Step-By-Step Solution:

Initial Grid

                    
First step - add in all possible valid pencilmarks.




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









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









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









For column 1, Number 5 is only possible in cell (1,7)









For column 7, Number 5 is only possible in cell (7,2)









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









For box 9, candidates for 4 are all in column 7, so you can remove candidates from other blocks.









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









Naked Pair for 1 and 7, can remove these as candidates from other cells.









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









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









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









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









For row 4, number 9 is only possible in cell (8,4)









For row 7, number 3 is only possible in cell (4,7)









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









Candidates for 7 in boxes 2 and 8 force the candidates in box 5 to be in the remaining line.









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









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









For box 7, candidates for 2 are all in row 8, so you can remove candidates from other blocks.









Either candidate for cell (6,7) forces 8 into cell (4,3).









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









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









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









Either candidate for cell (2,3) forces 9 into cell (4,8).









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









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









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









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









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









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









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









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









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









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









Number 1 is the only value possible in cell (2,3).









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









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









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









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









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









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









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









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









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









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









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









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









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









Number 2 is the only value possible in cell (7,4).









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









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









Number 7 is the only value possible in cell (5,6).









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









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









Number 1 is the only value possible in cell (5,7).









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









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









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









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









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