Astraware Sudoku - It's a different kind of Zen

Step-By-Step Solution:

Initial Grid

                    
First step - add in all possible valid pencilmarks.




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









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









For row 1, number 5 is only possible in cell (3,1)









For column 9, Number 2 is only possible in cell (9,1)









For row 1, number 8 is only possible in cell (2,1)









For row 7, number 6 is only possible in cell (9,7)









For column 2, Number 6 is only possible in cell (2,9)









For column 8, Number 6 is only possible in cell (8,4)









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









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









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









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









For box 8, candidates for 7 are all in column 5, so you can remove candidates from other blocks.









Candidates for 1 in boxes 5 and 8 force the candidates in box 2 to be in the remaining line.









Hidden Pair for 1 and 8, can remove other candidates from these cells.









For row 6, number 6 is only possible in cell (4,6)









For row 8, number 6 is only possible in cell (5,8)









For row 8, number 7 is only possible in cell (8,8)









Number 1 is the only value possible in cell (8,9).









Number 9 is the only value possible in cell (8,1).









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









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









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









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









Number 1 is the only value possible in cell (6,7).









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









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









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









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









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









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









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









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









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









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









Number 7 is the only value possible in cell (4,3).









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









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









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









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









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









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









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









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









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









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









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









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









Number 2 is the only value possible in cell (3,4).









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









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









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









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









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









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









Number 8 is the only value possible in cell (1,9).









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









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









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