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 (3,5).









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









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









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









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









For column 8, Number 6 is only possible in cell (8,1)









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









For row 2, number 2 is only possible in cell (3,2)









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









For row 4, number 5 is only possible in cell (8,4)









For row 6, number 2 is only possible in cell (9,6)









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









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









For box 4, candidates for 9 are all in column 1, 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.









For box 9, candidates for 3 are all in column 7, so you can remove candidates from other blocks.









Naked Pair for 1 and 6, can remove these as candidates from other cells.









Hidden Pair for 5 and 7, can remove other candidates from these cells.









For column 5, Number 8 is only possible in cell (5,4)









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









Hidden Pair for 5 and 7, can remove other candidates from these cells.









For row 7, number 1 is only possible in cell (3,7)









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









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









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









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









Number 9 is the only value possible in cell (3,8).









Hidden Pair for 4 and 9, can remove other candidates from these cells.









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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