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









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









For row 4, number 1 is only possible in cell (8,4)









For row 6, number 1 is only possible in cell (4,6)









For row 9, number 1 is only possible in cell (7,9)









For row 6, number 3 is only possible in cell (1,6)









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









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









For box 1, candidates for 2 are all in column 3, so you can remove candidates from other blocks.









For box 1, candidates for 8 are all in row 2, so you can remove candidates from other blocks.









Naked Pair for 2 and 7, can remove these as candidates from other cells.









Naked Pair for 5 and 8, can remove these as candidates from other cells.









Hidden Pair for 2 and 7, can remove other candidates from these cells.









For row 9, number 3 is only possible in cell (6,9)









Naked Pair for 2 and 7, can remove these as candidates from other cells.









Hidden Pair for 2 and 7, can remove other candidates from these cells.









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









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









For box 2, candidates for 6 are all in row 1, so you can remove candidates from other blocks.









Naked Triple for 5, 6 and 8, can remove these as candidates from other cells.









Naked Triple for 3, 5 and 9, can remove these as candidates from other cells.









For column 3, Number 5 is only possible in cell (3,4)









For row 4, number 7 is only possible in cell (1,4)









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









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









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









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









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









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









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









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









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









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









Number 2 is the only value possible in cell (9,4).









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









Number 7 is the only value possible in cell (8,1).









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









Number 5 is the only value possible in cell (7,8).









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









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









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









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









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