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 5, number 6 is only possible in cell (2,5)









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









For row 7, number 6 is only possible in cell (4,7)









For row 8, number 6 is only possible in cell (7,8)









For row 7, number 8 is only possible in cell (6,7)









For row 2, number 4 is only possible in cell (5,2)









For row 5, number 4 is only possible in cell (9,5)









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









For column 7, Number 5 is only possible in cell (7,9)









For row 7, number 5 is only possible in cell (1,7)









For box 4, candidates for 8 are all in column 1, so you can remove candidates from other blocks.









For box 6, candidates for 3 are all in column 9, so you can remove candidates from other blocks.









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









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









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









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









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









For row 8, number 3 is only possible in cell (2,8)









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









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









For box 2, candidates for 8 are all in column 4, so you can remove candidates from other blocks.









Naked Pair for 7 and 9, can remove these as candidates from other cells.









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









For row 6, number 8 is only possible in cell (1,6)









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









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









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









Number 5 is the only value possible in cell (3,1).









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









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









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









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









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









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









Number 9 is the only value possible in cell (1,2).









Number 5 is the only value possible in cell (4,2).









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









Number 2 is the only value possible in cell (1,9).









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