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 1, number 6 is only possible in cell (2,1)









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









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









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









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









For row 5, number 6 is only possible in cell (3,5)









For row 9, number 6 is only possible in cell (8,9)









For row 7, number 5 is only possible in cell (8,7)









Naked Pair for 4 and 5, can remove these as candidates from other cells.









For box 2, Number 5 is only possible in cell (6,3)









Number 8 is the only value possible in cell (2,3).









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









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









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









For box 3, candidates for 4 are all in row 1, so you can remove candidates from other blocks.









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









For row 9, number 8 is only possible in cell (1,9)









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









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









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









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









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









For row 8, number 2 is only possible in cell (6,8)









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









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









For row 9, number 4 is only possible in cell (2,9)









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









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









For row 6, number 5 is only possible in cell (1,6)









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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