Astraware Sudoku - It's a different kind of Zen

Step-By-Step Solution:

Initial Grid

                    
First step - add in all possible valid pencilmarks.




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









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









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









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









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









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









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









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









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









For row 9, number 7 is only possible in cell (3,9)









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









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









For row 6, number 9 is only possible in cell (5,6)









For row 8, number 2 is only possible in cell (7,8)









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









For row 7, number 4 is only possible in cell (8,7)









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









For row 3, number 4 is only possible in cell (7,3)









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









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









Either candidate for cell (2,5) forces 7 into cell (2,3).









Either candidate for cell (5,4) forces 3 into cell (7,9).









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









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









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









Hidden Triple for 2, 7 and 9, can remove other candidates from these cells.









Either candidate for cell (3,2) forces 6 into cell (6,2).









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









Number 6 is the only value possible in cell (8,9).









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









Number 6 is the only value possible in cell (2,8).









Number 1 is the only value possible in cell (3,7).









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









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









Number 7 is the only value possible in cell (4,2).









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









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









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









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









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









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









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









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









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









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









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









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









Number 5 is the only value possible in cell (2,1).









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









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









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









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









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









Number 1 is the only value possible in cell (2,5).









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









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









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









Number 8 is the only value possible in cell (6,7).