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 (3,3).









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









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









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









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









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









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









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









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









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









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









For row 6, number 3 is only possible in cell (2,6)









For column 9, Number 6 is only possible in cell (9,3)









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









For box 3, candidates for 5 are all in row 1, so you can remove candidates from other blocks.









For box 1, candidates for 4 are all in column 2, so you can remove candidates from other blocks.









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









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.









Either candidate for cell (4,2) forces 2 into cell (6,4).









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









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









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









Number 6 is the only value possible in cell (4,2).









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









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









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









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









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









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









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









Number 7 is the only value possible in cell (4,6).









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









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









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









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









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









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









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









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









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









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









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









Number 4 is the only value possible in cell (8,6).









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









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









Number 6 is the only value possible in cell (2,7).









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









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









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









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









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









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









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









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









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









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









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