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









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









For row 8, number 4 is only possible in cell (6,8)









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









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









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









Number 4 is the only value possible in cell (5,3).









For row 8, number 5 is only possible in cell (4,8)









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









For column 6, Number 3 is only possible in cell (6,7)









For box 9, candidates for 1 are all in column 8, so you can remove candidates from other blocks.









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









Naked Pair for 3 and 7, can remove these as candidates from other cells.









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









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









For row 2, number 4 is only possible in cell (8,2)









Either candidate for cell (9,1) forces 4 into cell (9,6).









For row 5, number 4 is only possible in cell (1,5)









Either candidate for cell (7,2) forces 9 into cell (3,2).









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









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









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









For row 4, number 5 is only possible in cell (1,4)









For row 5, number 1 is only possible in cell (9,5)









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









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









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









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









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









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









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









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









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









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









Number 7 is the only value possible in cell (1,9).









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









For box 5, candidates for 6 are all in row 6, so you can remove candidates from other blocks.









Either candidate for cell (1,6) forces 6 into cell (7,5).









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









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









Number 8 is the only value possible in cell (3,5).









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









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









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









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









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









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









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









Number 3 is the only value possible in cell (1,6).









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









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









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









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









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









Number 1 is the only value possible in cell (4,9).









Number 3 is the only value possible in cell (7,9).









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