Astraware Sudoku - It's a different kind of Zen

Step-By-Step Solution:

Initial Grid

                    
First step - add in all possible valid pencilmarks.




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









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









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









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









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









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









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









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









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









For row 9, number 6 is only possible in cell (7,9)









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









For column 6, Number 5 is only possible in cell (6,5)









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









For row 1, number 2 is only possible in cell (3,1)









For row 6, number 1 is only possible in cell (3,6)









For row 6, number 5 is only possible in cell (8,6)









For row 4, number 5 is only possible in cell (3,4)









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









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









For row 3, number 9 is only possible in cell (5,3)









For row 2, number 1 is only possible in cell (9,2)









For row 3, number 1 is only possible in cell (4,3)









For row 8, number 1 is only possible in cell (7,8)









For box 6, candidates for 7 are all in row 4, so you can remove candidates from other blocks.









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









Naked Pair for 8 and 9, can remove these as candidates from other cells.









Either candidate for cell (7,1) forces 3 into cell (2,1).









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









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









For row 8, number 3 is only possible in cell (4,8)









For box 1, candidates for 9 are all in row 2, so you can remove candidates from other blocks.









X-Wing in columns for 8.









X-Wing in columns for 8.









Swordfish in rows for 7.









Either candidate for cell (9,1) forces 2 into cell (8,9).









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









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









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









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









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









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









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









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









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









Number 8 is the only value possible in cell (1,3).









Number 7 is the only value possible in cell (6,3).









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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