Astraware Sudoku - It's a different kind of Zen

Step-By-Step Solution:

Initial Grid

                    
First step - add in all possible valid pencilmarks.




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









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









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









For row 1, number 4 is only possible in cell (2,1)









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









For row 3, number 4 is only possible in cell (6,3)









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









For column 5, Number 1 is only possible in cell (5,5)









For row 6, number 4 is only possible in cell (7,6)









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









For row 8, number 4 is only possible in cell (9,8)









For row 5, number 6 is only possible in cell (4,5)









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









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









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









For column 4, Number 5 is only possible in cell (4,6)









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









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









For box 4, Number 7 is only possible in cell (3,5)









For row 3, number 2 is only possible in cell (4,3)









For box 3, candidates for 8 are all in column 9, so you can remove candidates from other blocks.









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









For box 6, candidates for 3 are all in column 8, so you can remove candidates from other blocks.









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









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









X-Wing in columns for 2.









For column 3, Number 2 is only possible in cell (3,4)









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









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









X-Wing in rows for 5.









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









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









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









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









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









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









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









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









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









Number 7 is the only value possible in cell (1,2).









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









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









Number 9 is the only value possible in cell (2,3).









Number 7 is the only value possible in cell (8,3).









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









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









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









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









Number 9 is the only value possible in cell (6,4).









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









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









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









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









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









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









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









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









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









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









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









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









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