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 1, number 5 is only possible in cell (2,1)









For column 7, Number 4 is only possible in cell (7,7)









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









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









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









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









Number 3 is the only value possible in cell (5,7).









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









For column 2, Number 8 is only possible in cell (2,6)









For row 9, number 2 is only possible in cell (5,9)









For row 4, number 2 is only possible in cell (7,4)









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









For row 3, number 2 is only possible in cell (9,3)









For row 6, number 2 is only possible in cell (4,6)









For row 1, number 3 is only possible in cell (7,1)









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









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









For row 6, number 3 is only possible in cell (8,6)









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









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









For column 2, Number 6 is only possible in cell (2,4)









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









For column 4, Number 4 is only possible in cell (4,1)









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









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









For blocks 6 and 9, candidates for 1 are all in the same two columns (8 and 9)









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









For box 2, candidates for 9 are all in column 5, so you can remove candidates from other blocks.









Number 4 is the only value possible in cell (5,6).









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









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









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









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









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









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









Number 9 is the only value possible in cell (8,2).









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









Number 9 is the only value possible in cell (2,8).









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









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









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









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









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









Number 5 is the only value possible in cell (6,9).









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









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