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









For row 7, number 8 is only possible in cell (5,7)









For row 3, number 5 is only possible in cell (1,3)









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









Number 5 is the only value possible in cell (2,7).









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









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









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









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









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









For box 1, Number 4 is only possible in cell (2,2)









For row 2, number 8 is only possible in cell (3,2)









For row 5, number 8 is only possible in cell (2,5)









For box 2, candidates for 7 are all in column 4, so you can remove candidates from other blocks.









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









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









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









For row 8, number 9 is only possible in cell (7,8)









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









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









Number 3 is the only value possible in cell (6,2).









Number 7 is the only value possible in cell (4,2).









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









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









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









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









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









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









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









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









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









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









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









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









Number 7 is the only value possible in cell (1,5).









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









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









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









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









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









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









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









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









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









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









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









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









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









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









Number 9 is the only value possible in cell (2,6).









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









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









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









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









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









Number 2 is the only value possible in cell (6,9).









Number 6 is the only value possible in cell (7,9).









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









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