Astraware Sudoku - It's a different kind of Zen

Step-By-Step Solution:

Initial Grid

                    
First step - add in all possible valid pencilmarks.




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









Number 2 is the only value possible in cell (9,1).









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









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









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









For row 9, number 7 is only possible in cell (4,9)









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









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









For column 1, Number 5 is only possible in cell (1,8)









For column 8, Number 5 is only possible in cell (8,5)









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









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









Number 1 is the only value possible in cell (2,3).









Number 9 is the only value possible in cell (1,2).









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









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









For row 2, number 7 is only possible in cell (5,2)









For row 1, number 9 is only possible in cell (6,1)









For row 7, number 9 is only possible in cell (5,7)









For box 9, Number 8 is only possible in cell (8,9)









For column 2, Number 4 is only possible in cell (2,5)









For box 4, candidates for 6 are all in column 3, so you can remove candidates from other blocks.









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









For box 6, candidates for 1 are all in row 6, 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 (5,3).









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









For row 7, number 5 is only possible in cell (6,7)









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









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









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









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









Number 3 is the only value possible in cell (2,1).









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









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









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









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









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









Number 4 is the only value possible in cell (6,3).









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









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









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









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









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









Number 1 is the only value possible in cell (3,4).









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









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









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









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









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









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









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









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









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









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









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









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









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









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