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 1 is only possible in cell (7,1)









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









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









For row 8, number 1 is only possible in cell (6,8)









For box 4, Number 9 is only possible in cell (2,6)









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









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









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









Number 8 is the only value possible in cell (1,6).









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









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









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









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









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









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









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









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









For row 3, number 7 is only possible in cell (5,3)









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









For row 9, number 4 is only possible in cell (5,9)









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









For box 5, candidates for 5 are all in row 4, so you can remove candidates from other blocks.









Candidates for 9 in boxes 5 and 8 force the candidates in box 2 to be in the remaining line.









Hidden Pair for 3 and 4, can remove other candidates from these cells.









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









For box 2, candidates for 8 are all in column 6, so you can remove candidates from other blocks.









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









For row 9, number 2 is only possible in cell (7,9)









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









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









Number 9 is the only value possible in cell (8,1).









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









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









Number 8 is the only value possible in cell (6,1).









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









Number 6 is the only value possible in cell (7,2).









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









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









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









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









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









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









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









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









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









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









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









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









Number 6 is the only value possible in cell (8,5).









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









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









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









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









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









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









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









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









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









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









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