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









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









For row 4, number 8 is only possible in cell (2,4)









For row 4, number 1 is only possible in cell (8,4)









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









For column 5, Number 7 is only possible in cell (5,9)









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









For column 3, Number 8 is only possible in cell (3,3)









For column 9, Number 8 is only possible in cell (9,2)









For box 3, candidates for 2 are all in column 7, so you can remove candidates from other blocks.









Candidates for 7 in boxes 4 and 7 force the candidates in box 1 to be in the remaining line.









Naked Pair for 3 and 5, can remove these as candidates from other cells.









Hidden Pair for 4 and 9, can remove other candidates from these cells.









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









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









Number 6 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 (5,1).









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









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









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









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









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









For row 3, number 7 is only possible in cell (2,3)









For row 1, number 7 is only possible in cell (8,1)









For column 8, Number 3 is only possible in cell (8,5)









For row 5, number 6 is only possible in cell (9,5)









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









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









Number 6 is the only value possible in cell (4,2).









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









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









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









Number 5 is the only value possible in cell (1,2).









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









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









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









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









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









Number 4 is the only value possible in cell (6,8).









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









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









Number 9 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 (3,5).









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









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









Number 2 is the only value possible in cell (1,8).









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









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









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









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









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









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









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









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









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









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