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 5, number 9 is only possible in cell (3,5)









For column 1, Number 9 is only possible in cell (1,2)









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









For row 3, number 9 is only possible in cell (8,3)









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









For box 9, Number 6 is only possible in cell (9,8)









For column 8, Number 7 is only possible in cell (8,2)









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









For box 3, candidates for 5 are all in column 9, so you can remove candidates from other blocks.









Candidates for 5 in boxes 1 and 3 force the candidates in box 2 to be in the remaining line.









Naked Pair for 7 and 8, can remove these as candidates from other cells.









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









For row 7, number 6 is only possible in cell (3,7)









Number 1 is the only value possible in cell (3,6).









For row 4, number 1 is only possible in cell (5,4)









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









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









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









Number 8 is the only value possible in cell (3,1).









For row 7, number 1 is only possible in cell (6,7)









For row 8, number 7 is only possible in cell (4,8)









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









For row 9, number 8 is only possible in cell (6,9)









For column 9, Number 8 is only possible in cell (9,6)









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









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









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









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









Number 6 is the only value possible in cell (7,4).









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









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









Number 8 is the only value possible in cell (2,5).









For row 3, number 7 is only possible in cell (6,3)









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









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









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









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









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









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









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









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









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









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









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









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









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









Number 4 is the only value possible in cell (8,7).









Number 3 is the only value possible in cell (2,7).









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









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









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









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









Number 2 is the only value possible in cell (8,5).









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









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









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









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









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