Astraware Sudoku - It's a different kind of Zen

Step-By-Step Solution:

Initial Grid

                    
First step - add in all possible valid pencilmarks.




Number 2 is the only value possible in cell (5,3).









Number 3 is the only value possible in cell (5,1).









Number 9 is the only value possible in cell (5,7).









Number 7 is the only value possible in cell (5,9).









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









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









For row 5, number 2 is only possible in cell (6,5)









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









For row 6, number 3 is only possible in cell (2,6)









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









For row 9, number 3 is only possible in cell (4,9)









For box 1, candidates for 2 are all in column 3, so you can remove candidates from other blocks.









For box 9, candidates for 2 are all in column 7, so you can remove candidates from other blocks.









For box 5, candidates for 6 are all in column 4, so you can remove candidates from other blocks.









Naked Pair for 6 and 8, can remove these as candidates from other cells.









For box 9, candidates for 6 are all in column 7, so you can remove candidates from other blocks.









Candidates for 8 in boxes 1 and 7 force the candidates in box 4 to be in the remaining line.









Naked Pair for 6 and 8, can remove these as candidates from other cells.









Candidates for 6 in boxes 1 and 7 force the candidates in box 4 to be in the remaining line.









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









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









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









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









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









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









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









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









For row 8, number 7 is only possible in cell (3,8)









For row 8, number 9 is only possible in cell (1,8)









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









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









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









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









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









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









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









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









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









Number 4 is the only value possible in cell (6,1).









Number 5 is the only value possible in cell (3,2).









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









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









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









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









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









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









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









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









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









Number 7 is the only value possible in cell (8,5).









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









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









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









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









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









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









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









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









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









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









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









Number 2 is the only value possible in cell (7,9).