Astraware Sudoku - It's a different kind of Zen

Step-By-Step Solution:

Initial Grid

                    
First step - add in all possible valid pencilmarks.




Number 3 is the only value possible in cell (1,7).









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









For row 9, number 3 is only possible in cell (7,9)









For column 6, Number 3 is only possible in cell (6,3)









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









For row 8, number 4 is only possible in cell (3,8)









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









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









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









For box 9, candidates for 8 are all in row 8, so you can remove candidates from other blocks.









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









For box 9, candidates for 1 are all in row 8, so you can remove candidates from other blocks.









Candidates for 9 in boxes 4 and 6 force the candidates in box 5 to be in the remaining line.









Candidates for 5 in boxes 4 and 6 force the candidates in box 5 to be in the remaining line.









Naked Pair for 1 and 7, can remove these as candidates from other cells.









Hidden Pair for 2 and 3, can remove other candidates from these cells.









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









Naked Triple for 1, 7 and 8, can remove these as candidates from other cells.









For column 5, Number 7 is only possible in cell (5,1)









For row 3, number 7 is only possible in cell (9,3)









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









Naked Pair for 5 and 9, can remove these as candidates from other cells.









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









For column 1, Number 5 is only possible in cell (1,4)









Naked Triple for 1, 7 and 8, can remove these as candidates from other cells.









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









For blocks 2 and 8, candidates for 8 are all in the same two columns (4 and 5)









Hidden Pair for 2 and 8, can remove other candidates from these cells.









Either candidate for cell (6,1) forces 4 into cell (8,2).









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









Number 1 is the only value possible in cell (4,7).









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









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









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









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









Number 9 is the only value possible in cell (5,8).









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









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









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









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









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









Number 8 is the only value possible in cell (5,9).