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









For column 2, Number 7 is only possible in cell (2,6)









For row 8, number 6 is only possible in cell (5,8)









For column 6, Number 6 is only possible in cell (6,5)









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









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









For column 6, Number 3 is only possible in cell (6,9)









For box 8, candidates for 7 are all in column 5, so you can remove candidates from other blocks.









For box 7, candidates for 1 are all in column 1, so you can remove candidates from other blocks.









For box 2, candidates for 4 are all in column 5, so you can remove candidates from other blocks.









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









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









For column 3, Number 2 is only possible in cell (3,8)









For blocks 6 and 9, candidates for 2 are all in the same two columns (8 and 9)









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









Hidden Pair for 2 and 4, can remove other candidates from these cells.









For box 3, candidates for 1 are all in column 7, so you can remove candidates from other blocks.









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









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









For blocks 4 and 6, candidates for 9 are all in the same two rows (4 and 6)









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









For column 1, Number 3 is only possible in cell (1,8)









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









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









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









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









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









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









For column 8, Number 4 is only possible in cell (8,4)









For row 9, number 5 is only possible in cell (8,9)









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









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









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









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









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









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









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









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









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









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









Number 5 is the only value possible in cell (4,1).









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









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









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









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









Number 3 is the only value possible in cell (9,1).









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









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









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









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









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









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









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









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









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









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









Number 9 is the only value possible in cell (3,4).









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









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









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









Number 9 is the only value possible in cell (7,6).









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









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









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









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









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