Astraware Sudoku - It's a different kind of Zen

Step-By-Step Solution:

Initial Grid

                    
First step - add in all possible valid pencilmarks.




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









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









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









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









For row 6, number 3 is only possible in cell (8,6)









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









For row 9, number 7 is only possible in cell (4,9)









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









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









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









For box 4, candidates for 1 are all in column 3, so you can remove candidates from other blocks.









For blocks 3 and 9, candidates for 2 are all in the same two columns (7 and 9)









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









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









Naked Pair for 5 and 6, can remove these as candidates from other cells.









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









For column 1, Number 9 is only possible in cell (1,7)









For box 4, candidates for 6 are all in column 2, so you can remove candidates from other blocks.









Hidden Pair for 2 and 6, can remove other candidates from these cells.









Candidates for 4 in boxes 5 and 8 force the candidates in box 2 to be in the remaining line.









For column 4, Number 4 is only possible in cell (4,7)









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









For row 1, number 2 is only possible in cell (9,1)









Naked Triple for 1, 4 and 9, can remove these as candidates from other cells.









Either candidate for cell (3,3) forces 1 into cell (7,9).









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









Either candidate for cell (4,1) forces 9 into cell (2,5).









For row 4, number 9 is only possible in cell (5,4)









Either candidate for cell (7,1) forces 6 into cell (3,3).









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









Number 8 is the only value possible in cell (2,7).









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









Number 1 is the only value possible in cell (9,5).









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









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









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









Number 1 is the only value possible in cell (5,6).









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









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









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









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









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









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









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