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 2 is only possible in cell (6,4)









For row 1, number 2 is only possible in cell (5,1)









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









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









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









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









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









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









For row 2, number 8 is only possible in cell (1,2)









For box 5, Number 8 is only possible in cell (4,6)









For column 8, Number 8 is only possible in cell (8,5)









For row 5, number 3 is only possible in cell (2,5)









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









For row 9, number 1 is only possible in cell (4,9)









For column 7, Number 6 is only possible in cell (7,4)









For column 9, Number 6 is only possible in cell (9,2)









For box 1, candidates for 9 are all in column 3, so you can remove candidates from other blocks.









For box 3, candidates for 7 are all in column 8, so you can remove candidates from other blocks.









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









For blocks 2 and 5, candidates for 3 are all in the same two columns (4 and 6)









Naked Pair for 4 and 7, can remove these as candidates from other cells.









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









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









For blocks 1 and 4, candidates for 6 are all in the same two columns (1 and 3)









Either candidate for cell (4,4) forces 3 into cell (1,7).









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









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









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









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









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









For row 2, number 4 is only possible in cell (4,2)









Either candidate for cell (1,4) forces 3 into cell (4,4).









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









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









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









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









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









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









Number 9 is the only value possible in cell (6,2).









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









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









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









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









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









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









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









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









Number 9 is the only value possible in cell (2,6).









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









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









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









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









Number 4 is the only value possible in cell (1,8).









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









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









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









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









Number 8 is the only value possible in cell (2,9).









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









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









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









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