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 3, number 2 is only possible in cell (4,3)









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









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









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









For column 4, Number 8 is only possible in cell (4,9)









For column 6, Number 8 is only possible in cell (6,2)









For column 1, Number 6 is only possible in cell (1,3)









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









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









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









For column 7, Number 6 is only possible in cell (7,5)









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









For box 2, candidates for 4 are all in row 1, so you can remove candidates from other blocks.









For box 9, candidates for 4 are all in row 7, so you can remove candidates from other blocks.









For blocks 7 and 8, candidates for 2 are all in the same two rows (7 and 9)









Candidates for 5 in boxes 1 and 4 force the candidates in box 7 to be in the remaining line.









Naked Pair for 4 and 6, can remove these as candidates from other cells.









Either candidate for cell (7,3) forces 9 into cell (8,1).









For row 6, number 9 is only possible in cell (3,6)









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









Number 7 is the only value possible in cell (2,1).









Number 8 is the only value possible in cell (2,3).









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









Number 8 is the only value possible in cell (3,5).









Either candidate for cell (6,4) forces 5 into cell (4,8).









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









Number 3 is the only value possible in cell (6,7).









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









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









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









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









Number 5 is the only value possible in cell (2,4).









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









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









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









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









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









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









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









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









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