Astraware Sudoku - It's a different kind of Zen

Step-By-Step Solution:

Initial Grid

                    
First step - add in all possible valid pencilmarks.




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









For row 9, number 5 is only possible in cell (1,9)









For row 1, number 4 is only possible in cell (2,1)









For row 6, number 4 is only possible in cell (3,6)









For row 7, number 4 is only possible in cell (6,7)









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









For column 3, Number 2 is only possible in cell (3,5)









For box 4, Number 9 is only possible in cell (2,5)









For row 4, number 8 is only possible in cell (7,4)









For row 4, number 7 is only possible in cell (5,4)









For box 1, candidates for 8 are all in row 3, so you can remove candidates from other blocks.









For box 5, candidates for 6 are all in column 5, so you can remove candidates from other blocks.









For row 3, number 6 is only possible in cell (4,3)









For box 8, candidates for 7 are all in row 9, so you can remove candidates from other blocks.









Naked Pair for 7 and 9, can remove these as candidates from other cells.









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









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









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









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









Either candidate for cell (5,3) forces 7 into cell (9,3).









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









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









For column 3, Number 7 is only possible in cell (3,7)









For box 7, candidates for 8 are all in row 9, so you can remove candidates from other blocks.









Naked Pair for 6 and 9, can remove these as candidates from other cells.









Either candidate for cell (4,2) forces 3 into cell (8,7).









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









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









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









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









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









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









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









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









For row 6, number 2 is only possible in cell (7,6)









Either candidate for cell (5,3) forces 9 into cell (1,7).









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









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









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









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









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









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









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









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









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









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









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









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









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









Number 9 is the only value possible in cell (7,1).









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









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









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









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









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









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









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









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









Number 8 is the only value possible in cell (3,9).









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









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









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









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