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 (1,2).









For column 9, Number 4 is only possible in cell (9,3)









For row 5, number 1 is only possible in cell (7,5)









For row 6, number 1 is only possible in cell (6,6)









For column 1, Number 8 is only possible in cell (1,7)









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









For box 4, candidates for 5 are all in column 3, so you can remove candidates from other blocks.









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









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









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









Naked Triple for 5, 6 and 9, can remove these as candidates from other cells.









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









For row 8, number 9 is only possible in cell (7,8)









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









Number 7 is the only value possible in cell (2,6).









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









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









Number 8 is the only value possible in cell (7,9).









For row 2, number 9 is only possible in cell (5,2)









For row 7, number 6 is only possible in cell (9,7)









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









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









Number 5 is the only value possible in cell (2,7).









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









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









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









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









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









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









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









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









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









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









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









Number 7 is the only value possible in cell (3,9).









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









Number 5 is the only value possible in cell (6,9).









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