Astraware Sudoku - It's a different kind of Zen

Step-By-Step Solution:

Initial Grid

                    
First step - add in all possible valid pencilmarks.




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









For column 7, Number 8 is only possible in cell (7,9)









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









For row 5, number 6 is only possible in cell (9,5)









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









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









For row 8, number 4 is only possible in cell (1,8)









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









For box 7, candidates for 6 are all in row 9, so you can remove candidates from other blocks.









For box 4, candidates for 3 are all in row 6, so you can remove candidates from other blocks.









Naked Pair for 1 and 5, can remove these as candidates from other cells.









Naked Pair for 1 and 5, can remove these as candidates from other cells.









Hidden Pair for 6 and 8, can remove other candidates from these cells.









For box 2, candidates for 9 are all in column 5, so you can remove candidates from other blocks.









For box 1, candidates for 5 are all in column 1, so you can remove candidates from other blocks.









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









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









Naked Pair for 6 and 8, can remove these as candidates from other cells.









Naked Pair for 2 and 5, can remove these as candidates from other cells.









Naked Triple for 2, 5 and 7, can remove these as candidates from other cells.









X-Wing in rows for 2.









Either candidate for cell (6,2) forces 7 into cell (2,3).









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









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









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









Number 8 is the only value possible in cell (6,1).









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









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









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









Number 9 is the only value possible in cell (2,5).









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









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









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









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









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









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









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









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









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









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









Naked Pair for 2 and 3, can remove these as candidates from other cells.









Either candidate for cell (5,1) forces 1 into cell (8,5).









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









Number 1 is the only value possible in cell (9,8).









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









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









Number 2 is the only value possible in cell (9,7).









Number 5 is the only value possible in cell (9,2).









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









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









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









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









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









Number 3 is the only value possible in cell (7,4).









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









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









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









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









Number 5 is the only value possible in cell (4,6).









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









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









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









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









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









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