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 5, number 7 is only possible in cell (3,5)









For column 9, Number 1 is only possible in cell (9,5)









For row 8, number 2 is only possible in cell (3,8)









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









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









For row 2, number 4 is only possible in cell (7,2)









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









For row 4, number 9 is only possible in cell (6,4)









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









For row 8, number 9 is only possible in cell (4,8)









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









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









For box 8, candidates for 6 are all in column 5, so you can remove candidates from other blocks.









For box 3, candidates for 5 are all in row 1, so you can remove candidates from other blocks.









X-Wing in rows for 7.









Hidden Triple for 4, 6 and 7, can remove other candidates from these cells.









Hidden Pair for 3 and 5, can remove other candidates from these cells.









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









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









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









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









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









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









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









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









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









Number 5 is the only value possible in cell (8,1).









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









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









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









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









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









Number 7 is the only value possible in cell (5,9).









For row 3, number 7 is only possible in cell (6,3)









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









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









Number 2 is the only value possible in cell (6,5).









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









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









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









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









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









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









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









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









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









Number 6 is the only value possible in cell (9,3).









Number 2 is the only value possible in cell (9,1).









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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