Astraware Sudoku - It's a different kind of Zen

Step-By-Step Solution:

Initial Grid

                    
First step - add in all possible valid pencilmarks.




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









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









For row 9, number 2 is only possible in cell (1,9)









For column 1, Number 9 is only possible in cell (1,8)









Number 3 is the only value possible in cell (4,8).









For row 3, number 3 is only possible in cell (1,3)









For row 2, number 3 is only possible in cell (6,2)









For row 7, number 3 is only possible in cell (9,7)









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









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









For column 5, Number 5 is only possible in cell (5,4)









For row 4, number 1 is only possible in cell (6,4)









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









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









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









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









For box 1, candidates for 4 are all in column 3, so you can remove candidates from other blocks.









Candidates for 6 in boxes 4 and 5 force the candidates in box 6 to be in the remaining line.









Naked Pair for 4 and 5, can remove these as candidates from other cells.









Hidden Pair for 2 and 6, can remove other candidates from these cells.









X-Wing in columns for 4.









Either candidate for cell (6,5) forces 6 into cell (3,6).









Number 2 is the only value possible in cell (3,5).









Naked Triple for 4, 7 and 8, can remove these as candidates from other cells.









Either candidate for cell (8,1) forces 1 into cell (2,2).









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









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









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









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









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









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









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









Number 8 is the only value possible in cell (4,3).









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









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









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









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









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









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









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









Number 6 is the only value possible in cell (8,4).









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









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









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









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









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









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









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









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









Number 7 is the only value possible in cell (4,6).









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









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









Number 5 is the only value possible in cell (2,8).









Number 1 is the only value possible in cell (3,8).









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









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









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









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