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









For column 1, Number 7 is only possible in cell (1,3)









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









For row 6, number 3 is only possible in cell (8,6)









For row 4, number 2 is only possible in cell (6,4)









For row 8, number 3 is only possible in cell (5,8)









For row 5, number 4 is only possible in cell (1,5)









For column 3, Number 4 is only possible in cell (3,8)









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









For box 4, Number 1 is only possible in cell (1,6)









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









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









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









Candidates for 1 in boxes 1 and 3 force the candidates in box 2 to be in the remaining line.









Hidden Pair for 1 and 7, can remove other candidates from these cells.









For column 6, Number 9 is only possible in cell (6,3)









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









For box 2, candidates for 8 are all in column 5, so you can remove candidates from other blocks.









Candidates for 5 in boxes 1 and 2 force the candidates in box 3 to be in the remaining line.









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









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









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









For row 8, number 8 is only possible in cell (6,8)









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









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









X-Wing in rows for 4.









Either candidate for cell (2,9) forces 9 into cell (2,2).









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









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









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









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









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









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









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









Number 4 is the only value possible in cell (7,2).









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









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









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









Number 1 is the only value possible in cell (9,3).









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









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









Number 2 is the only value possible in cell (4,7).









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









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









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









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









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









Number 4 is the only value possible in cell (9,7).









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









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









Number 1 is the only value possible in cell (4,2).









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









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









Number 1 is the only value possible in cell (6,5).









Number 3 is the only value possible in cell (1,9).









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









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









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









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