Astraware Sudoku - It's a different kind of Zen

Step-By-Step Solution:

Initial Grid

                    
First step - add in all possible valid pencilmarks.




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









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









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









For row 2, number 8 is only possible in cell (6,2)









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









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









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









Number 7 is the only value possible in cell (5,4).









For row 8, number 6 is only possible in cell (5,8)









For column 2, Number 6 is only possible in cell (2,6)









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









For box 9, Number 5 is only possible in cell (8,8)









For row 7, number 2 is only possible in cell (5,7)









For box 6, candidates for 1 are all in row 5, so you can remove candidates from other blocks.









For box 9, candidates for 3 are all in column 9, so you can remove candidates from other blocks.









Candidates for 4 in boxes 1 and 3 force the candidates in box 2 to be in the remaining line.









Naked Pair for 1 and 3, can remove these as candidates from other cells.









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









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









Naked Pair for 1 and 3, can remove these as candidates from other cells.









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









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









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









Number 4 is the only value possible in cell (9,1).









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









For row 1, number 9 is only possible in cell (4,1)









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









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









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









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









For column 4, Number 3 is only possible in cell (4,6)









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









Number 7 is the only value possible in cell (8,2).









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









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









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









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









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









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









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









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









Number 4 is the only value possible in cell (1,9).









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









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









Number 1 is the only value possible in cell (4,9).









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