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









For row 5, number 4 is only possible in cell (2,5)









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









For column 8, Number 4 is only possible in cell (8,2)









For row 3, number 6 is only possible in cell (1,3)









For column 8, Number 6 is only possible in cell (8,6)









For box 4, candidates for 9 are all in row 4, so you can remove candidates from other blocks.









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









For box 4, Number 2 is only possible in cell (1,6)









For box 3, candidates for 7 are all in column 9, so you can remove candidates from other blocks.









Candidates for 8 in boxes 1 and 3 force the candidates in box 2 to be in the remaining line.









Naked Pair for 7 and 9, can remove these as candidates from other cells.









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









For blocks 7 and 9, candidates for 7 are all in the same two rows (8 and 9)









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









Naked Pair for 7 and 9, can remove these as candidates from other cells.









Candidates for 7 in boxes 1 and 3 force the candidates in box 2 to be in the remaining line.









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









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









Number 5 is the only value possible in cell (4,2).









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









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









Naked Triple for 7, 8 and 9, can remove these as candidates from other cells.









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









Number 8 is the only value possible in cell (7,1).









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









Number 4 is the only value possible in cell (6,9).









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









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