Astraware Sudoku - It's a different kind of Zen

Step-By-Step Solution:

Initial Grid

                    
First step - add in all possible valid pencilmarks.




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









Number 5 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 (8,5).









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









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









For row 3, number 1 is only possible in cell (7,3)









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









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









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









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









For box 1, candidates for 7 are all in row 3, so you can remove candidates from other blocks.









For box 5, candidates for 7 are all in row 4, so you can remove candidates from other blocks.









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









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









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









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









Number 7 is the only value possible in cell (2,3).









For blocks 1 and 2, candidates for 5 are all in the same two rows (1 and 2)









Naked Pair for 2 and 8, can remove these as candidates from other cells.









For box 4, candidates for 8 are all in column 3, so you can remove candidates from other blocks.









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









Number 1 is the only value possible in cell (3,7).









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









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









X-Wing in columns for 8.









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









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









For row 4, number 5 is only possible in cell (3,4)









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









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









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









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









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









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









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









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









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









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









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









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









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









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









Number 3 is the only value possible in cell (6,4).









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









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









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









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









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









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









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









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









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









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









Number 6 is the only value possible in cell (8,7).









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









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









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









Number 8 is the only value possible in cell (6,7).









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









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









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









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









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









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