Astraware Sudoku - It's a different kind of Zen

Step-By-Step Solution:

Initial Grid

                    
First step - add in all possible valid pencilmarks.




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









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









Number 5 is the only value possible in cell (7,3).









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









For row 8, number 7 is only possible in cell (3,8)









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









For row 6, number 1 is only possible in cell (2,6)









For column 7, Number 1 is only possible in cell (7,8)









For box 9, Number 6 is only possible in cell (8,8)









For column 9, Number 5 is only possible in cell (9,6)









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









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









Hidden Pair for 3 and 7, can remove other candidates from these cells.









Hidden Pair for 3 and 7, can remove other candidates from these cells.









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









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









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









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









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









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









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









For row 2, number 1 is only possible in cell (4,2)









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









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









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









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









Number 3 is the only value possible in cell (9,8).









Number 4 is the only value possible in cell (1,8).









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









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









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









For row 4, number 2 is only possible in cell (3,4)









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









For row 5, number 4 is only possible in cell (9,5)









For row 2, number 5 is only possible in cell (1,2)









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









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









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









For row 6, number 9 is only possible in cell (8,6)









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









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









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









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









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









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









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









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









Number 3 is the only value possible in cell (1,5).









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









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









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









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









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









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









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









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









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









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









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









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