Astraware Sudoku - It's a different kind of Zen

Step-By-Step Solution:

Initial Grid

                    
First step - add in all possible valid pencilmarks.




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









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









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









For row 5, number 9 is only possible in cell (7,5)









For row 6, number 9 is only possible in cell (2,6)









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









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









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









For row 8, number 4 is only possible in cell (2,8)









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









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









For box 6, candidates for 7 are all in row 4, so you can remove candidates from other blocks.









For box 7, candidates for 2 are all in row 7, so you can remove candidates from other blocks.









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









Candidates for 2 in boxes 4 and 7 force the candidates in box 1 to be in the remaining line.









Hidden Pair for 6 and 8, can remove other candidates from these cells.









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









For box 1, candidates for 5 are all in row 3, so you can remove candidates from other blocks.









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









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









Number 3 is the only value possible in cell (6,5).









For row 1, number 7 is only possible in cell (2,1)









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









For column 5, Number 8 is only possible in cell (5,4)









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









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









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









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









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









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









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









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









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









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









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









For row 7, number 2 is only possible in cell (3,7)









For blocks 3 and 6, candidates for 5 are all in the same two columns (7 and 8)









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









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









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









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









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









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









Number 5 is the only value possible in cell (4,8).









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









Number 3 is the only value possible in cell (9,6).









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









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









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









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









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









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









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









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









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









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









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









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









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









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









Number 5 is the only value possible in cell (3,9).