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 (5,4).









For row 1, number 8 is only possible in cell (2,1)









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









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









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









For column 8, Number 6 is only possible in cell (8,1)









For column 6, Number 5 is only possible in cell (6,8)









For box 1, candidates for 9 are all in column 3, so you can remove candidates from other blocks.









Naked Pair for 3 and 6, can remove these as candidates from other cells.









Candidates for 3 in boxes 2 and 8 force the candidates in box 5 to be in the remaining line.









Candidates for 6 in boxes 2 and 8 force the candidates in box 5 to be in the remaining line.









Naked Pair for 3 and 9, can remove these as candidates from other cells.









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









Number 7 is the only value possible in cell (4,2).









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









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









For row 7, number 8 is only possible in cell (4,7)









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









For row 9, number 3 is only possible in cell (4,9)









For row 7, number 6 is only possible in cell (6,7)









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









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









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









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









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









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









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









Number 6 is the only value possible in cell (2,8).









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









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









For row 5, number 6 is only possible in cell (3,5)









For row 4, number 1 is only possible in cell (3,4)









For row 7, number 1 is only possible in cell (8,7)









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









For row 3, number 7 is only possible in cell (9,3)









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









Number 7 is the only value possible in cell (2,4).









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









Number 3 is the only value possible in cell (9,2).









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









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









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









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









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









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









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









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









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









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









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









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









Number 7 is the only value possible in cell (8,5).









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









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









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









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









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









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









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









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









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