Astraware Sudoku - It's a different kind of Zen

Step-By-Step Solution:

Initial Grid

                    
First step - add in all possible valid pencilmarks.




For box 8, Number 1 is only possible in cell (4,7)









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









For box 8, Number 4 is only possible in cell (5,9)









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









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









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









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









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









For box 1, candidates for 4 are all in row 3, so you can remove candidates from other blocks.









For box 9, candidates for 6 are all in row 7, so you can remove candidates from other blocks.









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









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









For blocks 2 and 8, candidates for 6 are all in the same two columns (4 and 6)









Naked Pair for 5 and 7, can remove these as candidates from other cells.









For column 9, Number 7 is only possible in cell (9,3)









For box 9, candidates for 5 are all in column 7, so you can remove candidates from other blocks.









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









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









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









For row 6, number 4 is only possible in cell (8,6)









Naked Pair for 1 and 2, can remove these as candidates from other cells.









Number 8 is the only value possible in cell (9,6).









For row 5, number 8 is only possible in cell (6,5)









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









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









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









Number 6 is the only value possible in cell (4,2).









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









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









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









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









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









Number 1 is the only value possible in cell (2,8).









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









Number 6 is the only value possible in cell (9,7).









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









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









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