Astraware Sudoku - It's a different kind of Zen

Step-By-Step Solution:

Initial Grid

                    
First step - add in all possible valid pencilmarks.




For row 4, number 9 is only possible in cell (2,4)









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









For column 8, Number 2 is only possible in cell (8,2)









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









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









For box 4, candidates for 2 are all in column 3, so you can remove candidates from other blocks.









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









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









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









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









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









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









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









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









For row 3, number 8 is only possible in cell (2,3)









For row 3, number 4 is only possible in cell (8,3)









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









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









For row 1, number 5 is only possible in cell (4,1)









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









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









For row 7, number 5 is only possible in cell (6,7)









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









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









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









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









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









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









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









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









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









Number 4 is the only value possible in cell (6,5).









Number 6 is the only value possible in cell (4,5).









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









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









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









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









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









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









Number 6 is the only value possible in cell (1,7).









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









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









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









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









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









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









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









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









Number 2 is the only value possible in cell (3,5).









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









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









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









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









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









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









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









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









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









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