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 (2,1).









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









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









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









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









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









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









For row 7, number 1 is only possible in cell (6,7)









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









For row 8, number 6 is only possible in cell (7,8)









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









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









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









For box 8, candidates for 9 are all in column 5, so you can remove candidates from other blocks.









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









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









For box 8, candidates for 2 are all in column 5, so you can remove candidates from other blocks.









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









Candidates for 6 in boxes 5 and 6 force the candidates in box 4 to be in the remaining line.









Candidates for 4 in boxes 2 and 8 force the candidates in box 5 to be in the remaining line.









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









Hidden Pair for 7 and 8, can remove other candidates from these cells.









Hidden Pair for 2 and 4, can remove other candidates from these cells.









Either candidate for cell (6,6) forces 2 into cell (7,4).









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









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









Either candidate for cell (8,4) forces 4 into cell (1,5).









Number 9 is the only value possible in cell (4,5).









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









Number 2 is the only value possible in cell (1,7).









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









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









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









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









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









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









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









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









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