Astraware Sudoku - It's a different kind of Zen

Step-By-Step Solution:

Initial Grid

                    
First step - add in all possible valid pencilmarks.




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









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









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









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









For column 2, Number 1 is only possible in cell (2,9)









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









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









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









For column 6, Number 7 is only possible in cell (6,9)









For column 6, Number 3 is only possible in cell (6,5)









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









For box 9, candidates for 2 are all in column 9, so you can remove candidates from other blocks.









For box 8, candidates for 6 are all in column 4, so you can remove candidates from other blocks.









For blocks 2 and 3, candidates for 9 are all in the same two rows (1 and 2)









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









For row 7, number 2 is only possible in cell (9,7)









For box 9, candidates for 6 are all in column 8, so you can remove candidates from other blocks.









Hidden Triple for 3, 4 and 6, can remove other candidates from these cells.









For blocks 1 and 7, candidates for 7 are all in the same two columns (2 and 1)









Either candidate for cell (2,1) forces 9 into cell (2,3).









Either candidate for cell (2,1) forces 9 into cell (8,5).









For box 6, candidates for 5 are all in column 7, so you can remove candidates from other blocks.









Either candidate for cell (3,6) forces 3 into cell (3,9).









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









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









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









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









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









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









Number 9 is the only value possible in cell (4,1).









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









Number 1 is the only value possible in cell (4,2).









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









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









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









Number 8 is the only value possible in cell (6,3).









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









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









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









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









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









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









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









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









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









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









Number 8 is the only value possible in cell (1,6).









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









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









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









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









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









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









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









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









Number 1 is the only value possible in cell (6,8).









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









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









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









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









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









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