Astraware Sudoku - It's a different kind of Zen

Step-By-Step Solution:

Initial Grid

                    
First step - add in all possible valid pencilmarks.




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









For row 6, number 1 is only possible in cell (9,6)









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









For column 4, Number 2 is only possible in cell (4,2)









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









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









For column 8, Number 2 is only possible in cell (8,5)









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









For row 7, number 8 is only possible in cell (2,7)









For row 2, number 5 is only possible in cell (9,2)









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









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









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









For row 9, number 8 is only possible in cell (7,9)









For row 9, number 5 is only possible in cell (3,9)









For box 7, candidates for 4 are all in row 8, so you can remove candidates from other blocks.









For box 4, candidates for 7 are all in row 5, so you can remove candidates from other blocks.









Candidates for 9 in boxes 5 and 6 force the candidates in box 4 to be in the remaining line.









Hidden Triple for 2, 8 and 9, can remove other candidates from these cells.









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









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









For box 2, candidates for 7 are all in row 1, so you can remove candidates from other blocks.









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









Either candidate for cell (1,2) forces 3 into cell (6,6).









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









Either candidate for cell (6,2) forces 9 into cell (1,2).









Number 2 is the only value possible in cell (1,6).









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









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









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









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









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









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









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









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









Number 7 is the only value possible in cell (2,5).









Either candidate for cell (3,2) forces 3 into cell (5,3).









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









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









Number 6 is the only value possible in cell (5,7).









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









Number 4 is the only value possible in cell (3,5).









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









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









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









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









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









Number 1 is the only value possible in cell (6,2).









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









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









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









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









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









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









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









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









Number 7 is the only value possible in cell (9,8).









Number 3 is the only value possible in cell (4,8).









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









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









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