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 (3,7).









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









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









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









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









For column 6, Number 8 is only possible in cell (6,6)









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









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









For row 1, number 2 is only possible in cell (6,1)









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









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









For row 6, number 3 is only possible in cell (9,6)









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









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









For row 3, number 6 is only possible in cell (4,3)









For row 9, number 6 is only possible in cell (8,9)









For row 2, number 5 is only possible in cell (1,2)









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









For row 8, number 5 is only possible in cell (4,8)









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









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









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









For box 7, candidates for 1 are all in row 9, 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, 4 and 8, can remove other candidates from these cells.









For row 4, number 6 is only possible in cell (7,4)









X-Wing in columns for 7.









Either candidate for cell (2,5) forces 4 into cell (1,1).









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









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









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









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









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









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









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









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









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









Number 8 is the only value possible in cell (1,4).









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









Number 8 is the only value possible in cell (2,9).









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









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