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 (3,4)









For row 3, number 9 is only possible in cell (1,3)









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









For row 7, number 9 is only possible in cell (4,7)









For row 3, number 8 is only possible in cell (5,3)









For row 6, number 8 is only possible in cell (2,6)









For column 5, Number 1 is only possible in cell (5,2)









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









For row 3, number 5 is only possible in cell (6,3)









For row 9, number 5 is only possible in cell (7,9)









For column 6, Number 4 is only possible in cell (6,6)









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









For row 4, number 1 is only possible in cell (6,4)









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









For row 4, number 3 is only possible in cell (9,4)









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









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









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









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









For row 3, number 1 is only possible in cell (9,3)









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









Hidden Pair for 5 and 6, can remove other candidates from these cells.









For column 3, Number 4 is only possible in cell (3,7)









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









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









Number 5 is the only value possible in cell (3,8).









For blocks 6 and 9, candidates for 4 are all in the same two columns (8 and 9)









Candidates for 2 in boxes 4 and 7 force the candidates in box 1 to be in the remaining line.









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









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









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









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









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









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









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









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









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









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









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









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









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









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









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









Number 7 is the only value possible in cell (8,3).









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









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









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









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









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









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









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









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









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









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









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









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









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