Astraware Sudoku - It's a different kind of Zen

Step-By-Step Solution:

Initial Grid

                    
First step - add in all possible valid pencilmarks.




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









For row 3, number 5 is only possible in cell (1,3)









For box 7, Number 3 is only possible in cell (3,9)









For column 3, Number 5 is only possible in cell (3,7)









For box 8, candidates for 2 are all in row 9, so you can remove candidates from other blocks.









For box 5, candidates for 3 are all in row 4, so you can remove candidates from other blocks.









For blocks 1 and 2, candidates for 4 are all in the same two rows (1 and 2)









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









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









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









For row 4, number 3 is only possible in cell (5,4)









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









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









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









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









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









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









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









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









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









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









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









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









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









For row 5, number 1 is only possible in cell (9,5)









For row 7, number 1 is only possible in cell (2,7)









For column 1, Number 6 is only possible in cell (1,1)









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









Number 9 is the only value possible in cell (2,1).









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









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









Number 8 is the only value possible in cell (2,5).









For column 2, Number 6 is only possible in cell (2,6)









For row 2, number 4 is only possible in cell (3,2)









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









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









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









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









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









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









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









Number 2 is the only value possible in cell (9,1).









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









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









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









Number 3 is the only value possible in cell (9,2).









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









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









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









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









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









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









Number 9 is the only value possible in cell (7,6).









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









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









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









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









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









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









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