Astraware Sudoku - It's a different kind of Zen

Step-By-Step Solution:

Initial Grid

                    
First step - add in all possible valid pencilmarks.




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









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









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









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









For row 3, number 5 is only possible in cell (7,3)









For row 6, number 5 is only possible in cell (4,6)









For box 1, candidates for 9 are all in row 2, so you can remove candidates from other blocks.









For box 7, candidates for 9 are all in row 7, so you can remove candidates from other blocks.









Hidden Pair for 1 and 6, can remove other candidates from these cells.









For column 5, Number 2 is only possible in cell (5,4)









Candidates for 3 in boxes 4 and 5 force the candidates in box 6 to be in the remaining line.









Hidden Pair for 2 and 3, can remove other candidates from these cells.









Naked Triple for 2, 3 and 4, can remove these as candidates from other cells.









Either candidate for cell (2,9) forces 5 into cell (2,7).









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









Either candidate for cell (3,2) forces 2 into cell (7,2).









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









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









Number 2 is the only value possible in cell (9,6).









For column 9, Number 4 is only possible in cell (9,8)









For blocks 2 and 8, candidates for 4 are all in the same two columns (4 and 5)









Either candidate for cell (1,4) forces 9 into cell (7,4).









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









For box 9, Number 1 is only possible in cell (8,7)









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









For row 2, number 4 is only possible in cell (5,2)









For box 6, candidates for 8 are all in row 5, so you can remove candidates from other blocks.









For box 7, candidates for 1 are all in row 8, so you can remove candidates from other blocks.









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









For row 2, number 6 is only possible in cell (4,2)









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









Number 4 is the only value possible in cell (2,5).









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









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









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









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









For row 2, number 1 is only possible in cell (9,2)









Number 7 is the only value possible in cell (9,3).









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









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









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









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









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









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









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









Number 9 is the only value possible in cell (6,5).









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









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









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









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









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









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









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









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









Number 9 is the only value possible in cell (1,7).









Number 3 is the only value possible in cell (1,2).









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









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









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









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









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









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









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









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