SUDOKU: Poor Flat Mates

Dutch Flat Mates: Tentropy by Flinty

Place the digits 1-9 so that they do not repeat in any row, column, or 3x3 box.
Every 5 in the grid must have a '1' directly above it or a '9' directly below it. It may have both, but it doesn't need both.
Every set of 4 adjacent digits on a peach line must contain a digit from each of the X-pair (ten-pair) subsets of {1,9}, {2,8}, {3,7}, and {4,6}. A 5 may not appear on a tentropy line. Digits on a line may repeat if allowed by other rules.
Selected column 5 digits (from row 4 to row 9) indicate the column in which the digit 5 appears in that row. Example - if R9C5 is 8, then 5 is indexed into R9C8.

Links :-
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