Puzzle #61: Black to Play; Black to Tinue

Good evening, all!

Here's an interesting game I had with AaaarghBot this week. It had a decent Tinue ending, but as I went back and reviewed it, I found some other branches from this board state that also ended in Tinue and so I thought I would make a puzzle out of it.

There are a few variations on these, so I won't state the number of moves until Tinue; I want to see what you come up with.

For the purpose of this puzzle, Tinue is defined as a board state in which no matter what the opposing player does during their turn (White, in this instance), a road win will be awarded to the other player (Black) on their next turn. If you are familiar with Chess, Tinue is very similar to Checkmate.

Please form your answer with PTN or a link to your solution via ptn.ninja. And, remember to add the r/Tak spoiler tag to your solution so as not to ruin it for others. To do this, put your answer in brackets and follow with (/spoiler). Ex:  [26. a3- Sa3](/spoiler).

If you are interested in seeing how the game got to this point, here it is.

Enjoy!