I could teach her

But she died in tar

It’s Star Trek, so neither would “win” until they both realized that they’re stronger together, and they walk away as allies.

Ok so trying to work this problem out, don’t mind the shitty sketch.

But like

Yar lost to tar

Worf lost to a barrel

But a barrel can contain tar

So who beats whom?

Pretty sure there was an episode with Yar on some post apocalyptic world (can’t remember if it actually had her in it, or if it was the episode with her sister showing where they grew up) that had tons of barrels cause burning barrels and structures with barrels = post apocalyptic. As she made it out fine without barrel related injury, I’d say she could take a barrel in a fight.

So it stands to reason that since Worf might be able to take some tar. I mean he beat it by simply not fighting it aka not being present (the smart option)

Yeah, that’s my attempt at drawing a face with forehead ridges to represent Worf

Data would disagree.

yar did get killed by simply getting telekinetically thrown to the ground. klingons are more robust than humans.

Yar wins. There's a reason she was head of security before Worf.

that reason is she was better than Worf.