The Doctor is about to lose to a dog in chess for at least the second time.

Well, finding this segment of the Key to Time was easy. Seeing as this is about eight minutes into the first episode, clearly Romana's about to be kidnapped.

By some kind of saber-toothed monkey. (or a knight)

The Doctor's form of bargaining is more chaotic than I expected. ("I'll give you a thousand gold pieces to mend our android." "Five hundred." "Done!" "And suppose I can't mend the android?" saying the last sentence with a huge grin on his face)

I find it kind of funny that Romana regularly runs into people who resemble her. (the princess of Tara resembles her first regeneration, while someone in part 6 of the Key to Time story resembles her second one - I think she's a princess too) It happens to the Doctor as well, but I find it funny that it happens in all of Romana's lives that we see.

The Doctor suddenly attacked a princess in the middle of a coronation (guessing she was an android, since they have something on the backs of their necks that identifies them as such)

I'm going to come back to this tomorrow, I think; Hades 2 got an update to 1.0, so I'm going to try that out.

So it turns out that I was later getting back to this than I thought haha. Going to watch parts 3 and 4 now.

They're really quick to believe the guy who was just accused of treason. (with good cause for the accusation)

Between Romana, the princess, and their android duplicates, Mary Tamm is busy this serial

That went by quickly.

I know Mary Tamm did a few Big Finish stories; I've heard two Dalek ones, so I'm tempted to look up others.