Part 35

Not quite sure where the Chessmaster is, Steve decides to take a north at the first branch in the hallway, which leads him here.

Steve heads towards the left door.

Let's take a closer look at those pillars. Anything there.

Yep. A thorn covered flail, which Steve takes. Time to try another door.

Maybe here?

Success!

"Yes"

Not very good at setting up pieces, but no matter. Here is how you beat him.

Video

and here is his reaction to losing.

Video

Sore loser

Now where could that key be.

Picture

(linkified to avoid spoiling a video. Watch the reaction video before clicking on the link).

Got that key that was needed, now let's find out what it's needed for.