- Your knight, it moved two squares then.
- He happens to have a good horse. Once he's starts, it's not so easy to stop him.

10 seconds sound clip from the Dragon connection (1980) movie soundboard.

You can hear this line at 00:47:43 in the DVD version of the movie.

Quote context

[...]

- So you went to school, huh?

- Of course. So I give the orders here.

- Huh? You give the orders? And why should you?

- Obvious. I'm the smartest.

- Hah. Well, we'll see about that.

- You refuse, then?

- You bet I do. That's for sure.

- Right. Then we'll see.

- Hey. We'll have to settle this, but later.

- Check...

- Checkmate.

- Huh?

- Your knight, it moved two squares then.

- He happens to have a good horse. Once he's starts, it's not so easy to stop him.

- Hm, well, there.

- You can't do that. There's two in between there.

- Huh? My knight's got a foreign horse. It's a very good jumper.

- Hah. You cheat. I've had enough.

- What is it? What's wrong? Does it hurt? Tell me, what's wrong.

[...]