You, my dear king, have been reduced to a pawn.

6 seconds sound clip from Batman (1966) - A Riddle a Day Keeps the Riddler Away (S1E11) TV Series.

You can hear this line at 00:19:54 in the Blu-ray version of the movie.

Quote context

[...]

- Gee, Batman, I never thought of that. You're right.

- It's the very essence of our democracy.

- Darn it... You have the Queen of Freedom replica what possible good can it do for you to keep me here?

- My fine sovereign friend, in your wildest imagination, you could never begin to conceive my ingenious stratagem.

- If not ransom, then what?

- You, my dear king, have been reduced to a pawn.

- An important pawn however. For you will be used to checkmate Batman and his preposterous Boy Wonder when they show up.

- Then my men will escort you safely back to town... with your statue.

- You want a piece of cheese?

- Not without a good vintage port, you lackey.

- To quote an old axiom, the finer the bait, the shorter the wait.

[...]