
Checkmate on Sheldon.
The Big Bang Theory Season 4, Episode 22

to avoid CHECKMATE, and then he did it."
Money Heist Season 1, Episode 7

Checkmate.
The Big Bang Theory Season 12, Episode 17

...isn't that CHECKMATE
and I win?
The Big Bang Theory Season 5, Episode 18

- Checkmate.
- Aaarggh!
The Big Bang Theory Season 1, Episode 11