
I believe that is
flag to crotch four, CHECKMATE.
The Big Bang Theory Season 10, Episode 10

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

Checkmate would be irreversible."
Money Heist Season 1, Episode 8

Checkmate on Sheldon.
The Big Bang Theory Season 4, Episode 22
![Checkmate.[groans]
Checkmate.[groans]](https://content2.mcqstudy.com/ss/tbbt-12-7-00:14:34.395.jpeg)
Checkmate.[groans]
The Big Bang Theory Season 12, Episode 7