
I also invented two new CHESS pieces.
The Big Bang Theory Season 4, Episode 22

Okay. Here's what we're gonna do.
Chess clock.
The Big Bang Theory Season 6, Episode 6

That's, that-that's
what CHESS is all about.
The Big Bang Theory Season 5, Episode 18

I finally have a handle on my idea
for three-person CHESS.
The Big Bang Theory Season 4, Episode 22

That CHESS club picture is now just
David Zimmerman and Elaine Cho.
The Big Bang Theory Season 9, Episode 24