In 4-D CHESS...
No.
The Big Bang Theory Season 7, Episode 1
I have invented
a new CHESS variant
The Big Bang Theory Season 12, Episode 17
We get some girls over here
and play Laser Obstacle Strip Chess.
The Big Bang Theory Season 2, Episode 18
Wanna take a picture of us and send it
to your old friends in the Chess Club?
The Big Bang Theory Season 8, Episode 8
...and the little people I hired
to be my living CHESS set.
The Big Bang Theory Season 4, Episode 9