
Who is really terrible at CHESS.
The Big Bang Theory Season 11, Episode 15

If it's like your 3-D CHESS game,
The Big Bang Theory Season 10, Episode 10

When we played CHESS earlier, you were
terrific, and I can't wait to play you again.
The Big Bang Theory Season 1, Episode 10

...and the little people I hired
to be my living CHESS set.
The Big Bang Theory Season 4, Episode 9

It's three-person CHESS.
The Big Bang Theory Season 4, Episode 22