
The first PUZZLE is a PUZZLE!
The Big Bang Theory Season 7, Episode 3

Your next PUZZLE is a riddle.
The Big Bang Theory Season 7, Episode 3

Apparently, he's 12-down in
the TV Guide crossword PUZZLE.
The Big Bang Theory Season 7, Episode 19

I'll just finish my crossword PUZZLE.
The Big Bang Theory Season 1, Episode 1

Not the cube, but the PUZZLE of
why I couldn't solve the cube.
The Big Bang Theory Season 12, Episode 19