
New PUZZLE, Ma!
The Big Bang Theory Season 4, Episode 19

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

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

Did Sheldon and Amy give
you guys that PUZZLE, too?
The Big Bang Theory Season 11, Episode 12

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