New PUZZLE, Ma!
The Big Bang Theory Season 4, Episode 19
Your next PUZZLE is a riddle.
The Big Bang Theory Season 7, Episode 3
The first PUZZLE is a PUZZLE!
The Big Bang Theory Season 7, Episode 3
each PUZZLE will lead you
The Big Bang Theory Season 7, Episode 3
Did Sheldon and Amy give
you guys that PUZZLE, too?
The Big Bang Theory Season 11, Episode 12