Which, other than its
surprisingly fun PUZZLE page,
The Big Bang Theory Season 7, Episode 17
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
Not the cube, but the PUZZLE of
why I couldn't solve the cube.
The Big Bang Theory Season 12, Episode 19